從Android發送Base64圖像與JSON到PHP Web服務，解碼，保存到SQL

Question

像描述說的，我正在Android拍照。它被壓縮並添加到byte[]，然後base64encoded。它與JSON發送到我的web服務，它被「假定」被解碼並保存在SQL錶行中。我可以將編碼的字符串保存在一個單獨的行中，所以我知道它到達那裏。

任何人都可以看看這個，並告訴我我做錯了嗎？ *對於冗長的代碼抱歉。如果被提供幫助，我不想錯過任何東西！

ANDROID SIDE

@Override 
    protected String doInBackground(String... args) { 
     // TODO Auto-generated method stub 
     // Check for success tag 

     int success; 
     stream = new ByteArrayOutputStream(); 
     picture.compress(Bitmap.CompressFormat.JPEG, 50, stream); 
     image = stream.toByteArray(); 

     String ba1 = Base64.encodeToString(image, Base64.DEFAULT); 

     SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(MainScreen.this); 
     String post_username = sp.getString("username", "anon"); 

     try { 
      ArrayList<NameValuePair> params = new ArrayList<NameValuePair>(); 
      params.add(new BasicNameValuePair("username", post_username)); 
      params.add(new BasicNameValuePair("picture", ba1)); 

      JSONObject json = jsonParser.makeHttpRequest(POST_COMMENT_URL, 
        "POST", params); 


      success = json.getInt(TAG_SUCCESS); 
      if (success == 1) { 
       Log.d("Picture Added!", json.toString()); 
       //finish(); 
       return json.getString(TAG_MESSAGE); 
      } else { 
       Log.d("Upload Failure!", json.getString(TAG_MESSAGE)); 
       return json.getString(TAG_MESSAGE); 

      } 
     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 

     return null; 

    } 

    protected void onPostExecute(String file_url) { 
     // dismiss the dialog once product deleted 
     pDialog.dismiss(); 
     if (file_url != null) { 
      Toast.makeText(MainScreen.this, file_url, Toast.LENGTH_LONG) 
        .show(); 
     } 

    } 
} 

} 

PHP端

<?php 
require("config.inc.php"); 
if (!empty($_POST)) { 
    $user = $_POST['username']; 
    $data = $_POST['picture']; 
    $data = base64_decode($data); 
    $im = imagecreatefromstring($data); 
    header('Content-Type: image/jpeg', true); 
    ob_start(); 
    imagejpeg($im); 
    $imagevariable = ob_get_contents(); 
    ob_end_clean(); 

$query = "INSERT INTO pictures (username, photo, rawdata) VALUES (:user, :photo, :raw) "; 

$query_params = array(
    ':user' => $user, 
    ':photo' => $imagevariable, 
    ':raw' => $_POST['picture'] 
); 

try { 
    $stmt = $db->prepare($query); 
    $result = $stmt->execute($query_params); 
} 
catch (PDOException $ex) { 
    $response["success"] = 0; 
    $response["message"] = "Database Error. Couldn't add post!"; 
    die(json_encode($response)); 
} 
$response["success"] = 1; 
$response["message"] = "Picture Successfully Added!"; 
echo json_encode($response); 

} else { 
} 
?> 

Answer 1

我想後我的情況下，其他人是否有這個麻煩解決方案。我總是來到S.O.所以現在輪到我幫助別人了。我使用位圖時遇到內存不足錯誤。我將其更改爲多部分文章，將圖片作爲文件和字符串上傳到他們的名字中，但您可以添加任何字符串。第一部分是android側，下面是數據庫的php。使用移動文件方法將圖片添加到目錄中的文件。數據庫存儲該圖片的路徑。我搜索了兩天，將所有內容從堆棧溢出文章中分離出來。

ANDROID

public void onClick(View v) { 
    if (v.getId() == R.id.capture_btn) { 
     try { 

      Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
      startActivityForResult(intent, CAMERA_IMAGE_CAPTURE); 

     } catch (ActivityNotFoundException anfe) { 

      String errorMessage = "Whoops - your device doesn't support capturing images!"; 
      Toast toast = Toast.makeText(this, errorMessage, 
        Toast.LENGTH_SHORT); 
      toast.show(); 

