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手撸了一个网络请求工具类，开发速度迅速提升了300%( 二 )

工具类

  • 最后，我们来做一下单元测试，使用案例如下，接口api还是基于上篇文章提供的服务
@RunWith(SpringRunner.class)@SpringBootTestpublic class HttpControllerJunit {@Autowiredprivate HttpTemplate httpTemplate;/*** get请求测试*/@Testpublic void testGet(){//请求地址String url = "http://localhost:8080/testGet";//发起请求,直接返回对象ResponseBean responseBean = httpTemplate.get(url, createHeader("get"), ResponseBean.class);System.out.println(responseBean.toString());}/*** get请求测试，restful风格*/@Testpublic void testGetByRestFul(){//请求地址String url = "http://localhost:8080/testGetByRestFul/{1}";//发起请求,直接返回对象（restful风格）ResponseBean responseBean = httpTemplate.get(url, createHeader("testGetByRestFul"), ResponseBean.class, "张三");System.out.println(responseBean.toString());}/*** 模拟表单提交，post请求*/@Testpublic void testPostByForm(){//请求地址String url = "http://localhost:8080/testPostByFormAndObj";//表单参数Map<String, Object> paramMap = new HashMap<>();paramMap.put("userName", "唐三藏");paramMap.put("userPwd", "123456");//发起请求ResponseBean responseBean = httpTemplate.postByFrom(url, createHeader("testPostByFormAndObj"), paramMap, ResponseBean.class);System.out.println(responseBean.toString());}/*** 模拟JSON提交，post请求*/@Testpublic void testPostByJson(){//请求地址String url = "http://localhost:8080/testPostByJson";//入参RequestBean request = new RequestBean();request.setUserName("唐三藏");request.setUserPwd("123456789");//发送post请求，并打印结果，以String类型接收响应结果JSON字符串ResponseBean responseBean = httpTemplate.postByJson(url, createHeader("testPostByJson"), request, ResponseBean.class);System.out.println(responseBean.toString());}/*** 重定向，post请求，json方式提交*/@Testpublic void testPostByLocation(){//请求地址String url = "http://localhost:8080/testPostByLocation";//入参RequestBean request = new RequestBean();request.setUserName("唐三藏");request.setUserPwd("123456789");//用于提交完成数据之后的页面跳转String uri = httpTemplate.postForLocation(url,createHeader("testPostByLocation"), request);System.out.println(uri);}/*** put请求，json方式提交*/@Testpublic void testPutByJson(){//请求地址String url = "http://localhost:8080/testPutByJson";//入参RequestBean request = new RequestBean();request.setUserName("唐三藏");request.setUserPwd("123456789000");//模拟JSON提交，put请求ResponseBean responseBean = httpTemplate.put(url,createHeader("testPutByJson"), request, ResponseBean.class);System.out.println(responseBean.toString());}/*** delete请求，json方式提交*/@Testpublic void testDeleteByJson(){//请求地址String url = "http://localhost:8080/testDeleteByJson";//模拟JSON提交，delete请求ResponseBean responseBean = httpTemplate.delete(url,createHeader("testDeleteByJson"), ResponseBean.class);System.out.println(responseBean.toString());}/*** 文件上传，post请求*/@Testpublic void uploadFile(){//需要上传的文件String filePath = "/Users/panzhi/Desktop/Jietu20220205-194655.jpg";//请求地址String url = "http://localhost:8080/upload";//提交参数设置MultiValueMap<String, Object> param = new LinkedMultiValueMap<>();param.add("uploadFile", new FileSystemResource(new File(filePath)));//服务端如果接受额外参数，可以传递param.add("userName", "张三");ResponseBean responseBean = httpTemplate.uploadFile(url, createHeader("uploadFile"), param, ResponseBean.class);System.out.println(responseBean.toString());}/*** 小文件下载* @throws IOException*/@Testpublic void downloadFile() throws IOException {String userName = "张三";String fileName = "f9057640-90b2-4f86-9a4b-72ad0e253d0d.jpg";//请求地址String url = "http://localhost:8080/downloadFile/{1}/{2}";//发起请求,直接返回对象（restful风格）byte[] stream = httpTemplate.downloadFile(url, createHeader("downloadFile"), userName,fileName);// 将下载下来的文件内容保存到本地String targetPath = "/Users/panzhi/Desktop/"+ fileName;Files.write(Paths.get(targetPath), Objects.requireNonNull(stream, "未获取到下载文件"));}/*** 大文件下载* @throws IOException*/@Testpublic void downloadBigFile() {String userName = "张三";String fileName = "f9057640-90b2-4f86-9a4b-72ad0e253d0d.jpg";String targetPath = "/Users/panzhi/Desktop/"+ fileName;//请求地址String url = "http://localhost:8080/downloadFile/{1}/{2}";//对响应进行流式处理而不是将其全部加载到内存中httpTemplate.downloadBigFile(url, createHeader("downloadBigFile"), clientHttpResponse -> {Files.copy(clientHttpResponse.getBody(), Paths.get(targetPath));return null;}, userName, fileName);}/*** 自定义请求头部* @param value* @return*/private Map<String, String> createHeader(String value){Map<String, String> headers = new HashMap<>();headers.put("token", value);return headers;}}


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