spring boot使用WebClient调用HTTP服务代码示例
这篇文章主要介绍了springboot使用WebClient调用HTTP服务代码示例,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
WebClient的请求模式属于异步非阻塞,能够以少量固定的线程处理高并发的HTTP请求
WebClient是SpringWebFlux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开始提供
在SpringBoot应用中
1.添加SpringWebFlux依赖
org.springframework.boot spring-boot-starter-webflux
2.使用
(1)Restful接口demoController.java
packagecom.example.demo.controller; importcom.example.demo.domain.MyData; importorg.springframework.http.HttpHeaders; importorg.springframework.http.MediaType; importorg.springframework.web.bind.annotation.*; importjavax.servlet.http.Cookie; importjavax.servlet.http.HttpServletRequest; @RestController @RequestMapping("/api") publicclassdemoController{ @GetMapping(value="/getHeader",produces={MediaType.APPLICATION_JSON_UTF8_VALUE}) publicMyDatagetHeader(HttpServletRequestrequest){ intid=0; if(request.getParameter("id")!=null){ id=Integer.valueOf(request.getParameter("id")); } Stringname=request.getParameter("name"); //header StringuserAgent="USER_AGENT——"+request.getHeader(HttpHeaders.USER_AGENT); userAgent+="|ACCEPT_CHARSET——"+request.getHeader(HttpHeaders.ACCEPT_CHARSET); userAgent+="|ACCEPT_ENCODING——"+request.getHeader(HttpHeaders.ACCEPT_ENCODING); userAgent+="|ContextPath——"+request.getContextPath(); userAgent+="|AuthType——"+request.getAuthType(); userAgent+="|PathInfo——"+request.getPathInfo(); userAgent+="|Method——"+request.getMethod(); userAgent+="|QueryString——"+request.getQueryString(); Cookie[]cookies=request.getCookies(); if(cookies!=null){ for(Cookiecookie:cookies){ System.out.println(cookie.getName()+":"+cookie.getValue()); } } MyDatadata=newMyData(); data.setId(id); data.setName(name); data.setOther(userAgent); returndata; } @PostMapping(value="/getPost",produces={MediaType.APPLICATION_JSON_UTF8_VALUE}) publicMyDatagetPost(HttpServletRequestrequest){ intid=0; if(request.getParameter("id")!=null){ id=Integer.valueOf(request.getParameter("id")); } Stringname=request.getParameter("name"); System.out.println(name+","+id); MyDatadata=newMyData(); data.setId(id); data.setName(name); returndata; } /** *POST传JSON请求 */ @PostMapping(value="/getPostJson",produces={MediaType.APPLICATION_JSON_UTF8_VALUE}) publicMyDatagetPostJson(@RequestBody(required=true)MyDatadata){ System.out.println(data.getId()); System.out.println(data.getName()); returndata; } }
MyData.java
packagecom.example.demo.domain; publicclassMyData{ privateintid; privateStringname; privateStringother; publicintgetId(){ returnid; } publicvoidsetId(intid){ this.id=id; } publicStringgetName(){ returnname; } publicvoidsetName(Stringname){ this.name=name; } publicStringgetOther(){ returnother; } publicvoidsetOther(Stringother){ this.other=other; } }
(2)WebClient使用
DemoApplicationTests.java
packagecom.example.demo; importcom.example.demo.domain.MyData; importorg.junit.Test; importorg.springframework.http.HttpHeaders; importorg.springframework.http.HttpMethod; importorg.springframework.http.MediaType; importorg.springframework.util.LinkedMultiValueMap; importorg.springframework.util.MultiValueMap; importorg.springframework.web.reactive.function.BodyInserters; importorg.springframework.web.reactive.function.client.WebClient; importreactor.core.publisher.Mono; importjava.time.Duration; importjava.time.temporal.ChronoUnit; publicclassDemoApplicationTests{ privateWebClientwebClient=WebClient.builder() .baseUrl("http://127.0.0.1:8080") .defaultHeader(HttpHeaders.USER_AGENT,"Mozilla/5.0(WindowsNT10.0;WOW64)AppleWebKit/537.36(KHTML,likeGecko)") .defaultCookie("ACCESS_TOKEN","test_token").build(); @Test publicvoidWebGetDemo(){ try{ Monoresp=webClient.method(HttpMethod.GET).uri("api/getHeader?id={id}&name={name}",123,"abc") .retrieve() .bodyToMono(MyData.class); MyDatadata=resp.block(); System.out.println("WebGetDemoresult-----"+data.getString()); }catch(Exceptione){ e.printStackTrace(); } } @Test publicvoidWebPostDemo(){ MultiValueMap formData=newLinkedMultiValueMap<>(2); formData.add("id","456"); formData.add("name","xyz"); Mono response=webClient.method(HttpMethod.POST).uri("/api/getPost") .contentType(MediaType.APPLICATION_FORM_URLENCODED) .body(BodyInserters.fromFormData(formData)) .retrieve() .bodyToMono(MyData.class).timeout(Duration.of(10,ChronoUnit.SECONDS)); System.out.println(response); MyDatadata=response.block(); System.out.println("WebPostDemoresult-----"+data.getString()); } @Test publicvoidWebPostJson(){ MyDatarequestData=newMyData(); requestData.setId(789); requestData.setName("lmn"); Mono response=webClient.post().uri("/api/getPostJson") .contentType(MediaType.APPLICATION_JSON_UTF8) .syncBody(requestData) .retrieve() .bodyToMono(MyData.class).timeout(Duration.of(10,ChronoUnit.SECONDS)); MyDatadata=response.block(); System.out.println("WebPostJsonresult-----"+data.getString()); } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持毛票票。
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