     } 

    } 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    if (requestCode == CAMERA_IMAGE_CAPTURE 
      && resultCode == Activity.RESULT_OK) { 
     getLastImageId(); 

     new PostPicture().execute(); 
    } 
} 

private int getLastImageId() { 
    // TODO Auto-generated method stub 
    final String[] imageColumns = { MediaStore.Images.Media._ID, 
      MediaStore.Images.Media.DATA }; 
    final String imageOrderBy = MediaStore.Images.Media._ID + " DESC"; 
    Cursor imageCursor = managedQuery(
      MediaStore.Images.Media.EXTERNAL_CONTENT_URI, imageColumns, 
      null, null, imageOrderBy); 
    if (imageCursor.moveToFirst()) { 
     int id = imageCursor.getInt(imageCursor 
       .getColumnIndexOrThrow(MediaStore.Images.Media._ID)); 
     fullPath = imageCursor.getString(imageCursor 
       .getColumnIndex(MediaStore.Images.Media.DATA)); 
     Log.d("pff", "getLastImageId: :id " + id); 
     Log.d("pff", "getLastImageId: :path " + fullPath); 
     return id; 

    } else { 
     return 0; 
    } 
} 

class PostPicture extends AsyncTask<String, String, String> { 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     pDialog = new ProgressDialog(MainScreen.this); 
     pDialog.setMessage("Uploading Picture"); 
     pDialog.setIndeterminate(false); 
     pDialog.setCancelable(true); 
     pDialog.show(); 

    } 

    @Override 
    protected String doInBackground(String... args) { 
     // TODO Auto-generated method stub 
     // Check for success tag 

     HttpClient client = new DefaultHttpClient(); 
     HttpPost post = new HttpPost("http://www.your-php-page.php"); 

     try { 

      MultipartEntity entity = new MultipartEntity(
        HttpMultipartMode.BROWSER_COMPATIBLE); 
      File file = new File(fullPath); 
      cbFile = new FileBody(file, "image/jpeg"); 
      Log.d("sending picture", "guest name is " + guest_name); 
      Log.d("Sending picture", "guest code is " + guest_code); 
      entity.addPart("name", 
        new StringBody(guest_name, Charset.forName("UTF-8"))); 
      entity.addPart("code", 
        new StringBody(guest_code, Charset.forName("UTF-8"))); 
      entity.addPart("picture", cbFile); 
      post.setEntity(entity); 

      HttpResponse response1 = client.execute(post); 
      HttpEntity resEntity = response1.getEntity(); 
      String Response = EntityUtils.toString(resEntity); 
      Log.d("Response", Response); 

     } catch (IOException e) { 
      Log.e("asdf", e.getMessage(), e); 

     } 
     return null; 

    } 

    protected void onPostExecute(String file_url) { 
     // dismiss the dialog once product deleted 
     pDialog.dismiss(); 
     if (file_url != null) { 
      Toast.makeText(MainScreen.this, file_url, Toast.LENGTH_LONG) 
        .show(); 
     } 

    } 
} 

這是PHP。另外請注意，我包括我的數據庫登錄頁面。你可以輸入你的d.b.密碼和登錄在這裏，但我選擇不。

<?php 
require("config.inc.php"); 
if (!empty($_POST)) { 

if (empty($_POST['name'])) { 
    $response["success"] = 0; 
    $response["message"] = "Did not receive a name"; 
    die(json_encode($response));   
} else { 
    $name = $_POST['name']; 
} 


if (empty($_FILES['picture'])) { 
    $response["success"] = 0; 
    $response["message"] = "Did not receive a picture"; 
    die(json_encode($response));   
} else { 
    $file = $_FILES['picture']; 
} 


    $target_path = "uploads/whatever-you-want-it-to-be/"; 
      // It could be any string value above 

    /* Add the original filename to our target path. 
    Result is "uploads/filename.extension" */ 
    $target_path = $target_path . basename($_FILES['picture']['name']); 

    if(move_uploaded_file($_FILES['picture']['tmp_name'], $target_path)) { 
     echo "The file ". basename($_FILES['picture']['name']). 
     " has been uploaded"; 
    } else{ 
     $response["success"] = 0; 
     $response["message"] = "Database Error. Couldn't upload file."; 
     die(json_encode($response)); 
    } 

} else { 
    $response["success"] = 0; 
    $response["message"] = "You have entered an incorrect code. Please try again."; 
    die(json_encode($response)); 
} 

$query = "INSERT INTO name-of-table (directory, name, photo) VALUES (directory, :name, :photo) "; 

$query_params = array(
    ':directory' => $directory, 
    ':name' => $name, 
    ':photo' => $_FILES['picture']['name'] 
     ); 

try { 
    $stmt = $db->prepare($query); 
    $result = $stmt->execute($query_params); 
} 
catch (PDOException $ex) { 
    $response["success"] = 0; 
    $response["message"] = "Database Error. Couldn't add path to picture"; 
    die(json_encode($response)); 
} 
$response["success"] = 1; 
$response["message"] = "Picture Successfully Added!"; 
die (json_encode($response)); 


} 

?>