httpClient请求 带Authorization（授权）username password的REST API 返回JSON数据

引入：

	
		commons-httpclient
		commons-httpclient
		3.1
	

java代码:

package com.test.HttpClient

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import javax.xml.bind.DatatypeConverter;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**

• httpClient请求 带Authorization（授权）username password的REST API 返回JSON数据
  

• @author lemon

• @since 2019-5-20
  */
  public class JavaNetURLRESTFulClient {
  public static void main(String[] args) throws ClientProtocolException, IOException {
  //认证信息对象，用于包含访问翻译服务的用户名和密码
  String path = “yourURL”;
  //1.创建客户端访问服务器的httpclient对象 打开浏览器
  HttpClient httpclient = new DefaultHttpClient();
  //2.以请求的连接地址创建get请求对象 浏览器中输入网址
  HttpGet httpget = new HttpGet(path);

   //username:password--->访问的用户名，密码,并使用base64进行加密，将加密的字节信息转化为string类型，encoding--->token
   String encoding = DatatypeConverter.printBase64Binary("USERNAME:PASSWORD!".getBytes("UTF-8"));
  
   httpget.setHeader("Authorization", "Basic " + encoding);
   //3.向服务器端发送请求 并且获取响应对象  浏览器中输入网址点击回车
   HttpResponse response = httpclient.execute(httpget);
   //4.获取响应对象中的响应码
   StatusLine statusLine = response.getStatusLine();//获取请求对象中的响应行对象
   int responseCode = statusLine.getStatusCode();//从状态行中获取状态码
  
   System.out.println(responseCode);
   if (responseCode == 200) {
       //5.  可以接收和发送消息
       HttpEntity entity = response.getEntity();
       //6.从消息载体对象中获取操作的读取流对象
       InputStream input = entity.getContent();
       BufferedReader br = new BufferedReader(new InputStreamReader(input));
       String str1 = br.readLine();
       String result = new String(str1.getBytes("gbk"), "utf-8");
       System.out.println("服务器的响应是:" + result);
       br.close();
       input.close();
   } else {
       System.out.println("响应失败!");
   }
  

  }
  }