Android：如何將.mp3文件和圖像上傳到http服務器？

Question

我上傳圖片到服務器的代碼是：

String userIdParameter = String.valueOf(userId); 
    String fileName = "temporary_holder.jpg"; 
    HttpURLConnection conn = null; 
    DataOutputStream dos = null; 

    String lineEnd = "\r\n"; 
    String twoHyphens = "--"; 
    String boundary = "*****"; 
    int bytesRead, bytesAvailable, bufferSize; 
    byte[] buffer; 
    int maxBufferSize = 1 * 1024 * 1024; 

    String sourceFileUri = HomeScreen.get_path(); 
    String upLoadServerUri = "http://10.120.10.87:8080/WebImage/UploadImage"; 

    File sourceFile = new File(sourceFileUri); 
    if (!sourceFile.isFile()) { 
     Log.e("Huzza", "Source File Does not exist"); 
     return; 
    } 
    int serverResponseCode = 0; 
    try { 

     // open a URL connection to the Servlet 
     FileInputStream fileInputStream = new FileInputStream(sourceFile); 

     // ------------------ CLIENT REQUEST 
     URL url = new URL(upLoadServerUri); 

     // Open a HTTP connection to the URL 
     conn = (HttpURLConnection) url.openConnection(); 
     conn.setDoInput(true); // Allow Inputs 
     conn.setDoOutput(true); // Allow Outputs 
     conn.setUseCaches(false); // Don't use a Cached Copy 

     // Use a post method. 
     conn.setRequestMethod("POST"); 
     conn.setRequestProperty("Connection", "Keep-Alive"); 

     conn.setRequestProperty("ENCTYPE", "multipart/form-data"); 
     conn.setRequestProperty("Content-Type", 
      "multipart/form-data;boundary=" + boundary); 
     conn.setRequestProperty("file_name", fileName); 
     conn.setRequestProperty("file_name_audio", fileName); 
     conn.setRequestProperty("X-myapp-param1", userIdParameter); 

     // conn.setFixedLengthStreamingMode(1024); 
     // conn.setChunkedStreamingMode(1); 

     dos = new DataOutputStream(conn.getOutputStream()); 

     dos.writeBytes(twoHyphens + boundary + lineEnd); 

     dos.writeBytes("Content-Disposition: form-data; name=\"file_name\";filename=\"" 
      + fileName + "\"" + lineEnd); 

     dos.writeBytes(lineEnd); 


      // create a buffer of maximum size 
     bytesAvailable = fileInputStream.available(); 

     int streamSize = (int) sourceFile.length(); 
     bufferSize = streamSize/10; 

     System.out.println("streamSize" + streamSize); 

     buffer = new byte[streamSize]; 

     // read file and write it into form... 
     bytesRead = fileInputStream.read(buffer, 0, bufferSize); 
     int count = 0; 
     while (bytesRead > 0) { 
     progress = (int) (count); 
     displayNotification(); 
     Thread.sleep(500); 

     dos.write(buffer, 0, bufferSize); 
     bytesAvailable = fileInputStream.available(); 
     // bufferSize = Math.min(bytesAvailable, maxBufferSize); 
     bytesRead = fileInputStream.read(buffer, 0, bufferSize); 
     count += 10; 

     } 

     // send multipart form data necesssary after file data... 
     dos.writeBytes(lineEnd); 
     dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

     // Responses from the server (code and message) 
     serverResponseCode = conn.getResponseCode(); 
     String serverResponseMessage = conn.getResponseMessage(); 

     System.out.println("Upload file to serverHTTP Response is : " 
      + serverResponseMessage + ": " + serverResponseCode); 
     // close streams 
     System.out.println("Upload file to server" + fileName 
      + " File is written"); 
     fileInputStream.close(); 
     dos.flush(); 
     dos.close(); 
    } catch (MalformedURLException ex) { 
     ex.printStackTrace(); 
     Log.e("Upload file to server", "error: " + ex.getMessage(), ex); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    // this block will give the response of upload link 
    try { 
     BufferedReader rd = new BufferedReader(new InputStreamReader(
      conn.getInputStream())); 
     String line; 
     while ((line = rd.readLine()) != null) { 
     System.out.println("RESULT Message: " + line); 
     } 
     rd.close(); 
    } catch (IOException ioex) { 
     Log.e("Huzza", "error: " + ioex.getMessage(), ioex); 
    } 
    return; // like 200 (Ok) 

圖片上傳到服務器工作正常。我需要同時擁有MP3文件和圖片上傳到server..Please幫助

Answer 1

所以，你要在一個HTTP請求中發送多個文件？我從來沒有這個工作我自己，而是根據RFC，只需添加另一個身體到您發送音頻消息，它應該是這個樣子：

dos = new DataOutputStream(conn.getOutputStream()); 
    dos.writeBytes(twoHyphens + boundary + lineEnd); 
    dos.writeBytes("Content-Disposition: form-data; name=\"file_name\";filename=\"" 
     + fileName + "\"" + lineEnd); 
    dos.writeBytes(lineEnd); 
    // Code for sending the image.... 
    dos.writeBytes(lineEnd); 


    dos.writeBytes(twoHyphens + boundary + lineEnd); 
    dos.writeBytes("Content-Disposition: form-data; name=\"file_name_audio\";filename=\"" 
     + fileNameAudio + "\"" + lineEnd); 
    dos.writeBytes(lineEnd); 
    // Code for sending the MP3 
    dos.writeBytes(lineEnd); 
    dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

確保兩個部件的名稱是不同的（取決於服務器軟件）。