java.io.FileNotFoundException：在服務器

Question

我試圖獲取一組從服務器的文件檢索一組文件從一個文件夾，使用getfile()，我得到這個異常：

java.io .FileNotFoundException：E：\ SERVER \服務器內容\ APPS \圖標（訪問被拒絕）

這裏是我的代碼：

DownloadController downloadcontroller = null; 
try { 
    downloadcontroller = ServerConnector.getServerConnector().getDownloadController(); 
} catch (NotBoundException ex) { 
    Logger.getLogger(HomeUI_2Controller.class.getName()).log(Level.SEVERE, null, ex); 
} catch (MalformedURLException ex) { 
    Logger.getLogger(HomeUI_2Controller.class.getName()).log(Level.SEVERE, null, ex); 
} catch (RemoteException ex) { 
    Logger.getLogger(HomeUI_2Controller.class.getName()).log(Level.SEVERE, null, ex); 
} 

RemoteInputStream file = null; 
try { 
    file = downloadcontroller.getFile("E:\\SERVER\\Server Content\\Apps\\icons"); 
} catch (IOException ex) {} 

public RemoteInputStream getFile(String fileName) throws IOException { 
    // create a RemoteStreamServer (note the finally block which only releases 
    // the RMI resources if the method fails before returning.) 

    //read data 
    RemoteInputStreamServer istream = null; 
    try { 
     File file = new File(fileName); 
     System.out.println(file.exists()); 
     FileInputStream fileInputStream = new FileInputStream(file); 

     BufferedInputStream bufferedInputStream = new BufferedInputStream(
       fileInputStream); 
     istream = new SimpleRemoteInputStream(bufferedInputStream); 
     // export the final stream for returning to the client 

     //send data 
     RemoteInputStream result = istream.export(); 
     // after all the hard work, discard the local reference (we are passing 
     // responsibility to the client) 
     istream = null; 
     return result; 
    } finally { 
     // we will only close the stream here if the server fails before 
     // returning an exported stream 
     if (istream != null) { 
      istream.close(); 
     } 
    } 
} 

Logger.getLogger(HomeUI_2Controller.class.getName()).log(Level.SEVERE, null, ex); 

Answer 1

你不能打開和讀取目​​錄，使用isFil e（）和isDirectory（）方法來區分文件和文件夾。 您可以使用list（）和listFiles（）方法（分別用於文件名和文件）獲取文件夾的內容，還可以指定一個篩選器來選擇列出的文件的子集。