Android：无法使用 php 脚本将图像上传到远程 MySql DB

Posted 2023-02-24

【中文标题】Android：无法使用 php 脚本将图像上传到远程 MySql DB

【英文标题】：Android: Impossible upload image to remote MySql DB with php script

【发布时间】：2013-01-28 21:07:57

【问题描述】：

我在这个问题上花了 2 周时间。我写了下面的代码（android和php）。看起来还可以，但不能正常工作或不能正常工作。客户端Android似乎发送了一些东西服务器端收到了一些东西，但我不知道它是什么。

在客户端 Android 和服务器上的代码下方。

谢谢。

…
Uri uriTarget = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, new    ContentValues());
uri_Target=uriTarget.toString();
OutputStream imageFileOS;
try 

imageFileOS = getContentResolver().openOutputStream(uriTarget);
imageFileOS.write(arg0);
imageFileOS.flush();
imageFileOS.close();

Toast.makeText(ActSismicoCamera_New.this, "Image saved: " + uriTarget.toString(),Toast.LENGTH_LONG).show(); 
SharedPreferences preferences = getPreferences(MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("percorso",uri_Target);            
editor.commit(); 
inviaPosizione(uri_Target); 
 
catch (FileNotFoundException e) 
           
e.printStackTrace();
 
catch (IOException e) 
           
e.printStackTrace();

camera.startPreview();

…
--------------------------------------------------------------------------------------
private void inviaPosizione(String percorso)

InputStream is=null;
try

String uri_Target;
SharedPreferences preferences = getPreferences(MODE_PRIVATE);
uri_Target = preferences.getString("percorso", null);          
Uri imageUri = Uri.parse(uri_Target);          
String filenamelastPhoto;
filenamelastPhoto = getLastImage(imageUri);        
File sdCard = Environment.getExternalStorageDirectory();
File directory = new File (sdCard.getAbsolutePath()+ "/DCIM/Camera/");
File immagine = new File(directory, filenamelastPhoto); //or any other format supported
if(immagine.exists()) 

 Toast.makeText(ActSismicoCamera_New.this, "ESISTE = "+immagine, Toast.LENGTH_LONG).show();        

Bitmap bitmapOrg = BitmapFactory.decodeFile(immagine.toString()); 
    ByteArrayOutputStream bao = new ByteArrayOutputStream();
try
                  
  bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 60, bao);             
  byte [] ba = bao.toByteArray();
  Toast.makeText(ActSismicoCamera_New.this, "inviaPosizione Valore ba= " + ba, Toast.LENGTH_LONG).show();
  int flag = 1;
  String ba1 = Base64.encodeBytes(ba,flag);
  ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
  nameValuePairs.add(new BasicNameValuePair("tag","registra"));
  nameValuePairs.add(new BasicNameValuePair("media",ba1));
  StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
  StrictMode.setThreadPolicy(policy);
  HttpClient httpclient = new DefaultHttpClient();
  httpclient.getParams().setParameter(CoreProtocolPNames.USER_AGENT, "Custom user agent");
  HttpPost httppost = new
  HttpPost("http://xxxxx.org/AndActSismicoUploadFile.php");
               httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
               HttpResponse response = httpclient.execute(httppost);
               HttpEntity entity = response.getEntity();
               is = entity.getContent();
           
           catch(Exception e)
           
               Toast.makeText(ActSismicoCamera_New.this, "inviaPosizione Exception su HttpClient: " + e.toString(), Toast.LENGTH_LONG).show();
           
           try 
           
       BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
       StringBuilder sb = new StringBuilder();
       String line = null;
       while ((line = reader.readLine()) != null) 
       
        sb.append(line + "\n");
       
       is.close();
       json = sb.toString();                         
     
            catch (Exception e) 
    
        Log.e("Buffer Error", "Error converting result " + e.toString());
    

     
     catch (Exception e) 
           
       e.printStackTrace();
               

PHP 脚本

<?php     
require_once 'DB_Funzioni.php';
if (isset($_POST['tag']) && $_POST['tag'] != '') 
  
$tag = $_POST['tag'];
$oggetto = $_POST['media'];

if (isset($_POST['media'])) 
       
    header('Content-Type: bitmap;charset-utf-8');                       
if(move_uploaded_file($_FILES["media"]["tmp_name"],"immagini/" . $_FILES["media"]["name"])) 
    
        echo "The file ". $_FILES['media']['name']." has been uploaded";
        $info="The file ". basename( $_FILES['media']['name'])." has been uploaded";
        mail ($destinatario, $ogg, $info);
    
    else
    
        $info="Problema!";
        mail ($destinatario, $ogg, $info);
        switch ($_FILES['media']['error'])
          
                    case 1:
        echo "The uploaded file exceeds the upload_max_filesize directive in php.ini";
        $info="The uploaded file exceeds the upload_max_filesize directive in php.ini!";
        mail ($destinatario, $ogg, $info);
        break;
        case 2:
        echo "The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the html form";
        $info="The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form!";
        mail ($destinatario, $ogg, $info);
        break;
        case 3:
        echo "Only part of the file was uploaded";                     
        $info="Only part of the file was uploaded!";
        mail ($destinatario, $ogg, $info);
        break;
        case 4:
        echo "No file was uploaded";
        $info="No file was uploaded!";
        mail ($destinatario, $ogg, $info);
        break;             
        case 6:
        echo "Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3";
        $info="Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3!";
        mail ($destinatario, $ogg, $info);
        break; 
        case 7:
        echo "Failed to write file to disk. Introduced in PHP 5.1.0";
        $info="Failed to write file to disk. Introduced in PHP 5.1.0!";
        mail ($destinatario, $ogg, $info);
        break;
        case 8:
        echo "A PHP extension stopped the file upload";
        $info="A PHP extension stopped the file upload!";
        mail ($destinatario, $ogg, $info);
        break;                       
        
    

    $response = array("tag" => $tag, "success" => 0, "error" => 0);
        $db = new DB_Functions();       
    $fileName = $_FILES['media']['name'];
    $tmpName = $_FILES['media']['tmp_name'];
    $fileSize = $_FILES['media']['size'];
    $fileType = $_FILES['media']['type'];       
    $fp      = fopen($tmpName, 'r');
    $content = fread($fp, filesize($tmpName));
    $content = addslashes($content);
    move_uploaded_file($_FILES["media"]["tmp_name"],"immagini/" . $_FILES["media"]["name"]);
    fclose($fp);

    if(!get_magic_quotes_gpc())
    
        $fileName = addslashes($fileName);
           
    $file = $db->storeFile($fileName);  
    if ($file)
    
        $response["success"] = 1;
        //$response["filename"]["id"] = $file["filename"];
        $response["filename"]= $tmpName ;
        echo json_encode($response);
             
    Else
    
                 // user failed to store
                $response["error"] = 1;
                //$response["error_msg"] = "Error occured in Insert";
                $response["error_msg"] = mysql_error();
                echo json_encode($response);
        
  
  Else
    
               $response = array("tag" => $tag, "success" => 0, "error" => 0);                  
                $response["error"] = 1;
                $response["error_msg"] = "Media vuoto";                 
                echo json_encode($response);
                    

//mysql_close();
?>

【问题讨论】：

总是很高兴看到非英文的变量名...这使得阅读代码变得如此简单易懂...

为什么不让它转储它得到的任何东西，也许还有 SERVER 变量到一个文件中进行调试？

我使用外部服务提供商。我该怎么做？

它无法工作，因为对于图片，您需要内容类型 multipart ... 在 android 中可能是“MultiPartEntity”？见：useandgain.blogspot.de/2012/06/…

【参考方案1】：

这不是一个完整的答案......我会在我们进行的过程中完成这个答案......

首先，我建议您检查您是否获得了您应该获得的帖子数据。请将其插入到顶部之后：

if (isset($_POST['tag']) && $_POST['tag'] != '') 
  

...

file_put_contents ("mydebugdata.txt",json_encode($_POST));

这应该将脚本接收的数据转储到文件“mydebugdata.txt”... json_encode() 给 $_POST 一些结构......所以你可以读取数据......

然后尝试保存图片并在此处发布 mydebugdata.txt 的内容...