не удается загрузить файл с помощью HttpClient

Ниже код, что я пытался до сих пор:не удается загрузить файл с помощью HttpClient

try{ 
      DefaultHttpClient httpclient = new DefaultHttpClient(); 

      HttpGet httpget = new HttpGet("http://somewebsite.com"); 

      HttpResponse response = httpclient.execute(httpget); 
      HttpEntity entity = response.getEntity(); 

      System.out.println("Login form get: " + response.getStatusLine()); 
      if (entity != null) { 
       entity.consumeContent();    
      } 
      System.out.println("Initial set of cookies:"); 
      List<Cookie> cookies = httpclient.getCookieStore().getCookies(); 
      if (cookies.isEmpty()) { 
       System.out.println("None"); 
      } else { 
       for (int i = 0; i < cookies.size(); i++) { 
        System.out.println("- " + cookies.get(i).toString()); 
       } 
      } 

      HttpPost httpost = new HttpPost("http://www.somewebsite.com/MemberSingIn"); 

      List<NameValuePair> nvps = new ArrayList<NameValuePair>(); 
      nvps.add(new BasicNameValuePair("email", "USERNAME")); 
      nvps.add(new BasicNameValuePair("password", "PASSWORD")); 
      nvps.add(new BasicNameValuePair("rememberMe", "true")); 

      httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8)); 

      response = httpclient.execute(httpost); 
      entity = response.getEntity(); 

      System.out.println("Login form get: " + response.getStatusLine()); 
      if (entity != null) { 
       entity.consumeContent(); 
      } 

      System.out.println("Post logon cookies:"); 
      cookies = httpclient.getCookieStore().getCookies(); 
      String mySessionId = null; 
      if (cookies.isEmpty()) { 
       System.out.println("None"); 
      } else { 
       for (int i = 0; i < cookies.size(); i++) { 
        if(cookies.get(i).toString().contains("SessionId=")){ 
         int index1 = cookies.get(i).toString().indexOf("SessionId"); 
         String temp = cookies.get(i).toString().substring(index1); 
         int index2 = temp.toString().indexOf("]"); 
         temp = cookies.get(i).toString().substring(index1+10,index1+index2); 
         mySessionId = temp; 
        } 
        System.out.println("- " + cookies.get(i).toString()); 
       } 
      }  

      CookieStore cookieStore = new BasicCookieStore(); 
      BasicClientCookie cookie = new BasicClientCookie("Cookie",mySessionId); 

      cookieStore.addCookie(cookie); 
      httpclient.setCookieStore(cookieStore); 

      httpget = new HttpGet("http://somewebsite.URLTOGETFILE/eTable.txt"); 
      response = httpclient.execute(httpget); 
      entity = response.getEntity(); 
      System.out.println("HEREEEEEEEEEEEEEEEEEEE"); 
      System.out.println(response.toString()); 

      System.out.println("File get: " + response.getStatusLine()); 

      InputStream in = entity.getContent(); 


       File path = new File("/home/mrsevensevenseven/"); 
       path.mkdirs(); 
       File file = new File(path, "myfile.txt"); 
       FileOutputStream fos = new FileOutputStream(file); 

       byte[] buffer = new byte[1024]; 
       int len1 = 0; 
       while ((len1 = in.read(buffer)) > 0) { 
         fos.write(buffer, 0, len1); 
       } 

       fos.close(); 

      httpclient.getConnectionManager().shutdown(); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     }

Он успешно, регистрирует меня, но я не могу еще загрузить файл ... Любая помощь в этой связи будет очень ценится .. Я пробовал много на переполнение стека и прибегая к помощи вокруг, но не могли получить помощь ..

и это ответ ...

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml" > 
<head><title> 
    IBD eTables - Investors.com 
</title><meta property="og:title" content="IBD eTables" /><meta property="og:type" content="article" /><meta property="og:url" content="http://research.investors.com/etables/default.aspx" /><meta property="og:image" content="http://www1.ibdcd.com/images/IBDicon_309171.png" /><meta property="og:site_name" content="Investor's Business Daily" /><meta property="fb:app_id" content="154916351273272" /> 

    <script type="text/javascript"> 
     var divHeight; 
    </script> 
<link href="../App_Themes/eTables/eTablesStyles.css" type="text/css" rel="stylesheet" /> 
    <script type="text/javascript" src="/Scripts/global.js?v=4"></script> 

    <script type="text/javascript" src="/Scripts/Silverlight.js?v=4"></script> 

    <script type="text/javascript" src="/Scripts/LaunchMSTool.js?v=4"></script> 
</head> 

<body> 
<form name="form1" method="post" action="/etables/default.aspx" id="form1"> 
<div> 
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с уважением ...

