【接口】HttpClient 处理get和post请求(二)（2019-07-14 18:41）

一、环境准备

1.导入httpClient依赖包

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.2</version>
</dependency>

导入fastJson依赖实现实体类序列化和json反序列操作

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.54</version>
</dependency>

testng依赖

<dependency>
        <groupId>org.testng</groupId>
        <artifactId>testng</artifactId>
        <version>6.8.8</version>
        <scope>test</scope>
</dependency>

二、Get请求发包代码实现

package test;

import java.util.Arrays;
import java.util.HashMap;

import org.apache.http.Header;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.testng.Assert;
import org.testng.annotations.Test;

import com.alibaba.fastjson.JSONObject;

public class HttpClientTest {
    String url = "http://localhost:8081/user/login";
    String get_params = "username=xiaobing&password=123456";
    @Test
    public  void GetTest() {
        //创建HttpGet对象
        HttpGet httpGet = new HttpGet(url+"?"+get_params);
        //准备HttpClient客户端
        CloseableHttpClient httpClient =HttpClients.createDefault();
        CloseableHttpResponse httpResponse = null;
        try {
            //发送请求
            httpResponse  = httpClient.execute(httpGet);
        } catch (Exception e) {
            e.printStackTrace();
        }
        //取出响应状态码
        int code = httpResponse.getStatusLine().getStatusCode();
        System.out.println("响应码："+code);
        //取出消息头
        Header[] header = httpResponse.getAllHeaders();
        System.out.println("消息头:"+Arrays.toString(header));
        //取出响应报文
        String result = null;
        try {
            //使用EntityUtils工具类将Entity实体类toString转换
            result = EntityUtils.toString(httpResponse.getEntity());
            System.out.println("响应报文："+result);
        } catch (Exception e) {
            e.printStackTrace();
        }
        HashMap<String, String> map  = JSONObject.parseObject(result, HashMap.class);
        String actual = map.get("message");
        System.out.println("actual_message:"+actual);
        String expected = "登录成功";
        //断言
        Assert.assertEquals(actual, expected);
    }
}

响应码：200
消息头:[Content-Type: application/json;charset=UTF-8, Transfer-Encoding: chunked, Date: Sun, 14 Jul 2019 14:06:44 GMT]
响应报文：{"status":"1","message":"登录成功"}
actual_message:登录成功
PASSED: GetTest
===============================================
    Default test
    Tests run: 1, Failures: 0, Skips: 0
===============================================
===============================================
Default suite
Total tests run: 1, Failures: 0, Skips: 0
===============================================

三、POST请求发包代码实现（表单方式）

服务端：

@RestController//控制器类
@RequestMapping("/user")//映射路径
public class UserController {
    @RequestMapping(value="/login",method=RequestMethod.POST,consumes="application/x-www-form-urlencoded")
    public Result login(User user) {
　　 。。。 。。。
}

客户端：

@Test
public void postFormSend() {
    //测试数据准备
    String url = "http://localhost:8081/user/login";
    String params = "username=xiaobing&password=123456";
    //创建HttpPost对象
    HttpPost httpPost = new HttpPost(url);
    //将Content-Type类型添加到消息头
    Header header = new BasicHeader("Content-Type","application/x-www-form-urlencoded;charset=utf-8");
    httpPost.addHeader(header);
    //将表单参数添加到Entity实体类放到请求体
    HttpEntity entity = new StringEntity(params, "UTF-8");
    httpPost.setEntity(entity);
    //准备HttpClient客户端
    CloseableHttpClient httpClient =HttpClients.createDefault();
    CloseableHttpResponse httpResponse = null;
    try {
        //发起请求
        httpResponse =httpClient.execute(httpPost);
    } catch (Exception e) {
        e.printStackTrace();
    }
    int code = httpResponse.getStatusLine().getStatusCode();
    System.out.println("响应码："+code);
    Header[] resHeader = httpResponse.getAllHeaders();
    System.out.println("消息头："+Arrays.toString(resHeader));
    HttpEntity httpEntity = httpResponse.getEntity();
    String result = null;
    try {
        result = EntityUtils.toString(httpEntity);
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("响应报文："+result);
    HashMap<String, String> map  = JSONObject.parseObject(result, HashMap.class);
    String actual = map.get("message");
    System.out.println("actual_message:"+actual);
    String expected = "登录成功";
    //断言
    Assert.assertEquals(actual, expected);

}

响应码：200
消息头：[Content-Type: application/json;charset=UTF-8, Transfer-Encoding: chunked, Date: Sun, 14 Jul 2019 15:13:53 GMT]
响应报文：{"status":"1","message":"登录成功"}
actual_message:登录成功
PASSED: postFormSend
===============================================
    Default test
    Tests run: 1, Failures: 0, Skips: 0
===============================================
===============================================
Default suite
Total tests run: 1, Failures: 0, Skips: 0
===============================================

四、POST请求发包代码实现（Json方式）

服务端：

@RestController//控制器类
@RequestMapping("/user")//映射路径
public class UserController {
    @RequestMapping(value="/login",method=RequestMethod.POST,consumes="application/json")
    public Result login(@RequestBody(required=false)User user) {
    。。。 。。。
}

客户端：

@Test
public void postJsonSend() {
    //测试数据准备
    String url = "http://localhost:8081/user/login";
    String params = "{\"username\":\"xiaobing\",\"password\":\"123456\"}";
    //创建HttpPost对象
    HttpPost httpPost = new HttpPost(url);
    //将Content-Type类型添加到消息头
    Header header = new BasicHeader("Content-Type","application/json;charset=utf-8");
    httpPost.addHeader(header);
    //将表单参数添加到Entity实体类放到请求体
    HttpEntity entity = new StringEntity(params, "UTF-8");
    httpPost.setEntity(entity);
    //准备HttpClient客户端
    CloseableHttpClient httpClient =HttpClients.createDefault();
    CloseableHttpResponse httpResponse = null;
    try {
        //发起请求
        httpResponse =httpClient.execute(httpPost);
    } catch (Exception e) {
        e.printStackTrace();
    }
    int code = httpResponse.getStatusLine().getStatusCode();
    System.out.println("响应码："+code);
    Header[] resHeader = httpResponse.getAllHeaders();
    System.out.println("消息头："+Arrays.toString(resHeader));
    HttpEntity httpEntity = httpResponse.getEntity();
    String result = null;
    try {
        result = EntityUtils.toString(httpEntity);
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println("响应报文："+result);
    HashMap<String, String> map  = JSONObject.parseObject(result, HashMap.class);
    String actual = map.get("message");
    System.out.println("actual_message:"+actual);
    String expected = "登录成功";
    //断言
    Assert.assertEquals(actual, expected);

}

响应码：200
消息头：[Content-Type: application/json;charset=UTF-8, Transfer-Encoding: chunked, Date: Sun, 14 Jul 2019 15:18:53 GMT]
响应报文：{"status":"1","message":"登录成功"}
actual_message:登录成功
PASSED: postJsonSend
===============================================
    Default test
    Tests run: 1, Failures: 0, Skips: 0
===============================================
===============================================
Default suite
Total tests run: 1, Failures: 0, Skips: 0
===============================================

五、代码整合

未完待续。。。