在android中使用post在服务器上上传图像是给源文件不存在吗？

Question

我正在使用此代码上传图像，但平板电脑中没有 sd 卡我想从内部存储上传图像如何执行此操作我正在尝试此代码，但始终找不到源文件

这是我上传图片的代码

来自内部存储的默认图像

int response= uploadFile("/mnt/sdcard/Eiffel.jpg");

 public int uploadFile(String sourceFileUri) {

              String upLoadServerUri = "http://cssthemeclub.com/demo/vixxa_hotel/index.php/login/webchangeimage";
              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);

              if (!sourceFile.isFile())
              {
               Log.e("uploadFile", "Source File Does not exist");
               return 0;
              }
                  try { // open a URL connection to the Servlet
                   FileInputStream fileInputStream = new FileInputStream(sourceFile);
                   URL url = new URL(upLoadServerUri);
                   conn = (HttpURLConnection) url.openConnection(); // Open a HTTP  connection to  the URL
                   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);
                   bytesAvailable = fileInputStream.available(); // create a buffer of  maximum size
                   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.e("server response codde",""+serverResponseCode);
                   Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
                   if(serverResponseCode == 200)
                   {


                       runOnUiThread(new Runnable() {
                            public void run() {


                                tv.setText("File Upload Completed.");
                                Toast.makeText(HomeActivity.this, "File Upload Complete.", Toast.LENGTH_SHORT).show();
                            }
                        });               
                   }   

                   //close the streams //
                   fileInputStream.close();
                   dos.flush();
                   dos.close();

              } catch (MalformedURLException ex) { 
                  dialog.dismiss(); 
                  ex.printStackTrace();
                  Toast.makeText(HomeActivity.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
                  Log.e("Upload file to server", "error: " + ex.getMessage(), ex); 
              } catch (Exception e) {
                  dialog.dismiss(); 
                  e.printStackTrace();
                  Toast.makeText(HomeActivity.this, "Exception : " + e.getMessage(), Toast.LENGTH_SHORT).show();
                  Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e); 
              }
              dialog.dismiss();      
              return serverResponseCode; 
             } 

Answer 1

试试这个：

String imageFilename =  Environment.getExternalStorageDirectory().getPath()+"Eiffel.jpg";

而不是：

String imageFilename =  "/mnt/sdcard/Eiffel.jpg";

编辑：

运行此测试

File myFile = new File(imageFilename);

if(myFile.exists()){

    Toast.makeText(SimpleTest.this, "<<<< this file exists, it is: "+imageFilename+" >>>>",
    Toast.LENGTH_LONG).show();

} else if(!myFile.exists()){

    Toast.makeText(SimpleTest.this, "<<<< this file does not exist >>>> ",
    Toast.LENGTH_LONG).show();
}

谢谢。

Answer 2

HttpPost httpPost = new HttpPost(URL);

httpPost.setHeader("Authorization", "headerstufs");

String path = PATH TO file;
HttpClient httpclient = new DefaultHttpClient();

FileEntity f = new FileEntity(new File(path), "image/jpeg");

try {
    httpPost.setEntity(f);
   HttpParams params =  new BasicHttpParams();
    httpPost.setParams(params);
    httpclient.execute(httpPost);
} catch (ClientProtocolException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

确保在你的清单中有这个。

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />