1. 介绍

2. 发送Get方式请求

public void httpGetTest() throws Exception{
        // 创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建请求方式对象
        HttpGet httpGet = new HttpGet("http://localhost/user/shop/status");
        // 发送请求
        CloseableHttpResponse response = httpClient.execute(httpGet);
        // 解析响应结果
        // 获取响应状态码
        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println("响应状态码为, " +  statusCode);
        // 获取响应结果
        HttpEntity entity = response.getEntity();
        String body = EntityUtils.toString(entity);
        System.out.println("响应结果为：" + body);
        
        // 关闭资源
        response.close();
        httpClient.close();
    }

3. 发送Post方式请求

public void httpPostTest() throws Exception {
        // 创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建请求方式对象
        HttpPost httpPost = new HttpPost("http://localhost:8080/admin/employee/login");
        // 构建请求参数
        JSONObject params = new JSONObject();
        params.put("username", "admin");
        params.put("password", "123456");
        System.out.println(params.toString());
        StringEntity entity = new StringEntity(params.toString());

        // 设置请求参数类型和编码格式
        entity.setContentEncoding("utf-8");
        entity.setContentType("application/json");
        httpPost.setEntity(entity);
        // 发送请求
        CloseableHttpResponse response = httpClient.execute(httpPost);
        // 解析响应结果
        // 获取响应状态码
        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println(statusCode);
        // 获取响应结果
        HttpEntity responseEntity = response.getEntity();
        String result = EntityUtils.toString(responseEntity);
        System.out.println(result);
        // 释放资源
        response.close();
        httpClient.close();
    }