java获取重定向后的的url

喜欢ヅ旅行 2022-02-27 03:14 614阅读 0赞

package com.numberone.master.modules.test;
     
     
     
    import java.io.BufferedReader;
    import java.io.DataOutputStream;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.PrintWriter;
    import java.net.HttpURLConnection;
    import java.net.URL;
    import java.net.URLConnection;
    import java.util.List;
    import java.util.Map;
     
     
     
     
      
     
    public class GetPostTest {
        public static String sendGet(String url) {
            String result = "";
            String urlName = url;
            try {
                URL realURL = new URL(urlName);
                URLConnection conn = realURL.openConnection();
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36");
                conn.connect();
                Map<String, List<String>> map = conn.getHeaderFields();
                for (String s : map.keySet()) {
                    System.out.println(s + "-->" + map.get(s));
                }
                BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));
                String line;
                while ((line = in.readLine()) != null) {
                    result += "\n" + line;
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return result;
        }
      
        public static String sendPost(String url,String param){
            String result = "";
            HttpURLConnection conn = null;  
            try {
                URL realUrl = new URL(url);
                conn =    (HttpURLConnection) realUrl.openConnection();
                 
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36");
                conn.setInstanceFollowRedirects(true);
                conn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接
                conn.setInstanceFollowRedirects(true);
                 
                conn.setInstanceFollowRedirects(false);
                conn.setDoOutput(true);
                conn.setRequestMethod("POST");
                conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
                //post设置如下两行
                conn.setDoOutput(true);
                conn.setDoInput(true);
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);//这一行必须要写，因为要将参数放在outputStream中输出
                //PrintWriter out = new PrintWriter(conn.getOutputStream());
                //out.print(param);
                PrintWriter out =new PrintWriter(conn.getOutputStream());
                //out.write(param);
                out.print(param);  //写入缓存
                out.flush();
                        
                BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(),"utf-8"));// 发送请求参数
                String line;
                while((line = in.readLine()) != null){
                    result +="\n" + line;
                        }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return result;
        }
     
        public static void main(String[] args) {
            String param = "Search%2FAirlineMode=false&Search%2FcalendarCacheSearchDays=60&Search%2FcalendarSearched=false&dropOffLocationRequired=false&Search%2FsearchType=F&searchTypeValidator=F&xSellMode=false&Search%2FflightType=oneway&destinationLocationSearchBoxType=L&Search%2FisUserPrice=1&Search%2FOriginDestinationInformation%2FOrigin%2Flocation=CITY_BJS_CN&Search%2FOriginDestinationInformation%2FOrigin%2Flocation_input=%E5%8C%97%E4%BA%AC&Search%2FOriginDestinationInformation%2FDestination%2Flocation=CITY_CTU_CN&Search%2FOriginDestinationInformation%2FDestination%2Flocation_input=%E6%88%90%E9%83%BD&Search%2FDateInformation%2FdepartDate_display=2018-09-06&Search%2FDateInformation%2FdepartDate=2018-09-06&Search%2FDateInformation%2FreturnDate=2018-09-05&Search%2FcalendarSearch=false&Search%2FPassengers%2Fadults=1&Search%2FPassengers%2Fchildren=0&Search%2FpromotionCode=";
            //String param = "";
            String sendRecvPost =GetPostTest.sendPost("http://flights.sichuanair.com/3uair/ibe/common/processSearchForm.do",param);
            System.out.println(sendRecvPost);
        }
         
    }

转载来源：[https://www.52pojie.cn/thread-791217-1-1.html][https_www.52pojie.cn_thread-791217-1-1.html]

[https_www.52pojie.cn_thread-791217-1-1.html]: https://www.52pojie.cn/thread-791217-1-1.html