试试这个

<div class="dropzone dz-clickable" id="myDrop">
  <div class="dz-default dz-message" data-dz-message="">
    <span>Drop files here to upload</span>
  </div>
</div>

JS

<script>
    Dropzone.autoDiscover = false;
    Dropzone.default.autoDiscover=false;
    $("div#myDrop").dropzone({
        url: "/file/post",
    });
</script>

“dropzone.js”是最常用的上传图像的库。 如果你想让“dropzone.js”只是表单的一部分，你应该执行以下步骤:

1)对于客户端:

HTML:

    <form action="/" enctype="multipart/form-data" method="POST">
        <input type="text" id ="Username" name ="Username" />
        <div class="dropzone" id="my-dropzone" name="mainFileUploader">
            <div class="fallback">
                <input name="file" type="file" multiple />
            </div>
        </div>
    </form>
    <div>
        <button type="submit" id="submit-all"> upload </button>
    </div>

JQuery:

    <script>
        Dropzone.options.myDropzone = {
            url: "/Account/Create",
            autoProcessQueue: false,
            uploadMultiple: true,
            parallelUploads: 100,
            maxFiles: 100,
            acceptedFiles: "image/*",

            init: function () {

                var submitButton = document.querySelector("#submit-all");
                var wrapperThis = this;

                submitButton.addEventListener("click", function () {
                    wrapperThis.processQueue();
                });

                this.on("addedfile", function (file) {

                    // Create the remove button
                    var removeButton = Dropzone.createElement("<button class='btn btn-lg dark'>Remove File</button>");

                    // Listen to the click event
                    removeButton.addEventListener("click", function (e) {
                        // Make sure the button click doesn't submit the form:
                        e.preventDefault();
                        e.stopPropagation();

                        // Remove the file preview.
                        wrapperThis.removeFile(file);
                        // If you want to the delete the file on the server as well,
                        // you can do the AJAX request here.
                    });

                    // Add the button to the file preview element.
                    file.previewElement.appendChild(removeButton);
                });

                this.on('sendingmultiple', function (data, xhr, formData) {
                    formData.append("Username", $("#Username").val());
                });
            }
        };
    </script>

2)服务器端:

ASP。Net MVC

    [HttpPost]
    public ActionResult Create()
    {
        var postedUsername = Request.Form["Username"].ToString();
        foreach (var imageFile in Request.Files)
        {

        }

        return Json(new { status = true, Message = "Account created." });
    }

为了在一个请求中提交所有文件和其他表单数据，您可以将Dropzone.js临时隐藏输入节点复制到您的表单中。你可以在adddedfiles事件处理程序中做到这一点:

var myDropzone = new Dropzone("myDivSelector", { url: "#", autoProcessQueue: false });
myDropzone.on("addedfiles", () => {
  // Input node with selected files. It will be removed from document shortly in order to
  // give user ability to choose another set of files.
  var usedInput = myDropzone.hiddenFileInput;
  // Append it to form after stack become empty, because if you append it earlier
  // it will be removed from its parent node by Dropzone.js.
  setTimeout(() => {
    // myForm - is form node that you want to submit.
    myForm.appendChild(usedInput);
    // Set some unique name in order to submit data.
    usedInput.name = "foo";
  }, 0);
});

显然，这是一种依赖于实现细节的变通方法。相关源代码。

你可以通过捕捉dropzone中的'sending'事件来修改formData。

dropZone.on('sending', function(data, xhr, formData){
        formData.append('fieldname', 'value');
});

这只是如何在现有表单中使用Dropzone.js的另一个例子。

dropzone.js:

 init: function() {

   this.on("success", function(file, responseText) {
     //alert("HELLO ?" + responseText); 
     mylittlefix(responseText);
   });

   return noop;
 },

然后，在之后的文件里

function mylittlefix(responseText) {
  $('#botofform').append('<input type="hidden" name="files[]" value="'+ responseText +'">');
}

这里假设你有一个id为#botofform的div，这样在上传时你就可以使用上传文件的名称。

注意:我的上传脚本返回theuploadedfilename.jpeg Dubblenote你还需要做一个清理脚本，检查上传目录的文件不使用，并删除他们。如果在前端未验证的形式:)

这里有另一种方法:在您的表单中添加一个div，类名为dropzone，并以编程方式实现dropzone。

HTML:

<div id="dZUpload" class="dropzone">
      <div class="dz-default dz-message"></div>
</div>

JQuery:

$(document).ready(function () {
    Dropzone.autoDiscover = false;
    $("#dZUpload").dropzone({
        url: "hn_SimpeFileUploader.ashx",
        addRemoveLinks: true,
        success: function (file, response) {
            var imgName = response;
            file.previewElement.classList.add("dz-success");
            console.log("Successfully uploaded :" + imgName);
        },
        error: function (file, response) {
            file.previewElement.classList.add("dz-error");
        }
    });
});

注意:禁用自动发现，否则Dropzone将尝试附加两次