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WebClient 同步、异步调用实现对比

admin 阅读： 2024-03-31

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文章目录

一、概述
二、pom依赖
三、代码结构
四、源码传送
- 1、异步代码
- 2、同步代码
- 3、完整代码

一、概述

WebClient是Spring WebFlux模块提供的一个非阻塞的基于响应式编程的进行Http请求的客户端工具，从Spring5.0开始WebClient作为RestTemplete的替代品，有更好的响应式能力，支持异步调用，可以在Spring项目中实现网络请求。

二、pom依赖

<dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-webfluxartifactId> <version>5.2.3.RELEASEversion> dependency> <dependency> <groupId>io.projectreactor.nettygroupId> <artifactId>reactor-nettyartifactId> <version>0.9.4.RELEASEversion> dependency> <dependency> <groupId>org.apache.logging.log4jgroupId> <artifactId>log4j-slf4j-implartifactId> <version>2.12.1version> dependency> <dependency> <groupId>com.fasterxml.jackson.coregroupId> <artifactId>jackson-databindartifactId> <version>2.13.0version> dependency> <dependency> <groupId>org.apache.commonsgroupId> <artifactId>commons-lang3artifactId> <version>3.10version> dependency> <dependency> <groupId>commons-iogroupId> <artifactId>commons-ioartifactId> <version>2.5version> dependency> <dependency> <groupId>org.projectlombokgroupId> <artifactId>lombokartifactId> <version>1.18.12version> <scope>providedscope> dependency> <dependency> <groupId>junitgroupId> <artifactId>junitartifactId> <version>4.12version> dependency>

三、代码结构

在这里插入图片描述

图片请手工放入 src\test\resources\123.jpg
在这里插入图片描述
单元测试

四、源码传送

1、异步代码

import java.awt.Desktop; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.imageio.ImageIO; import org.apache.commons.lang3.RandomUtils; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.MediaType; import org.springframework.util.FileCopyUtils; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.client.ClientResponse; import org.springframework.web.reactive.function.client.WebClient; import org.springframework.web.util.UriComponentsBuilder; import com.fly.http.bean.ImageShowDialog; import com.fly.http.bean.JsonBeanUtils; import com.fly.http.bean.SearchReq; import lombok.extern.slf4j.Slf4j; import reactor.core.publisher.Mono; /** * http请求WebClient异步调用实现 */ @Slf4j public class WebClientAsyncTest { private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); private void openImage(Resource resource) { try { new ImageShowDialog(ImageIO.read(resource.getInputStream())); } catch (IOException e) { log.error(e.getMessage(), e); } } @BeforeClass public static void init() { new File("download").mkdirs(); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownFile() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/urls.txt") .accept(MediaType.IMAGE_JPEG) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(Resource.class)); // 保存到本地 mono.subscribe(resource -> { try { FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream("download/urls.txt")); } catch (IOException e) { log.error(e.getMessage(), e); } }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg001() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); mono.subscribe(resource -> openImage(resource)); TimeUnit.SECONDS.sleep(10); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg002() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); // 保存到本地 mono.subscribe(resource -> { try { File dest = new File(String.format("download/img_%s.jpg", System.currentTimeMillis())); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream(dest)); if (Desktop.isDesktopSupported()) { Desktop.getDesktop().open(dest.getParentFile()); } } catch (IOException e) { log.error(e.getMessage(), e); } }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testExchange001() throws InterruptedException { // get MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https") .host("httpbin.org") .path("/get") .queryParams(params) // 等价 queryParam("q1", "java").queryParam("q2", "python") .build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); monoGet.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testExchange002() throws InterruptedException { // get Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); monoGet.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); // formData post MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoPost = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .exchange(); monoPost.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testFormDataPost() throws InterruptedException { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet001() throws InterruptedException { Mono<String> mono = webClient.get() .uri("https://httpbin.org/{method}", "get") // {任意命名} .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet002() throws InterruptedException { Mono<ClientResponse> mono = webClient.get().uri("https://httpbin.org/get").acceptCharset(StandardCharsets.UTF_8).accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML).exchange(); mono.subscribe(reponse -> { log.info("----- headers: {}", reponse.headers()); log.info("----- statusCode: {}", reponse.statusCode()); reponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet003() throws InterruptedException { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用, https://httpbin.org/get?q=java * * @throws InterruptedException */ @Test public void testGet004() throws InterruptedException { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q", "java"); String uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParams(params).toUriString(); // 注意比较 // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q", "java", "python").toUriString(); // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q1", "java").queryParam("q2", "python").toUriString(); Mono<String> mono = webClient.get() .uri(uri) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet005() throws InterruptedException { Mono<String> mono = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testJsonBody001() throws InterruptedException { Mono<String> mono = webClient.post() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/post").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .contentType(MediaType.APPLICATION_JSON) .bodyValue(Collections.singletonMap("q", "java")) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testJsonBody002() throws IOException, InterruptedException { Mono<String> mono; int num = RandomUtils.nextInt(1, 4); switch (num) { case 1: // 方式1,javaBean SearchReq req = new SearchReq(); req.setPageNo(1); req.setPageSize(10); req.setKeyword("1"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(req) // 设置JsonBody .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; case 2: // 方式2,HashMap Map<String, String> params = new HashMap<>(); params.put("pageNo", "2"); params.put("pageSize", "20"); params.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(params) // 设置JsonBody .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; case 3: // 方式3,json字符串 Map<String, String> params2 = new HashMap<>(); params2.put("pageNo", "2"); params2.put("pageSize", "20"); params2.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromValue(JsonBeanUtils.beanToJson(params2, false))) // 设置formData .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; } TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testUpload001() throws InterruptedException { MultiValueMap<String, Object> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); params.add("file", new ClassPathResource("123.jpg")); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testUpload002() throws InterruptedException { Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData("q1", "java").with("q2", "python").with("file", new ClassPathResource("123.jpg"))) .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } }

