Android 如何在将文件上载到服务器时重命名文件？

我正在开发一个android应用程序，在该应用程序中，我将以网格视图从图库中获取所有图像，并将其与复选框一起显示。我可以选择图像并将多个图像上载到服务器…但现在在将其上载到服务器之前，我需要根据我的约定重命名我选择的图像…我无法做到这一点！！ 我该怎么做？？？ 有人知道吗？？请帮忙！！我真的需要这样做！！ 我正在获取阵列列表中选定图像的路径

public void btnChoosePhotosClick(View v){

    selectedItems=new ArrayList<String>();
    **selectedItems** = imageAdapter.getCheckedItems();
    Toast.makeText(MultiPhotoSelectActivity.this, "Total photos selected: "+selectedItems.size(), Toast.LENGTH_SHORT).show();
    Log.d(MultiPhotoSelectActivity.class.getSimpleName(), "Selected Items: " + selectedItems.toString());

}

日志猫：

 public int uploadFile(String sourceFileUri) {

      String fileName = sourceFileUri;

      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; 
      File sourceFile = new File(sourceFileUri); 
      upLoadServerUri = "http://10.0.2.2/android/UploadToServer.php";

           try { 

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

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

               dos.writeBytes(twoHyphens + boundary + lineEnd); 
               dos.writeBytes("Content-Disposition: form-data; name=uploaded_file;filename="
                                         + fileName + "" + lineEnd);

               dos.writeBytes(lineEnd);

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

               bufferSize = Math.min(bytesAvailable, maxBufferSize);
               buffer = new byte[bufferSize];

               // read file and write it into form...
               bytesRead = fileInputStream.read(buffer, 0, bufferSize);  

               while (bytesRead > 0) {

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

                }

               // 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();

               Log.i("uploadFile", "HTTP Response is : "
                       + serverResponseMessage + ": " + serverResponseCode);

               if(serverResponseCode == 200){

                  Log.e("Upload ", "Image Uploaded Successfully");      
               }    

               //close the streams //
               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();


          }

          return serverResponseCode; 

        // End else block 
     } 

06-07 06:13:05.538: W/System.err(1011): java.io.FileNotFoundException: /mnt/sdcard/1234_doctype_pageno_1370585584714.jpg: open failed: ENOENT (No such file or directory)
06-07 06:13:05.789: W/System.err(1011):     at java.io.FileInputStream.<init>(FileInputStream.java:78)
06-07 06:13:05.848: W/System.err(1011):     at  com.example.sampletestapp.UploadToServer.uploadFile(UploadToServer.java:61)
06-07 06:13:05.848: W/System.err(1011):     at com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground(MultiPhotoSelectActivity.java:235)
06-07 06:13:05.848: W/System.err(1011):     at com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground(MultiPhotoSelectActivity.java:1)
06-07 06:13:05.848: W/System.err(1011):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-07 06:13:05.848: W/System.err(1011):     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-07 06:13:05.858: W/System.err(1011):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
06-07 06:13:05.868: W/System.err(1011):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-07 06:13:05.868: W/System.err(1011):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-07 06:13:05.868: W/System.err(1011):     at java.lang.Thread.run(Thread.java:856)
06-07 06:13:05.868: W/System.err(1011): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)

