在Android中讀取文件和遠程上傳時出錯

Question

我的應用程序要求用戶選擇一個已上傳到PHP腳本的文件。 當用戶選擇文件時，將返回正確的URI，但是當我嘗試訪問文件時，出現FileNotFound錯誤。 以下是onActivityResult代碼：

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);
}

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

在AsyncTask UploadFile中，我正在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).

這就是我上傳文件的方式：

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();
    }
}

如何解決文件未找到異常？ 我不知道為什么它不起作用！

Answer 1

檢查您的getPath()函數。 它可能沒有為給定的URI發送正確的路徑。