【笔记】java http请求 HttpURLConnection 302 重定向

httpurlconnection con = null;

try {
    string url ="http://.。。。.com";

    // 获取文件流
    con = (httpurlconnection) new url(url).openconnection();
    con.setconnecttimeout(15000);
    con.setreadtimeout(15000);
    con.setinstancefollowredirects(false);
     if (con.getresponsecode() == 302) {
        //如果会重定向，保存302重定向地址，以及cookies,然后重新发送请求(模拟请求)
        string location = con.getheaderfield("location");
         con.disconnect();
         url = location;
         con = (httpurlconnection) new url(url).openconnection();
         con.setconnecttimeout(15000);
         con.setreadtimeout(15000);
      }

}
catch (ioexception e) {

}