Mr.777

источник

2013-03-25 dosdebug

Вероятно, не реальная проблема, но эта строка должна быть 'while ((len1 = in.read (buffer))! = -1) {' – jdb

И почему я Это так? Я думаю, что отрицательное число - это EOF, не так ли? – dosdebug

Это может быть 0. И 0 не EOF. – jdb

Хорошо, так что после того, как немного больше исследований и с помощью @jdb я был в состоянии решить эту проблему, и теперь я могу скачать файл с сервера без каких-либо проблем после успешного входа в систему. .. Кстати, спасибо @jdb указал мне в правильном направлении, чтобы заставить меня думать, что именно неправильно :)

код Оклейка здесь, если кто-то когда-либо хотел использовать:

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.InputStream; 
import java.util.ArrayList; 
import java.util.List; 

import org.apache.http.Header; 
import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.HttpVersion; 
import org.apache.http.NameValuePair; 
import org.apache.http.client.entity.UrlEncodedFormEntity; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.cookie.Cookie; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.message.BasicNameValuePair; 
import org.apache.http.params.CoreProtocolPNames; 
import org.apache.http.protocol.HTTP; 


public class DownloadAuthenticatedFile{ 

    public static void main(String... args){ 

     try{ 
      DefaultHttpClient httpclient = new DefaultHttpClient(); 

      HttpGet httpget = new HttpGet("http://website.com"); 

      HttpResponse response = httpclient.execute(httpget); 
      HttpEntity entity = response.getEntity(); 

      System.out.println("Login form get: " + response.getStatusLine()); 
      if (entity != null) { 
       entity.consumeContent();    
      } 
      System.out.println("Initial set of cookies:"); 
      List<Cookie> cookies = httpclient.getCookieStore().getCookies(); 
      if (cookies.isEmpty()) { 
       System.out.println("None"); 
      } else { 
       for (int i = 0; i < cookies.size(); i++) { 
        System.out.println("- " + cookies.get(i).toString()); 
       } 
      } 

      HttpPost httpost = new HttpPost("http://www.somewebsite.com/MemberSingIn"); 

      List<NameValuePair> nvps = new ArrayList<NameValuePair>(); 
      nvps.add(new BasicNameValuePair("email", "USERNAME")); 
      nvps.add(new BasicNameValuePair("password", "PASSWORD")); 
      nvps.add(new BasicNameValuePair("remember", "true")); 

      httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8)); 

      response = httpclient.execute(httpost); 
      entity = response.getEntity(); 

      System.out.println("Login form get: " + response.getStatusLine()); 
      if (entity != null) { 
       entity.consumeContent(); 
      } 

      System.out.println("Post logon cookies:"); 
      cookies = httpclient.getCookieStore().getCookies(); 
      String mySessionId = null; 
      if (cookies.isEmpty()) { 
       System.out.println("None"); 
      } else { 
       for (int i = 0; i < cookies.size(); i++) { 
        if(cookies.get(i).toString().contains("SessionId=")){ 
         int index1 = cookies.get(i).toString().indexOf("SessionId"); 
         String temp = cookies.get(i).toString().substring(index1); 
         int index2 = temp.toString().indexOf("]"); 
         temp = cookies.get(i).toString().substring(index1+10,index1+index2); 
         mySessionId = temp; 
        } 
        System.out.println("- " + cookies.get(i).toString()); 
       } 
      } 

      httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1); 
      httpget = new HttpGet("http://PATHOFWEBSITETOFILE"); 
      response = httpclient.execute(httpget); 
      entity = response.getEntity(); 
      Header[] headers = response.getAllHeaders(); 
      for(int i=0;i<headers.length;i++){ 
       System.out.println("Header: "+headers[i].toString()); 
      } 
      System.out.println(response.toString()); 

      System.out.println("File get: " + response.getStatusLine()); 

      InputStream in = entity.getContent(); 
       File path = new File("/home/mrsevensevenseven"); 
       path.mkdirs(); 
       File file = new File(path, "myfile.xls"); 
       FileOutputStream fos = new FileOutputStream(file); 

       byte[] buffer = new byte[1024]; 
       int len1 = 0; 
       while ((len1 = in.read(buffer)) != -1) { 
         fos.write(buffer, 0, len1); 
       } 

       fos.close(); 

      httpclient.getConnectionManager().shutdown(); 
     }catch(Exception e){ 
      e.printStackTrace(); 
     } 

    } 

}

источник

2013-03-25 21:48:47 dosdebug

не удается загрузить файл с помощью HttpClient

ответ

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