使用索引文件中的以下代码

$(document).ready(function() {
            Dropzone.autoDiscover = false;
            var fileList = new Array;
            var i =0;
            $("#some-dropzone").dropzone({
                addRemoveLinks: true,init: function() {

                    // Hack: Add the dropzone class to the element
                    $(this.element).addClass("dropzone");

                    this.on("success",function(file,serverFileName) {
                        fileList[i] = {"serverFileName" : serverFileName,"fileName" : file.name,"fileId" : i };
                        //console.log(fileList);
                        i++;

                    });
                    this.on("removedfile",function(file) {
                        var rmvFile = "";
                        for(f=0;f<fileList.length;f++){

                            if(fileList[f].fileName == file.name)
                            {
                                rmvFile = fileList[f].serverFileName;

                            }

                        }

                        if (rmvFile){
                            $.ajax({
                                url: "http://localhost/dropzone/sample/delete_temp_files.PHP",type: "POST",data: { "fileList" : rmvFile }
                            });
                        }
                    });

                },url: "http://localhost/dropzone/sample/upload.PHP"
            });

        });

upload.PHP的

<?PHP
$ds = DIRECTORY_SEPARATOR;  // Store directory separator (DIRECTORY_SEPARATOR) to a simple variable. This is just a personal preference as we hate to type long variable name.
$storeFolder = 'uploads';   // Declare a variable for destination folder.
if (!empty($_FILES)) {

    $tempFile = $_FILES['file']['tmp_name'];          // If file is sent to the page,store the file object to a temporary variable.
    $targetPath = dirname( __FILE__ ) . $ds. $storeFolder . $ds;  // Create the absolute path of the destination folder.
    // Adding timestamp with image's name so that files with same name can be uploaded easily.
    $date = new DateTime();
    $newFileName = $date->getTimestamp().$_FILES['file']['name'];
    $targetFile =  $targetPath.$newFileName;  // Create the absolute path of the uploaded file destination.
    move_uploaded_file($tempFile,$targetFile); // Move uploaded file to destination.

    echo $newFileName;
}
?>

delete_temp_files.PHP

<?PHP
$ds = DIRECTORY_SEPARATOR;  // Store directory separator (DIRECTORY_SEPARATOR) to a simple variable. This is just a personal preference as we hate to type long variable name.
$storeFolder = 'uploads'; 

$fileList = $_POST['fileList'];
$targetPath = dirname( __FILE__ ) . $ds. $storeFolder . $ds;


if(isset($fileList)){
    unlink($targetPath.$fileList);
}

?>

希望这将有助于使用ajax上传图像并使用ajax删除:)

我从以下参考文献中找到：

Dropzone.js- How to delete files from server?
Dropzone.js remove button with php

还要在第1110行之后的dropzone.js文件中添加以下代码,以防止用户上传同名的重复文件:)

Dropzone.prototype.addFile = function(file){

if (this.files.length) {
   var _i,_len;
   for (_i = 0,_len = this.files.length; _i < _len; _i++) {
      if(this.files[_i].name === file.name && this.files[_i].size === file.size){
        return false;
      }
    }
  }

参考链接：https://www.bountysource.com/issues/2993843-dropzone-did-not-check-the-duplicate-file-on-addfile?utm_campaign=plugin&utm_content=tracker%2F283989&utm_medium=issues&utm_source=github