建立服务器访问其他服务器

package xcy;

import java.io.IOException;
import java.net.URLEncoder;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;

@WebServlet("/list")
public class Xcy extends HttpServlet {
    private static final long serialVersionUID = 1L;

    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 1     ñ  뷽ʽ
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=UTF-8");
        // 2            Ϣ
        String key = req.getParameter("key"); // ctrl + shift + L   ܽ   
        key = URLEncoder.encode(key,"UTF-8"); // %A8%A5%AA
        // 3        ֤
        // 4         ݿ 
        // 5        ֵ
        // Զ ̵    ӿ      ֵĽӿ 
        // java   ʿ      ֵĽӿ : httpClient
            // 1>    HttpClient    
            HttpClient httpClient = new HttpClient();
            // 2>      Ӧ      ʽ      GetMethod  PostMethod
            String url = "http://kuwo.cn/api/www/search/searchMusicBykeyWord?key="+key+"&pn=1&rn=30&httpsStatus=1&reqId=5087bc20-3f92-11eb-8461-5f085ce62d18";
            GetMethod getMethod = new GetMethod(url);
            // 3>ʹ  getMehtod              ͷ  Ϣ
            getMethod.setRequestHeader("Cookie", "Hm_lvt_cdb524f42f0ce19b169a8071123a4797=1608118293; Hm_lpvt_cdb524f42f0ce19b169a8071123a4797=1608118293; _ga=GA1.2.1648469662.1608118293; _gid=GA1.2.408464032.1608118293; _gat=1; kw_token=8JLSPB6J1ET");
            getMethod.setRequestHeader("csrf", "8JLSPB6J1ET");
            getMethod.setRequestHeader("Referer", "http://kuwo.cn/search/list?key=%E5%91%A8%E6%9D%B0%E4%BC%A6");
            getMethod.setRequestHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36");
            // 4>ʹ  httpClient  ִ  getMethod    
            int sta = httpClient.executeMethod(getMethod);

            byte[] body = getMethod.getResponseBody();
            String data = new String(body);
            resp.setHeader("Access-Control-Allow-Origin", "*");
            resp.getWriter().write(data);
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }

}

package xcy;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;

@WebServlet("/get")
public class XcyOne extends HttpServlet {
    private static final long serialVersionUID = 1L;
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1,设置编码方式
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=UTF-8");
        //2，处理请求信息
        String rid = req.getParameter("rid");
        
        //3，使用httpclient链接酷我音乐
        HttpClient httpClient = new HttpClient();
        GetMethod getMethod = new GetMethod("https://kuwo.cn/url?format=mp3&rid="+rid+"&response=url&type=convert_url3&br=128kmp3&from=web&t=1608168223781&httpsStatus=1&reqId=80ae4c61-4006-11eb-b4b1-b5e210c11b6b");
        int sta = httpClient.executeMethod(getMethod);
        if(sta !=HttpStatus.SC_OK) {
            System.out.println("服务器出错，请重新检验");
        }
        byte[] body = getMethod.getResponseBody();
        String data = new String(body);
        //4，给出相应信息
        resp.setHeader("Access-Control-Allow-Origin", "*");
        resp.getWriter().write(data);
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        doGet(request, response);
    }

}