Download di un file con DefaultHTTPClient e autenticazione preventiva

Question

Dopo aver avuto molti problemi con l'autenticazione preventiva, ho finalmente funzionato. Ora il prossimo problema. Voglio avere un file con esso, ma non so come. Ho pensato che i dati del file potrebbero essere nella risposta variabile, ma non lo è. Qualche idea su come potrebbe funzionare? Sto cercando da quando giorni senza successo :(-.. Fondamentalmente sto cercando di scaricare un file jpeg, che si trova su un server protetto da prem auth

 // BASIC AUTH 
     /* 
     * ==================================================================== 
     * 
     * Licensed to the Apache Software Foundation (ASF) under one or more 
     * contributor license agreements. See the NOTICE file distributed with 
     * this work for additional information regarding copyright ownership. 
     * The ASF licenses this file to You under the Apache License, Version 2.0 
     * (the "License"); you may not use this file except in compliance with 
     * the License. You may obtain a copy of the License at 
     * 
     *  http://www.apache.org/licenses/LICENSE-2.0 
     * 
     * Unless required by applicable law or agreed to in writing, software 
     * distributed under the License is distributed on an "AS IS" BASIS, 
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
     * See the License for the specific language governing permissions and 
     * limitations under the License. 
     * ==================================================================== 
     * 
     * This software consists of voluntary contributions made by many 
     * individuals on behalf of the Apache Software Foundation. For more 
     * information on the Apache Software Foundation, please see 
     * <http://www.apache.org/>. 
     */ 
     //http://svn.apache.org/repos/asf/httpcomponents/httpclient/branches/4.0.x/httpclient/src/examples/org/apache/http/examples/client/ClientPreemptiveBasicAuthentication.java 
     httpclient = new DefaultHttpClient(); 

     httpclient.getCredentialsProvider().setCredentials(
       new AuthScope(host, port), 
       new UsernamePasswordCredentials(username, password)); 

     // Generate BASIC scheme object and stick it to the local 
     // execution context 
     BasicHttpContext localcontext = new BasicHttpContext(); 

     BasicScheme basicAuth = new BasicScheme(); 
     localcontext.setAttribute("preemptive-auth", basicAuth); 

     //first request interceptor 
     httpclient.addRequestInterceptor(new PreemptiveAuth(), 0); 

     HttpHost targetHost = new HttpHost(host, port, "http"); 

     //HttpGet httpget = new HttpGet("/"); 

     HttpGet httpget = new HttpGet(http.url); 

     System.out.println("executing request" + httpget.getRequestLine()); 
     /// !!! 
     HttpResponse response = httpclient.execute(targetHost, httpget, localcontext); 
     HttpEntity entity = response.getEntity(); 

     System.out.println("----------------------------------------"); 
     System.out.println("+"+response.getStatusLine()+"+"); 
... 

Answer 1

Beh, ho risolto io stesso ora - qui la soluzione:

 StringBuffer tmp = new StringBuffer(); // for content 

     if (entity != null) { 
      InputStream is = entity.getContent(); 

      int l = 0; 
      byte[] t = new byte[1024]; 

      while ((l = is.read(t)) != -1) { 
       for (int i=0; i<l ; i++){ 
        tmp.append((char)t[i]); 
       } 
      } 
     } 

     return tmp.toString();