Question

我使用PHP通过XAMPP服务器创建了图像上传。但我需要知道如何从Android删除上传的图像文件。我怎么能这样做？

php file(upload) : 

<?PHP
if(isset($_POST['image'])){


    $now = DateTime::createFromFormat('U.u', microtime(true));
    $id  = $now->format('YmdHisu');

    $upload_folder = "upload/";
    $path = "$upload_folder/$id.jpeg";
    $image = $_POST['image'];


    if(file_put_contents($path, base64_decode($image)) != false){
        echo "uploaded_success";
        exit;
    }
    else 
    {
    echo "Sorry, your file is too large.";
    echo "upload_failed";
    exit;
    }                                                                                                                        
    }
    else{

    echo "image_not_in";
    exit;


}
?>

Answer 1

您可以在服务器的成功响应中获取照片路径并将其删除！确保你在清单中声明权限！

<uses-permission> android:name="android.permission.WRITE_INTERNAL_STORAGE" />

在您的代码..

PostResponseAsyncTask task = new PostResponseAsyncTask(MainActivity.this, postData, new AsyncResponse() {


        @Override
        public void processFinish(String s) {


            if (s.contains("uploaded_success")) {
                File photoDelete = new File(selectedPhoto);
                if (photoDelete.exists()) {
                    if (photoDelete.delete()) {
                        Log.d("DELETE", "deleted:" + selectedPhoto);
                    }
                }
                Toast.makeText(getApplicationContext(), "Image Uploaded Successfully", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getApplicationContext(), "Error while uploading...", Toast.LENGTH_SHORT).show();
            }

        }
    });

Answer 2

您可以通过从应用程序（客户端）向服务器发送命令从服务器中删除图像，要求服务器从本地存储中删除该文件。

假设您将图像文件的imageName设置为hashmap，以便通过以下方式发送到服务器：

HashMap<String, String> postData = new HashMap<String, String>();
postData.put("deleteImage", imageName);

并执行它：

task.execute("http://192.168.1.7/news/delete.php");

现在，您只需要查看deleteImage的值是否已设置（在您的服务器上，在delete.php文件中），并通过在PHP中调用unlink方法删除该文件：

<强> Delete.php

<?PHP
   if(isset($_POST['deleteImage'])){
      $imageName = $_POST['deleteImage'];
      unlink($imageName) //this deletes the image file
   }
?>

如何从服务器删除已上传的图像文件？

2 个答案: