如何將二進制文件從android存儲到mysql

Question

我想將發送的文件從android存儲到mysql，但blob字段爲空。

這是我在PHP代碼

<?php 

    $target_path = "./"; 
    $target_path = $target_path . basename($_FILES['uploadedfile']['name']); 
    if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) { 

    $fileName = $_FILES['uploadedfile']['name']; 
    $tmpName = $_FILES['uploadedfile']['tmp_name']; 
    $fileSize = $_FILES['uploadedfile']['size']; // file size 
    $data = file_get_contents($_FILES['uploadedfile']['tmp_name']); 
    mysql_connect('localhost','root',''); 
    @mysql_select_db('client') or die("<b>Unable to specified database</b>"); 


    $query = "INSERT INTO files   (Username,f_id,PathFilename,DateSent,File,Filesize) 
    VALUES ('d',' ','$fileName',' ',' $data','$fileSize')"; 
    mysql_query($query) or die('Error, query failed'); 
    } 
    else 
    { 
    echo "Weak here"; 
    } 

?> 

這是我的Android

 Log.e(Tag, "Inside second Method"); 

     FileInputStream fileInputStream = new FileInputStream(new File(
       exsistingFileName)); 

     // open a URL connection to the Servlet 

     URL url = new URL(urlString); 


     // Open a HTTP connection to the URL 

     conn = (HttpURLConnection) url.openConnection(); 

     // Allow Inputs 
     conn.setDoInput(true); 

     // Allow Outputs 
     conn.setDoOutput(true); 

     // Don't use a cached copy. 
     conn.setUseCaches(false); 

     // Use a post method. 
     conn.setRequestMethod("POST"); 

     conn.setRequestProperty("Connection", "Keep-Alive"); 

     conn.setRequestProperty("Content-Type", 
       "multipart/form-data;boundary=" + boundary); 

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

     dos.writeBytes(twoHyphens + boundary + lineEnd); 
     dos .writeBytes("Content-Disposition: post-data; name=uploadedfile;filename=" 
         + exsistingFileName + "" + lineEnd); // ito ung file 

     dos.writeBytes(lineEnd); 

     Log.e(Tag, "Headers are written"); 

     // create a buffer of maximum size 

     int bytesAvailable = fileInputStream.available(); 
     int maxBufferSize = 1000; 
     // int bufferSize = Math.min(bytesAvailable, maxBufferSize); 
     byte[] buffer = new byte[bytesAvailable]; 

     // read file and write it into form... 

     int bytesRead = fileInputStream.read(buffer, 0, bytesAvailable); 

     while (bytesRead > 0) { 
      dos.write(buffer, 0, bytesAvailable); 
      bytesAvailable = fileInputStream.available(); 
      bytesAvailable = Math.min(bytesAvailable, maxBufferSize); 
      bytesRead = fileInputStream.read(buffer, 0, bytesAvailable); 
     } 

     // send multipart form data necesssary after file data... 

     dos.writeBytes(lineEnd); 
     dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

     // close streams 
     Log.e(Tag, "File is written"); 
     fileInputStream.close(); 
     dos.flush(); 
     dos.close(); 
    } catch (MalformedURLException ex) { 
     Log.e(Tag, "error: " + ex.getMessage(), ex); 
    } 
    catch(Exception e){ 
    dialog.dismiss(); 
    System.out.println("Exception : " + e.getMessage()); 
    } 

    try { 
     BufferedReader rd = new BufferedReader(new InputStreamReader(conn 
       .getInputStream())); 
     String line; 
     while ((line = rd.readLine()) != null) { 
      Log.e("Dialoge Box", "Message: " + line); 
     } 
     rd.close(); 

    } catch (IOException ioex) { 
     Log.e("MediaPlayer", "error: " + ioex.getMessage(), ioex); 
    } 
} 

代碼的Android上傳的文件已經成功上傳的名稱和文件的大小插入到數據庫 但是文件（字段）的blob字段顯示0B ..請幫助我

Answer 1

嘗試：

$data = mysql_real_escape_string(file_get_contents($_FILES['uploadedfile']['tmp_name'])); 

也許這樣會有幫助