Java中的Apache HttpClient，instream.toString = org.apache.http.conn.EofSensorInputStream

Question

我正在使用Apache HttpClient獲取一個頁面，我想將服務器應答的http正文存儲到一個字符串中，以便我可以操縱此字符串並打印到控制檯。

不幸的是運行此方法時，我得到這個消息發回：

17:52:01,862 INFO Driver:53 - fetchPage STARTING 
17:52:07,580 INFO Driver:73 - fetchPage ENDING, took 5716 
org.apache.http.conn.EofSensorInputStream@5e0eb724 

的fetchPage類：

public String fetchPage(String part){ 
    log.info("fetchPage STARTING"); 
    long start = System.currentTimeMillis(); 

    String reply; 

    String searchurl = URL + URL_SEARCH_BASE + part + URL_SEARCH_TAIL; 

    HttpClient httpclient = new DefaultHttpClient(); 
    HttpGet httpget = new HttpGet(searchurl); 
    HttpResponse response; 
    try { 
     response = httpclient.execute(httpget); 
     HttpEntity entity = response.getEntity(); 
     if (entity != null) { 
      InputStream instream = entity.getContent(); 
      int l; 
      byte[] tmp = new byte[2048]; 
      while ((l = instream.read(tmp)) != -1) { 
      } 
      long elapsedTimeMillis = System.currentTimeMillis()-start; 
      log.info("fetchPage ENDING, took " + elapsedTimeMillis); 
      reply = instream.toString(); 
      System.out.println(reply); 
      return reply; 
     } 
    } catch (ClientProtocolException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    return null; 
} 

Answer 1

您正在呼籲InputStream中的toString後，已經通讀。你需要從字節數組中創建你的字符串。更簡單的方式來獲得內容的字符串版本是使用EntityUtils.toString(HttpEntity)

確切IMPL會是什麼樣子：

import org.apache.http.util.EntityUtils; 

public String fetchPage(String part){ 
    log.info("fetchPage STARTING"); 
    long start = System.currentTimeMillis(); 

    String reply; 

    String searchurl = URL + URL_SEARCH_BASE + part + URL_SEARCH_TAIL; 

    HttpClient httpclient = new DefaultHttpClient(); 
    HttpGet httpget = new HttpGet(searchurl); 
    HttpResponse response; 
    try { 
     response = httpclient.execute(httpget); 
     HttpEntity entity = response.getEntity(); 
     if (entity != null) { 
      return EntityUtils.toString(entity); 
     } 
    } catch (ClientProtocolException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    return null; 
}