java - HttpClientを使用してファイルをダウンロードできません

Question

以下のコードは私がこれまでに試したことです：

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();
        }

正常にログインしましたが、まだファイルをダウンロードできません...この点に関するヘルプは大歓迎です。スタックオーバーフローとグーグルで多くのことを試しましたが、ヘルプを得ることができませんでした。

そしてこれが応答です...

<!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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        <img src="http://www1.ibdcd.com/Images/eTables/px.gif" width="20" height="20" alt="" />
    </a>



    <script type="text/javascript">
        document.write(unescape("%3Cscript src='" + (document.location.protocol == "https:" ? "https://sb" : "http://b") + ".scorecardresearch.com/beacon.js' %3E%3C/script%3E"));
    </script>
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</body>
</html>

よろしく...

Mr.777

score 1 · Accepted Answer

了解しました。もう少し調査した後、@ jdbの助けを借りてこの問題を解決できました。ログインに成功した後、問題なくサーバーからファイルをダウンロードできるようになりました...ちなみに、@jdbに感謝します。私を正しい方向に向けて、何が間違っているのかを考えさせます:)

他の誰かが使用したい場合は、ここにコードを貼り付けます。

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();
        }

    }

}

java - HttpClientを使用してファイルをダウンロードできません

1 に答える 1

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