在Android中讀取文件和遠程上傳時出錯

-1

我的應用程序要求用戶選擇一個上傳到PHP腳本的文件。當用戶選擇一個文件時，返回正確的URI，但是當我嘗試訪問該文件時，出現FileNotFound錯誤。以下是onActivityResult代碼：在Android中讀取文件和遠程上傳時出錯

private static final int FILE_SELECT_CODE = 1234;  
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    switch (requestCode) { 
     case FILE_SELECT_CODE:  
      if (resultCode == RESULT_OK) { 
       // Get the Uri of the selected file 
       Uri uri = data.getData(); 

       Log.d("file upload register page", "File Uri: " + uri.toString()); 
       try { 
       file_path = FileUtils.getPath(getBaseContext(), uri); 
      } 
       catch (URISyntaxException e) { 
       e.printStackTrace(); 
      } 
      Log.d("file upload register page", "File Path: " + file_path); 
      file = new File(file_path); 
      UploadFile task = new UploadFile(); 
      task.execute(); 
     }   
     break; 
    } 
super.onActivityResult(requestCode, resultCode, data); 
}

Fileetils.getPath函數返回給定URI的路徑。根據日誌，我返回的路徑是： file：///mnt/sdcard/bluetooth/Tutorial%201.pdf

在AsyncTask UploadFile中，我將文件上傳到遠程服務器。我得到一個錯誤

java.io.FileNotFoundException: /file:/mnt/sdcard/bluetooth/Tutorial%201.pdf (No such file or directory).

這是我上傳的文件：

public void newUpload() 
{ 
    HttpEntity resEntity; 
    try { 
     HttpClient httpclient = new DefaultHttpClient(); 

     HttpPost httppost = new HttpPost(url); 

     InputStreamEntity reqEntity = new InputStreamEntity(new FileInputStream(file), -1); 
     reqEntity.setContentType("binary/octet-stream"); 
     reqEntity.setChunked(true); // Send in multiple parts if needed 
     httppost.setEntity(reqEntity); 
     HttpResponse response_http = httpclient.execute(httppost); 
     //Do something with response... 
     resEntity = response_http.getEntity(); 
     response = EntityUtils.toString(resEntity); 
     Log.d("response",response); 
    } 
    catch (Exception e) { 
     e.printStackTrace(); 
    } 
}

如何解決未發現異常文件？我不知道爲什麼它不工作！

來源

2013-04-12 shiladitya

當你做'新的FileInputStream（文件）'，'文件'的確切值是什麼？我不認爲'/ file：/ mnt/sdcard/bluetooth/Tutorial％201.pdf'應該有一個前導'/'' –

檢查您的getPath()功能。它可能不會爲給定的URI發送正確的路徑。

來源

2013-04-21 18:17:17 user2304987

你是對的。問題出在getPath（）函數本身。 – shiladitya

在Android中讀取文件和遠程上傳時出錯

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