2、同步代码

import java.awt.Desktop; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.imageio.ImageIO; import org.apache.commons.lang3.RandomUtils; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.MediaType; import org.springframework.util.FileCopyUtils; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.client.ClientResponse; import org.springframework.web.reactive.function.client.WebClient; import org.springframework.web.util.UriComponentsBuilder; import com.fly.http.bean.ImageShowDialog; import com.fly.http.bean.JsonBeanUtils; import com.fly.http.bean.SearchReq; import lombok.extern.slf4j.Slf4j; import reactor.core.publisher.Mono; /** * http请求WebClient同步调用实现 */ @Slf4j public class WebClientSyncTest { private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); private void openImage(Resource resource) { try { new ImageShowDialog(ImageIO.read(resource.getInputStream())); } catch (IOException e) { log.error(e.getMessage(), e); } } @BeforeClass public static void init() { new File("download").mkdirs(); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testDownFile() throws IOException { Mono<ClientResponse> mono = webClient.get().uri("https://00fly.online/upload/urls.txt").accept(MediaType.IMAGE_JPEG).exchange(); ClientResponse response = mono.block(); log.info("----- headers: {}", response.headers()); log.info("----- statusCode: {}", response.statusCode()); // 保存到本地 Resource resource = response.bodyToMono(Resource.class).block(); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream("download/urls.txt")); } /** * WebClient同步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg001() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); openImage(mono.block()); TimeUnit.SECONDS.sleep(10); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testDownImg002() throws IOException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); // 保存到本地 Resource resource = mono.block(); File dest = new File(String.format("download/img_%s.jpg", System.currentTimeMillis())); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream(dest)); if (Desktop.isDesktopSupported()) { Desktop.getDesktop().open(dest.getParentFile()); } } /** * WebClient同步调用 */ @Test public void testExchange001() { // get MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https") .host("httpbin.org") .path("/get") .queryParams(params) // 等价 queryParam("q1", "java").queryParam("q2", "python") .build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); ClientResponse clientResponse = monoGet.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); log.info("----- reponse: {}", clientResponse.bodyToMono(String.class).block()); } /** * WebClient同步调用 */ @Test public void testExchange002() { // get Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); ClientResponse clientResponse = monoGet.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); log.info("----- reponse: {}", clientResponse.bodyToMono(String.class).block()); // formData post MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoPost = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .exchange(); ClientResponse clientResponse2 = monoPost.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse2.headers()); log.info("----- statusCode: {}", clientResponse2.statusCode()); log.info("----- reponse: {}", clientResponse2.bodyToMono(String.class).block()); } /** * WebClient同步调用 */ @Test public void testFormDataPost() { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 */ @Test public void testGet001() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/{method}", "get") // {任意命名} .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 */ @Test public void testGet002() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testGet003() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用, https://httpbin.org/get?q=java * */ @Test public void testGet004() { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q", "java"); String uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParams(params).toUriString(); // 注意比较 // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q", "java", "python").toUriString(); // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q1", "java").queryParam("q2", "python").toUriString(); Mono<String> mono = webClient.get() .uri(uri) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testGet005() { Mono<String> mono = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testJsonBody001() { Mono<String> mono = webClient.post() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/post").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .contentType(MediaType.APPLICATION_JSON) .bodyValue(Collections.singletonMap("q", "java")) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testJsonBody002() throws IOException { Mono<String> mono; int num = RandomUtils.nextInt(1, 4); switch (num) { case 1: // 方式1,javaBean SearchReq req = new SearchReq(); req.setPageNo(1); req.setPageSize(10); req.setKeyword("1"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(req) // 设置JsonBody .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; case 2: // 方式2,HashMap Map<String, String> params = new HashMap<>(); params.put("pageNo", "2"); params.put("pageSize", "20"); params.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(params) // 设置JsonBody .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; case 3: // 方式3,json字符串 Map<String, String> params2 = new HashMap<>(); params2.put("pageNo", "2"); params2.put("pageSize", "20"); params2.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromValue(JsonBeanUtils.beanToJson(params2, false))) // 设置formData .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; } } /** * WebClient同步调用 * */ @Test public void testUpload001() { MultiValueMap<String, Object> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); params.add("file", new ClassPathResource("123.jpg")); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("----- reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testUpload002() { Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData("q1", "java").with("q2", "python").with("file", new ClassPathResource("123.jpg"))) .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("----- reponse: {}", mono.block()); } }

