HttpClient是Apache HttpComponents项目下的一个组件，是Commons-HttpClient的升级版，两者api调用写法也很类似。文中所使用到的软件版本：Java 1.8.0_191、HttpClient 4.5.10。
1、服务端 2、调用Http接口 2.1、GET请求public static void get() { String requestPath = "http://localhost:8080/demo/httptest/getUser?userId=1000&userName=李白"; CloseableHttpClient httpClient = HttpClients.createDefault(); try { HttpGet get = new HttpGet(requestPath); CloseableHttpResponse response = httpClient.execute(get); System.out.println("GET返回状态：" + response.getStatusLine()); HttpEntity responseEntity = response.getEntity(); System.out.println("GET返回结果：" + EntityUtils.toString(responseEntity)); //流畅api调用 String result = Request.Get(requestPath).execute().returnContent().asString(Charset.forName("utf-8")); System.out.println("GET fluent返回结果：" + result); } catch (Exception e) { e.printStackTrace(); } finally { close(httpClient); } }