java 用url登录后获得网页数据json

package com.easycom.controller.web;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.CookiePolicy;
import java.net.HttpCookie;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
@RequestMapping("/historyInformationController")
public class HistoryInformationController {

    @RequestMapping("/getData")
    @ResponseBody
    public void getData(HttpServletRequest request, HttpServletResponse response) {
        String urlLogin = request.getParameter("urlLogin");
        String urlDataOne = request.getParameter("urlDataOne");
        BufferedReader  br = null;
        PrintWriter out = null;
        try {
            CookieManager manager=new CookieManager();
            manager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
            CookieHandler.setDefault(manager);
            String responseCookie = null;
            URL url = new URL(urlLogin);
            HttpURLConnection conn= (HttpURLConnection) url.openConnection();
            List<HttpCookie> lCookies = manager.getCookieStore().getCookies();
            responseCookie = conn.getHeaderField("Set-Cookie");// 取到所用的Cookie
            for (HttpCookie cookie: lCookies) {
                responseCookie = cookie.toString();
            }
            if(lCookies.size() > 0){
                responseCookie = lCookies.get(0).toString();
            }
            URL url1 = new URL(urlDataOne);
            URLConnection conn1 =  url1.openConnection();
            conn1.setDoOutput(true);
            conn1.setRequestProperty("Cookie", responseCookie);
            br = new BufferedReader(new InputStreamReader(conn1.getInputStream(),"utf-8"));
            StringBuffer result = new StringBuffer();
            String line = null;
            while ( (line = br.readLine()) != null) {
                result.append(line);
            }
            out = response.getWriter();
            response.setContentType("application/text;charset=utf-8;");
            out.write(result.toString());
            br.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if(out != null){
                out.close();
            }
            
        }
    }
    
    public static void main(String agrs[]) throws Exception{
    }
}