3、完整代码

如何使用下面的备份文件恢复成原始的项目代码，请移步查阅：神奇代码恢复工具

//goto docker\docker-compose.yml version: '3.7' services: hello: image: registry.cn-shanghai.aliyuncs.com/00fly/web-client:0.0.1 container_name: web-client deploy: resources: limits: cpus: '1' memory: 200M reservations: cpus: '0.05' memory: 100M environment: JAVA_OPTS: -server -Xms100m -Xmx100m -Djava.security.egd=file:/dev/./urandom restart: on-failure logging: driver: json-file options: max-size: 5m max-file: '1' //goto docker\restart.sh #!/bin/bash docker-compose down && docker system prune -f && docker-compose up -d && docker stats //goto docker\stop.sh #!/bin/bash docker-compose down //goto Dockerfile FROM openjdk:8-jre-alpine RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo 'Asia/Shanghai' >/etc/timezone COPY target/web-client-*.jar /app.jar ENTRYPOINT ["java","-jar","/app.jar"] //goto pom.xml <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.fly</groupId> <artifactId>web-client</artifactId> <version>0.0.1</version> <name>web-client</name> <packaging>jar</packaging> <properties> <docker.hub>registry.cn-shanghai.aliyuncs.com</docker.hub> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> <skipTests>true</skipTests> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webflux</artifactId> <version>5.2.3.RELEASE</version> </dependency> <dependency> <groupId>io.projectreactor.netty</groupId> <artifactId>reactor-netty</artifactId> <version>0.9.4.RELEASE</version> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-slf4j-impl</artifactId> <version>2.12.1</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.13.0</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.10</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.12</version> <scope>provided</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> </dependencies> <build> <finalName>${project.artifactId}-${project.version}</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.10.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>3.4.0</version> <configuration> <createDependencyReducedPom>false</createDependencyReducedPom> </configuration> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <minimizeJar>false</minimizeJar> <filters> <filter> <artifact>*:*</artifact> </filter> </filters> <transformers>  <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass>com.fly.http.RunMain</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin>  <plugin> <groupId>io.fabric8</groupId> <artifactId>docker-maven-plugin</artifactId> <version>0.40.0</version> <executions> <execution> <phase>package</phase> <goals> <goal>build</goal> <goal>push</goal> <goal>remove</goal> </goals> </execution> </executions> <configuration>    <pushRegistry>${docker.hub}</pushRegistry> <images> <image> <name> ${docker.hub}/00fly/${project.artifactId}:${project.version}</name> <build> <dockerFileDir>${project.basedir}</dockerFileDir> </build> </image> </images> </configuration> </plugin> </plugins> </build> </project> //goto src\main\java\com\fly\http\FluxWebClient.java package com.fly.http; import java.nio.charset.StandardCharsets; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.concurrent.atomic.AtomicInteger; import org.apache.commons.lang3.RandomUtils; import org.apache.commons.lang3.StringUtils; import org.springframework.http.MediaType; import org.springframework.web.reactive.function.client.WebClient; import lombok.extern.slf4j.Slf4j; /** * WebClient是RestTemplete的替代品，有更好的响应式能力，支持异步调用
* * https://blog.csdn.net/zzhongcy/article/details/105412842 * */ @Slf4j public class FluxWebClient { private List<String> urls = new ArrayList<>(); // 缓冲区默认256k，设为-1以解决报错Exceeded limit on max bytes to buffer : 262144 private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); public void visitAll() { // block转换为同步调用 if (urls.isEmpty()) { log.info("★★★★★★★★ urls isEmpty, now get urls from api ★★★★★★★★"); String resp = webClient.get().uri("https://00fly.online/upload/urls.txt").acceptCharset(StandardCharsets.UTF_8).accept(MediaType.TEXT_HTML).retrieve().bodyToMono(String.class).block(); urls = Arrays.asList(StringUtils.split(resp, "\r\n")); } // 异步访问 AtomicInteger count = new AtomicInteger(0); urls.stream() .filter(url -> RandomUtils.nextBoolean()) .forEach(url -> webClient.get() .uri(url) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class) .subscribe(r -> log.info("process complted: {}. {}", count.incrementAndGet(), url), e -> log.error(e.getMessage()))); log.info("total:{} ==> ############## 异步请求已提交 ##############", urls.size()); } } //goto src\main\java\com\fly\http\RunMain.java package com.fly.http; import java.util.Timer; import java.util.TimerTask; import java.util.concurrent.ScheduledThreadPoolExecutor; import java.util.concurrent.TimeUnit; import lombok.extern.slf4j.Slf4j; @Slf4j public class RunMain { private static FluxWebClient webClient = new FluxWebClient(); /** * 程序运行入口 * */ public static void main(String[] args) { scheduledThreadPoolExecutorStart(); } private static void scheduledThreadPoolExecutorStart() { new ScheduledThreadPoolExecutor(2).scheduleAtFixedRate(() -> { webClient.visitAll(); }, 0L, 30, TimeUnit.SECONDS); log.info("======== ScheduledThreadPoolExecutor started!"); } /** * Timer线程安全, 但单线程执行, 抛出异常时, task会终止 */ @Deprecated protected static void timeStart() { new Timer().scheduleAtFixedRate(new TimerTask() { @Override public void run() { webClient.visitAll(); } }, 0L, 30 * 1000L); log.info("======== Timer started!"); } } //goto src\main\resources\log4j2.xml <?xml version="1.0" encoding="UTF-8"?> <configuration status="off" monitorInterval="0"> <appenders> <console name="Console" target="system_out"> <patternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p %pid --- [%t] %-30.30c{1.} : %m%n" /> </console> </appenders> <loggers> <root level="INFO"> <appender-ref ref="Console" /> </root> </loggers> </configuration> //goto src\test\java\com\fly\http\ApiTest.java package com.fly.http; import java.awt.Desktop; import java.io.ByteArrayInputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.nio.charset.StandardCharsets; import java.util.Arrays; import java.util.List; import java.util.concurrent.atomic.AtomicInteger; import java.util.stream.Collectors; import org.apache.commons.io.FileUtils; import org.apache.commons.io.IOUtils; import org.apache.commons.lang3.StringUtils; import org.junit.Test; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.MediaType; import org.springframework.util.ResourceUtils; import org.springframework.web.reactive.function.client.WebClient; import lombok.extern.slf4j.Slf4j; @Slf4j public class ApiTest { // 缓冲区默认256k，设为-1以解决报错Exceeded limit on max bytes to buffer : 262144 private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); /** * 写入文本文件 * * @param urls * @see [类、类#方法、类#成员] */ private void process(List<String> urls) { try { if (ResourceUtils.isFileURL(ResourceUtils.getURL(ResourceUtils.CLASSPATH_URL_PREFIX))) { String path = ResourceUtils.getURL(ResourceUtils.CLASSPATH_URL_PREFIX).getPath() + "urls.txt"; File dest = new File(path); FileUtils.writeLines(dest, StandardCharsets.UTF_8.name(), urls); Desktop.getDesktop().open(dest); } } catch (IOException e) { log.error(e.getMessage(), e); } } @Test public void test001() throws IOException { String jsonBody = webClient.get() .uri("https://00fly.online/upload/data.json") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON) .retrieve() .bodyToMono(String.class) .block() .replace("{", "{\n") .replace("}", "}\n") .replace(",", ",\n"); try (InputStream is = new ByteArrayInputStream(jsonBody.getBytes(StandardCharsets.UTF_8))) { List<String> urls = IOUtils.readLines(is, StandardCharsets.UTF_8).stream().filter(line -> StringUtils.contains(line, "\"url\":")).map(n -> StringUtils.substringBetween(n, ":\"", "\",")).collect(Collectors.toList()); log.info("★★★★★★★★ urls: {} ★★★★★★★★", urls.size()); process(urls); } } @Test public void test002() throws IOException { Resource resource = new ClassPathResource("data.json"); String jsonBody = IOUtils.toString(resource.getInputStream(), StandardCharsets.UTF_8).replace("{", "{\n").replace("}", "}\n").replace(",", ",\n"); try (InputStream is = new ByteArrayInputStream(jsonBody.getBytes(StandardCharsets.UTF_8))) { List<String> urls = IOUtils.readLines(is, StandardCharsets.UTF_8).stream().filter(line -> StringUtils.contains(line, "\"url\":")).map(n -> StringUtils.substringBetween(n, ":\"", "\",")).collect(Collectors.toList()); log.info("★★★★★★★★ urls: {} ★★★★★★★★", urls.size()); process(urls); } } @Test public void test003() { String resp = webClient.get().uri("https://00fly.online/upload/urls.txt").acceptCharset(StandardCharsets.UTF_8).accept(MediaType.TEXT_HTML).retrieve().bodyToMono(String.class).block(); List<String> urls = Arrays.asList(StringUtils.split(resp, "\r\n")); AtomicInteger count = new AtomicInteger(0); urls.stream().forEach(url -> log.info("{}. {}", count.incrementAndGet(), url)); } } //goto src\test\java\com\fly\http\bean\ImageShowDialog.java package com.fly.http.bean; import java.awt.Dimension; import java.awt.image.BufferedImage; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import javax.swing.JDialog; import javax.swing.JLabel; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; /** * * 弹出窗口 * * @author 00fly * @version [版本号, 2023年3月3日] * @see [相关类/方法] * @since [产品/模块版本] */ public class ImageShowDialog extends JDialog { private static final long serialVersionUID = -7240357454480002551L; public static void main(String[] args) throws IOException { Resource resources = new ClassPathResource("123.jpg"); BufferedImage image = ImageIO.read(resources.getInputStream()); new ImageShowDialog(image); } public ImageShowDialog(BufferedImage image) { super(); setTitle("图片查看工具"); setSize(image.getWidth(), image.getHeight() + 30); Dimension screenSize = getToolkit().getScreenSize(); Dimension dialogSize = getSize(); dialogSize.height = Math.min(screenSize.height, dialogSize.height); dialogSize.width = Math.min(screenSize.width, dialogSize.width); setLocation((screenSize.width - dialogSize.width) / 2, (screenSize.height - dialogSize.height) / 2); add(new JLabel(new ImageIcon(image))); setVisible(true); setResizable(false); setAlwaysOnTop(true); setDefaultCloseOperation(DISPOSE_ON_CLOSE); } } //goto src\test\java\com\fly\http\bean\JsonBeanUtils.java package com.fly.http.bean; import java.io.IOException; import com.fasterxml.jackson.core.type.TypeReference; import com.fasterxml.jackson.databind.JavaType; import com.fasterxml.jackson.databind.ObjectMapper; /** * JsonBean转换工具 * * @author 00fly * */ public class JsonBeanUtils { private static ObjectMapper objectMapper = new ObjectMapper(); /** * bean转json字符串 * * @param bean * @return * @throws IOException */ public static String beanToJson(Object bean) throws IOException { String jsonText = objectMapper.writeValueAsString(bean); return objectMapper.readTree(jsonText).toPrettyString(); } /** * bean转json字符串 * * @param bean * @param pretty 是否格式美化 * @return * @throws IOException */ public static String beanToJson(Object bean, boolean pretty) throws IOException { String jsonText = objectMapper.writeValueAsString(bean); if (pretty) { return objectMapper.readTree(jsonText).toPrettyString(); } return objectMapper.readTree(jsonText).toString(); } /** * json字符串转bean * * @param jsonText * @return * @throws IOException */ public static <T> T jsonToBean(String jsonText, Class<T> clazz) throws IOException { return objectMapper.readValue(jsonText, clazz); } /** * json字符串转bean * * @param jsonText * @return * @throws IOException */ public static <T> T jsonToBean(String jsonText, JavaType javaType) throws IOException { return objectMapper.readValue(jsonText, javaType); } /** * json字符串转bean * * @param jsonText * @return * @throws IOException */ public static <T> T jsonToBean(String jsonText, TypeReference<T> typeRef) throws IOException { return objectMapper.readValue(jsonText, typeRef); } } //goto src\test\java\com\fly\http\bean\SearchReq.java package com.fly.http.bean; import lombok.Data; @Data public class SearchReq { Integer pageNo = 1; Integer pageSize = 10; String keyword; } //goto src\test\java\com\fly\http\WebClientAsyncTest.java package com.fly.http; import java.awt.Desktop; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.imageio.ImageIO; import org.apache.commons.lang3.RandomUtils; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.MediaType; import org.springframework.util.FileCopyUtils; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.client.ClientResponse; import org.springframework.web.reactive.function.client.WebClient; import org.springframework.web.util.UriComponentsBuilder; import com.fly.http.bean.ImageShowDialog; import com.fly.http.bean.JsonBeanUtils; import com.fly.http.bean.SearchReq; import lombok.extern.slf4j.Slf4j; import reactor.core.publisher.Mono; /** * http请求WebClient异步调用实现 */ @Slf4j public class WebClientAsyncTest { private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); private void openImage(Resource resource) { try { new ImageShowDialog(ImageIO.read(resource.getInputStream())); } catch (IOException e) { log.error(e.getMessage(), e); } } @BeforeClass public static void init() { new File("download").mkdirs(); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownFile() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/urls.txt") .accept(MediaType.IMAGE_JPEG) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(Resource.class)); // 保存到本地 mono.subscribe(resource -> { try { FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream("download/urls.txt")); } catch (IOException e) { log.error(e.getMessage(), e); } }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg001() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); mono.subscribe(resource -> openImage(resource)); TimeUnit.SECONDS.sleep(10); } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg002() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); // 保存到本地 mono.subscribe(resource -> { try { File dest = new File(String.format("download/img_%s.jpg", System.currentTimeMillis())); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream(dest)); if (Desktop.isDesktopSupported()) { Desktop.getDesktop().open(dest.getParentFile()); } } catch (IOException e) { log.error(e.getMessage(), e); } }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testExchange001() throws InterruptedException { // get MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https") .host("httpbin.org") .path("/get") .queryParams(params) // 等价 queryParam("q1", "java").queryParam("q2", "python") .build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); monoGet.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testExchange002() throws InterruptedException { // get Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); monoGet.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); // formData post MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoPost = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .exchange(); monoPost.subscribe(clientResponse -> { log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); clientResponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testFormDataPost() throws InterruptedException { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet001() throws InterruptedException { Mono<String> mono = webClient.get() .uri("https://httpbin.org/{method}", "get") // {任意命名} .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet002() throws InterruptedException { Mono<ClientResponse> mono = webClient.get().uri("https://httpbin.org/get").acceptCharset(StandardCharsets.UTF_8).accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML).exchange(); mono.subscribe(reponse -> { log.info("----- headers: {}", reponse.headers()); log.info("----- statusCode: {}", reponse.statusCode()); reponse.bodyToMono(String.class).subscribe(body -> log.info("----- reponse: {}", body)); }); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet003() throws InterruptedException { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用, https://httpbin.org/get?q=java * * @throws InterruptedException */ @Test public void testGet004() throws InterruptedException { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q", "java"); String uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParams(params).toUriString(); // 注意比较 // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q", "java", "python").toUriString(); // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q1", "java").queryParam("q2", "python").toUriString(); Mono<String> mono = webClient.get() .uri(uri) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testGet005() throws InterruptedException { Mono<String> mono = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testJsonBody001() throws InterruptedException { Mono<String> mono = webClient.post() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/post").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .contentType(MediaType.APPLICATION_JSON) .bodyValue(Collections.singletonMap("q", "java")) .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testJsonBody002() throws IOException, InterruptedException { Mono<String> mono; int num = RandomUtils.nextInt(1, 4); switch (num) { case 1: // 方式1,javaBean SearchReq req = new SearchReq(); req.setPageNo(1); req.setPageSize(10); req.setKeyword("1"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(req) // 设置JsonBody .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; case 2: // 方式2,HashMap Map<String, String> params = new HashMap<>(); params.put("pageNo", "2"); params.put("pageSize", "20"); params.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(params) // 设置JsonBody .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; case 3: // 方式3,json字符串 Map<String, String> params2 = new HashMap<>(); params2.put("pageNo", "2"); params2.put("pageSize", "20"); params2.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromValue(JsonBeanUtils.beanToJson(params2, false))) // 设置formData .retrieve() .bodyToMono(String.class); mono.subscribe(body -> log.info("reponse: {}", body)); break; } TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testUpload001() throws InterruptedException { MultiValueMap<String, Object> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); params.add("file", new ClassPathResource("123.jpg")); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } /** * WebClient异步调用 * * @throws InterruptedException */ @Test public void testUpload002() throws InterruptedException { Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData("q1", "java").with("q2", "python").with("file", new ClassPathResource("123.jpg"))) .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 mono.subscribe(body -> log.info("----- reponse: {}", body)); TimeUnit.SECONDS.sleep(2); // 重要，等待异步调用完成 } } //goto src\test\java\com\fly\http\WebClientSyncTest.java package com.fly.http; import java.awt.Desktop; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.nio.charset.StandardCharsets; import java.util.Collections; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import javax.imageio.ImageIO; import org.apache.commons.lang3.RandomUtils; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.MediaType; import org.springframework.util.FileCopyUtils; import org.springframework.util.LinkedMultiValueMap; import org.springframework.util.MultiValueMap; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.client.ClientResponse; import org.springframework.web.reactive.function.client.WebClient; import org.springframework.web.util.UriComponentsBuilder; import com.fly.http.bean.ImageShowDialog; import com.fly.http.bean.JsonBeanUtils; import com.fly.http.bean.SearchReq; import lombok.extern.slf4j.Slf4j; import reactor.core.publisher.Mono; /** * http请求WebClient同步调用实现 */ @Slf4j public class WebClientSyncTest { private WebClient webClient = WebClient.builder().codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(-1)).build(); private void openImage(Resource resource) { try { new ImageShowDialog(ImageIO.read(resource.getInputStream())); } catch (IOException e) { log.error(e.getMessage(), e); } } @BeforeClass public static void init() { new File("download").mkdirs(); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testDownFile() throws IOException { Mono<ClientResponse> mono = webClient.get().uri("https://00fly.online/upload/urls.txt").accept(MediaType.IMAGE_JPEG).exchange(); ClientResponse response = mono.block(); log.info("----- headers: {}", response.headers()); log.info("----- statusCode: {}", response.statusCode()); // 保存到本地 Resource resource = response.bodyToMono(Resource.class).block(); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream("download/urls.txt")); } /** * WebClient同步调用 * * @throws IOException * @throws InterruptedException */ @Test public void testDownImg001() throws IOException, InterruptedException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); openImage(mono.block()); TimeUnit.SECONDS.sleep(10); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testDownImg002() throws IOException { Mono<Resource> mono = webClient.get() .uri("https://00fly.online/upload/2019/02/201902262129360274AKuFZcUfip.jpg") .accept(MediaType.IMAGE_JPEG) .retrieve() // 获取响应体 .bodyToMono(Resource.class); // 保存到本地 Resource resource = mono.block(); File dest = new File(String.format("download/img_%s.jpg", System.currentTimeMillis())); FileCopyUtils.copy(resource.getInputStream(), new FileOutputStream(dest)); if (Desktop.isDesktopSupported()) { Desktop.getDesktop().open(dest.getParentFile()); } } /** * WebClient同步调用 */ @Test public void testExchange001() { // get MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https") .host("httpbin.org") .path("/get") .queryParams(params) // 等价 queryParam("q1", "java").queryParam("q2", "python") .build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); ClientResponse clientResponse = monoGet.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); log.info("----- reponse: {}", clientResponse.bodyToMono(String.class).block()); } /** * WebClient同步调用 */ @Test public void testExchange002() { // get Mono<ClientResponse> monoGet = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange(); ClientResponse clientResponse = monoGet.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse.headers()); log.info("----- statusCode: {}", clientResponse.statusCode()); log.info("----- reponse: {}", clientResponse.bodyToMono(String.class).block()); // formData post MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<ClientResponse> monoPost = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .exchange(); ClientResponse clientResponse2 = monoPost.block(); // 获取完整的响应对象 log.info("----- headers: {}", clientResponse2.headers()); log.info("----- statusCode: {}", clientResponse2.statusCode()); log.info("----- reponse: {}", clientResponse2.bodyToMono(String.class).block()); } /** * WebClient同步调用 */ @Test public void testFormDataPost() { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromFormData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 */ @Test public void testGet001() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/{method}", "get") // {任意命名} .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 */ @Test public void testGet002() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testGet003() { Mono<String> mono = webClient.get() .uri("https://httpbin.org/get") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用, https://httpbin.org/get?q=java * */ @Test public void testGet004() { MultiValueMap<String, String> params = new LinkedMultiValueMap<>(); params.add("q", "java"); String uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParams(params).toUriString(); // 注意比较 // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q", "java", "python").toUriString(); // uri = UriComponentsBuilder.fromUriString("https://httpbin.org/get").queryParam("q1", "java").queryParam("q2", "python").toUriString(); Mono<String> mono = webClient.get() .uri(uri) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .exchange() .doOnSuccess(clientResponse -> log.info("----- headers: {}", clientResponse.headers())) .doOnSuccess(clientResponse -> log.info("----- statusCode: {}", clientResponse.statusCode())) .flatMap(clientResponse -> clientResponse.bodyToMono(String.class)); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testGet005() { Mono<String> mono = webClient.get() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/get").queryParam("q1", "java").queryParam("q2", "python").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testJsonBody001() { Mono<String> mono = webClient.post() .uri(uriBuilder -> uriBuilder.scheme("https").host("httpbin.org").path("/post").build()) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .contentType(MediaType.APPLICATION_JSON) .bodyValue(Collections.singletonMap("q", "java")) .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); } /** * WebClient同步调用 * * @throws IOException */ @Test public void testJsonBody002() throws IOException { Mono<String> mono; int num = RandomUtils.nextInt(1, 4); switch (num) { case 1: // 方式1,javaBean SearchReq req = new SearchReq(); req.setPageNo(1); req.setPageSize(10); req.setKeyword("1"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(req) // 设置JsonBody .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; case 2: // 方式2,HashMap Map<String, String> params = new HashMap<>(); params.put("pageNo", "2"); params.put("pageSize", "20"); params.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .bodyValue(params) // 设置JsonBody .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; case 3: // 方式3,json字符串 Map<String, String> params2 = new HashMap<>(); params2.put("pageNo", "2"); params2.put("pageSize", "20"); params2.put("keyword", "2"); mono = webClient.post() .uri("https://httpbin.org/post") .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromValue(JsonBeanUtils.beanToJson(params2, false))) // 设置formData .retrieve() .bodyToMono(String.class); log.info("reponse: {}", mono.block()); break; } } /** * WebClient同步调用 * */ @Test public void testUpload001() { MultiValueMap<String, Object> params = new LinkedMultiValueMap<>(); params.add("q1", "java"); params.add("q2", "python"); params.add("file", new ClassPathResource("123.jpg")); Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData(params)) // 设置formData,等价 BodyInserters.fromFormData("q1", "java").with("q2", "python") .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("----- reponse: {}", mono.block()); } /** * WebClient同步调用 * */ @Test public void testUpload002() { Mono<String> mono = webClient.post() .uri("https://httpbin.org/post") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .acceptCharset(StandardCharsets.UTF_8) .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_HTML) .body(BodyInserters.fromMultipartData("q1", "java").with("q2", "python").with("file", new ClassPathResource("123.jpg"))) .retrieve() // 获取响应体 .bodyToMono(String.class); // 响应数据类型转换 log.info("----- reponse: {}", mono.block()); } }

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