2019-08-08 java调用http请求添加参数

springBoot中添加：

<dependency>

<groupId>com.amazonaws</groupId>

<artifactId>aws-java-sdk-core</artifactId>

<version>1.10.30</version>

<scope>test</scope>

</dependency>

依赖，测试类中吧下面代码考进来，执行即可。

package com.suyl.designpattern;

import org.apache.http.HttpEntity;

import org.apache.http.NameValuePair;

import org.apache.http.ParseException;

import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.client.utils.URIBuilder;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.boot.test.context.SpringBootTest;

import org.springframework.test.context.junit4.SpringRunner;

import java.io.IOException;

import java.net.URISyntaxException;

import java.util.LinkedList;

import java.util.List;

@RunWith(SpringRunner.class)

@SpringBootTest

public class DesignpatternApplicationTests {

@Test

    public void getParams() {

// 获取连接客户端工具

        CloseableHttpClient httpClient = HttpClients.createDefault();

String entityStr =null;

CloseableHttpResponse response =null;

try {

/*

            * 由于GET请求的参数都是拼装在URL地址后方，所以我们要构建一个URL，带参数*/

            URIBuilder uriBuilder =new URIBuilder("http://localhost:8888/admin/login?logout=1");

/** 第一种添加参数的形式 */

/*uriBuilder.addParameter("name", "root");

uriBuilder.addParameter("password", "123456");*/

            /** 第二种添加参数的形式 */

            List list =new LinkedList<>();

BasicNameValuePair param1 =new BasicNameValuePair("name","suyl");

BasicNameValuePair param2 =new BasicNameValuePair("password","123456");

list.add(param1);

list.add(param2);

uriBuilder.setParameters(list);

// 根据带参数的URI对象构建GET请求对象

            HttpGet httpGet =new HttpGet(uriBuilder.build());

/*

            * 添加请求头信息*/

            // 浏览器表示

            httpGet.addHeader("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6)");

// 传输的类型

            httpGet.addHeader("Content-Type","application/x-www-form-urlencoded");

// 执行请求

            response = httpClient.execute(httpGet);

response.getEntity();

// 获得响应的实体对象

            HttpEntity entity = response.getEntity();

// 使用Apache提供的工具类进行转换成字符串

            entityStr = EntityUtils.toString(entity,"UTF-8");

}catch (ClientProtocolException e) {

System.err.println("Http协议出现问题");

e.printStackTrace();

}catch (ParseException e) {

System.err.println("解析错误");

e.printStackTrace();

}catch (URISyntaxException e) {

System.err.println("URI解析异常");

e.printStackTrace();

}catch (IOException e) {

System.err.println("IO异常");

e.printStackTrace();

}finally {

// 释放连接

            if (null != response) {

try {

response.close();

httpClient.close();

}catch (IOException e) {

System.err.println("释放连接出错");

e.printStackTrace();

}

}

}

// 打印响应内容

        System.out.println(entityStr);

}

@Test

    public void postParams() {

// 获取连接客户端工具

        CloseableHttpClient httpClient = HttpClients.createDefault();

String entityStr =null;

CloseableHttpResponse response =null;

try {

// 创建POST请求对象

            HttpPost httpPost =new HttpPost("http://localhost:8888/admin/login?logout=1");

/*

            * 添加请求参数*/

            // 创建请求参数

            List list =new LinkedList<>();

BasicNameValuePair param1 =new BasicNameValuePair("username","yilian");

BasicNameValuePair param2 =new BasicNameValuePair("password","1234560");

list.add(param1);

list.add(param2);

// 使用URL实体转换工具

            UrlEncodedFormEntity entityParam =new UrlEncodedFormEntity(list,"UTF-8");

httpPost.setEntity(entityParam);

/*

            * 添加请求头信息*/

            // 浏览器表示

            httpPost.addHeader("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6)");

// 传输的类型

            httpPost.addHeader("Content-Type","application/x-www-form-urlencoded");

// 执行请求

            response = httpClient.execute(httpPost);

// 获得响应的实体对象

            HttpEntity entity = response.getEntity();

// 使用Apache提供的工具类进行转换成字符串

            entityStr = EntityUtils.toString(entity,"UTF-8");

// System.out.println(Arrays.toString(response.getAllHeaders()));

        }catch (ClientProtocolException e) {

System.err.println("Http协议出现问题");

e.printStackTrace();

}catch (ParseException e) {

System.err.println("解析错误");

e.printStackTrace();

}catch (IOException e) {

System.err.println("IO异常");

e.printStackTrace();

}finally {

// 释放连接

            if (null != response) {

try {

response.close();

httpClient.close();

}catch (IOException e) {

System.err.println("释放连接出错");

e.printStackTrace();

}

}

}

// 打印响应内容

        System.out.println(entityStr);

}

}