java获取百度网盘真实下载链接的方法

本文实例讲述了java获取百度网盘真实下载链接的方法。分享给大家供大家参考。具体如下：

目前还存在一个问题，同一ip在获取3次以后会出现验证码，会获取失败，感兴趣的朋友对此可以加以完善。

返回的list<map<string, object>>  中的map包含：filename( 文件名),url(实链地址)

httprequest.java如下：

import java.io.bufferedreader;
import java.io.ioexception;
import java.io.inputstream;
import java.io.inputstreamreader;
import java.io.randomaccessfile;
import java.lang.reflect.method;
import java.net.httpurlconnection;
import java.net.url;
public class httprequest {
 public static string getdata(string u) throws exception {
  string re="";
    url url = new url(u);
  httpurlconnection httpurlconnection = (httpurlconnection) url
    .openconnection();
  httpurlconnection.setrequestmethod("get");
  httpurlconnection.setdoinput(true);
  httpurlconnection.setdooutput(true);
  inputstream is = httpurlconnection.getinputstream();
  inputstreamreader isr = new inputstreamreader(is);
  bufferedreader bufferedreader = new bufferedreader(isr);
  string il = "";
  while ((il = bufferedreader.readline()) != null) {
   re += il + "\n";
  }
  return re;
 }
}

获取方法：

import java.net.urlencoder;
import java.util.arraylist;
import java.util.hashmap;
import java.util.list;
import java.util.map;
import org.json.jsonarray;
import org.json.jsonobject;
import org.jsoup.jsoup;
import org.jsoup.nodes.document;
public class baidunetdisk {
 public static list<map<string, object>> geturl(string url) throws exception {
  list<string> fs_id = new arraylist<string>();
  list<map<string, object>> list = new arraylist<map<string, object>>();
  document doc = jsoup.connect(url).get();
  string html = doc.tostring();
  int a = html.indexof("{\"typicalpath");
  int b = html.indexof("yundata.getcon");
  int sign_head = html.indexof("yundata.sign = \"");
  int sign_foot = html.indexof("yundata.timestamp");
  int time_head = html.indexof("yundata.timestamp = \"");
  int time_foot = html.indexof("yundata.share_uk");
  int share_id_head = html.indexof("yundata.share_id = \"");
  int share_id_foot = html.indexof("yundata.sign ");
  string sign = html.substring(sign_head, sign_foot);
  sign = sign.substring(sign.indexof("\"") + 1, sign.indexof("\";"));
  string time = html.substring(time_head, time_foot);
  time = time.substring(time.indexof("\"") + 1, time.indexof("\";"));
  string share_id = html.substring(share_id_head, share_id_foot);
  share_id = share_id.substring(share_id.indexof("\"") + 1,
    share_id.indexof("\";"));
  system.out.println(share_id);
  html = html.substring(a, b);
  a = html.indexof("{\"typicalpath");
  b = html.indexof("};");
  jsonarray jsonarray = new jsonarray("[" + html.substring(a, b + 1)
    + "]");
  jsonobject jsonobject = jsonarray.getjsonobject(0);
  string uk = jsonobject.getstring("uk");
  string shareid = jsonobject.getstring("shareid");
  string path = urlencoder.encode(jsonobject.getstring("typicalpath"),
    "utf-8");
  jsonarray = new jsonarray("[" + jsonobject.getstring("file_list") + "]");
  jsonobject = jsonarray.getjsonobject(0);
  jsonarray = new jsonarray(jsonobject.getstring("list"));
  jsonobject = jsonarray.getjsonobject(0);
  string app_id = jsonobject.getstring("app_id");
  if (jsonobject.getstring("isdir").equals("1")) {
   string url1 = "http://pan.baidu.com/share/list?uk="
     + uk
     + "&shareid="
     + shareid
     + "&page=1&num=100&dir="
     + path
     + "&order=time&desc=1&_="
     + time
     + "&bdstoken=c51077ce0e0e313a16066612a13fbcd4&channel=chunlei&clienttype=0&web=1&app_id="
     + app_id;
   string filelistjson = httprequest.getdata(url1);
   system.out.println(filelistjson);
   jsonarray = new jsonarray("[" + filelistjson + "]");
   jsonobject = jsonarray.getjsonobject(0);
   jsonarray = new jsonarray(jsonobject.getstring("list"));
  }
  final int size = jsonarray.length();
  for (int i = 0; i < size; i++) {
   map<string, object> map = new hashmap<string, object>();
   jsonobject = jsonarray.getjsonobject(i);
   string filename = jsonobject.getstring("server_filename");
   map.put("filename", filename);
   fs_id.add(jsonobject.getstring("fs_id"));
   string fileinfo = httprequest
     .getdata("http://pan.baidu.com/api/sharedownload?sign="
       + sign
       + "&timestamp="
       + time
       + "&bdstoken=c51077ce0e0e313a16066612a13fbcd4&channel=chunlei&clienttype=0&web=1&app_id=250528&encrypt=0&product=share&uk="
       + uk + "&primaryid=" + share_id + "&fid_list=%5b"
       + fs_id.get(i) + "%5d");
   jsonarray jsonarray2 = new jsonarray("[" + fileinfo + "]");
   jsonobject json_data = jsonarray2.getjsonobject(0);
   if (json_data.getstring("errno").equals("0")) {
    jsonarray2 = new jsonarray(json_data.getstring("list"));
    json_data = jsonarray2.getjsonobject(0);
    map.put("url", json_data.getstring("dlink"));
   } else if (json_data.getstring("errno").equals("-20")) {
    return null;
    // string getvercode();
   } else {
    return null;
   }
   list.add(map);
  }
  return list;
 }
}

希望本文所述对大家的java程序设计有所帮助。