httpclient GET 和POST 请求

GET请求

 

@SpringBootTest
public class HttpClientTest {

    /**
     * 测试通过httpclient发送get请求
     */
    @Test
    public void testGET() throws IOException {
        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //创建请求对象
        HttpGet httpGet = new HttpGet("http://localhost:8080/user/shop/status");

        //发送请求,接受响应结果
        CloseableHttpResponse response = httpClient.execute(httpGet);

        //获取服务端返回的状态码
        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println("服务端返回的状态码:" + statusCode);
        //获得具体的响应数据
        //获得响应体
        HttpEntity entity = response.getEntity();
        //解析HttpEntity对象  转化为string字符串
        String body = EntityUtils.toString(entity);
        //响应体body
        System.out.println("服务端返回的数据为:" + body);

        //关闭资源
        response.close();
        httpClient.close();
    }

POST请求

    /**
     * 测试通过httpclient发送post请求
     */
    @Test
    public void testPOST() throws IOException {
        //创建httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //创建请求对象
        HttpPost httpPost = new HttpPost("http://localhost:8080/admin/employee/login");

        //post需要传参数  设置请求参数65-76

        //用jsonobject 把字符串转出来
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("username", "admin");
        jsonObject.put("password", "123456");

        //jsonObject.toJSONString()   构造JSON格式的字符串
        //设置请求参数
        StringEntity entity = new StringEntity(jsonObject.toJSONString());
        //指定请求编码方法
        entity.setContentEncoding("UTF-8");
        //指定数据格式
        entity.setContentType("application/json");
        //数据封装到 httpPost 里面去
        httpPost.setEntity(entity);

        //发送请求
        CloseableHttpResponse response = httpClient.execute(httpPost);

        //解析返回的结果

        int statusCode = response.getStatusLine().getStatusCode();
        System.out.println("响应码为:" + statusCode);

        //具体响应回来的数据
        HttpEntity entity1 = response.getEntity();
        //响应体body
        String body = EntityUtils.toString(entity1);
        System.out.println("响应数据为"+body);

        //关闭资源
        response.close();
        httpClient.close();
    }
}