06-07 06:13:05.538:W/System.err（1011）：java.io.FileNotFoundException:/mnt/sdcard/1234\u doctype\u pageno\u 1370585584714.jpg:open失败：enoint（没有这样的文件或目录）
06-07 06:13:05.789:W/System.err（1011）：位于java.io.FileInputStream。（FileInputStream.java:78）
06-07 06:13:05.848:W/System.err（1011）：位于com.example.sampletestapp.UploadToServer.uploadFile（UploadToServer.java:61）
06-07 06:13:05.848:W/System.err（1011）：位于com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground（MultiPhotoSelectActivity.java:235）
06-07 06:13:05.848:W/System.err（1011）：位于com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground（MultiPhotoSelectActivity.java:1）
06-07 06:13:05.848:W/System.err（1011）：在android.os.AsyncTask$2.call（AsyncTask.java:287）
06-07 06:13:05.848:W/System.err（1011）：位于java.util.concurrent.FutureTask.run（FutureTask.java:234）
06-07 06:13:05.858:W/System.err（1011）：在android.os.AsyncTask$SerialExecutor$1.run（AsyncTask.java:230）
06-07 06:13:05.868:W/System.err（1011）：位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1080）
06-07 06:13:05.868:W/System.err（1011）：位于java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:573）
06-07 06:13:05.868:W/System.err（1011）：在java.lang.Thread.run（Thread.java:856）
06-07 06:13:05.868:W/System.err（1011）：原因：libcore.io.ErrnoException:open失败：enoint（没有这样的文件或目录）

可能重复@Simon是的，我在google上搜索了一天这个主题…但无法获得我需要的内容..我需要将文件路径传递给uploadFile（）方法..重命名后如何获得路径？？我的代码显示FileNotFound异常检查到.getAbsolutePath（）中的路径是否为空。@Segi我为这个

toast.makeText（MultiPhotoSelectActivity.this，“新文件路径：”+to.getAbsolutePath（），toast.LENGTH_LONG.show（）显示路径..然后将其存储到全局变量中..并将该变量用于传入方法..我刚刚这样做了，但为什么它无法识别文件路径？？？我仍然收到文件未找到异常…然后看看你的图库，里面有那个文件吗？SD卡中的文件是空的！有一个同名的文件，但它是空的！s通过此代码获取图像
MediaStore.images.Media.DATA，MediaStore.images.Media.\u ID
不同于通过此代码获取图像
Environment.getExternalStorageDirectory（）
？？？他们返回不同的路径吗？你能建议在这种情况下可以做什么吗？？？如何使用此路径重命名图像
MediaStore.images.Media.DATA，MediaStore.images.Media.\u ID
并将其上载到服务器？？有什么想法吗？？任何你能想到的我可以参考的例子，让我们来看看
06-07 06:13:05.538: W/System.err(1011): java.io.FileNotFoundException: /mnt/sdcard/1234_doctype_pageno_1370585584714.jpg: open failed: ENOENT (No such file or directory)
06-07 06:13:05.789: W/System.err(1011):     at java.io.FileInputStream.<init>(FileInputStream.java:78)
06-07 06:13:05.848: W/System.err(1011):     at  com.example.sampletestapp.UploadToServer.uploadFile(UploadToServer.java:61)
06-07 06:13:05.848: W/System.err(1011):     at com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground(MultiPhotoSelectActivity.java:235)
06-07 06:13:05.848: W/System.err(1011):     at com.example.sampletestapp.MultiPhotoSelectActivity$SaveImage.doInBackground(MultiPhotoSelectActivity.java:1)
06-07 06:13:05.848: W/System.err(1011):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-07 06:13:05.848: W/System.err(1011):     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-07 06:13:05.858: W/System.err(1011):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
06-07 06:13:05.868: W/System.err(1011):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-07 06:13:05.868: W/System.err(1011):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-07 06:13:05.868: W/System.err(1011):     at java.lang.Thread.run(Thread.java:856)
06-07 06:13:05.868: W/System.err(1011): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory)

String pathvalue;

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
             if (requestCode == SELECT_FILE) {
                Uri selectedImageUri = data.getData();

                String tempPath = getPath(selectedImageUri, ServiceEntry.this);
                Bitmap bm;
                System.out.println(tempPath);
                File filename = new File(tempPath);
                pathvalue = filename.getAbsolutePath()
            }
        }
    }

    public String getPath(Uri uri, Activity activity) {
        String[] projection = { MediaColumns.DATA };
        Cursor cursor = activity
                .managedQuery(uri, projection, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }