javascript - 如何将 Javascript 文件对象+数据发送到 MVC 6 Controller - ASP.NET 5

Question

这个 Ajax 位于一个函数内，我知道该函数中有文件和属性。没有发生任何事情，我正在拖放文件，但 Ajax 没有发生任何事情。当我将属性输出到页面时，我看到 JS 中的函数具有该文件，但它不会将其发送到 Controller 。我认为它工作不正常，当我调试索引 Controller 时，我的参数中没有文件属性。 Ajax 没有给我成功或失败警报消息。

我的最终目标是获取上传的文件内的数据，以便我可以解析它。

JavaScript

        function sendFile(file) {


        $.ajax({
            type: "POST",
            url: "HomeController/Index", // the method we are calling
            contentType: "application/json; charset=utf-8",
            data: { filename: file.name, fileType: file.type, fileSize: file.size },
            dataType: "json",
            success: function(result) {
                alert('Yay! It worked!');
                // Or if you are returning something
                alert('I returned... ' + result.WhateverIsReturning);
            },
            error: function(result) {
                alert('Oh no :(');
            }
        });

        Output(
            "<p>File information: <strong>" + file.name +
            "</strong> type: <strong>" + file.type +
            "</strong> size: <strong>" + file.size +
            "</strong> bytes</p>"
        );

    }

AJAX

            $.ajax({
            type: "POST",
            url: "HomeController/Index", // the method we are calling
            contentType: "application/json; charset=utf-8",
            data: { filename: file.name, fileType: file.type, fileSize: file.size },
            dataType: "json",
            success: function(result) {
                alert('Yay! It worked!');
                // Or if you are returning something
                alert('I returned... ' + result.WhateverIsReturning);
            },
            error: function(result) {
                alert('Oh no :(');
            }
        });

C#

        public IActionResult Index(string fileName, string fileType, int fileSize)
    {
        ViewBag.Environments = _configHelper.GetEnvironments();
        var model = new HomeViewModel { Environment = "DEV" };
        return View(model);
    }

CSHTML

            <div class="form-group col-md-12">
            <label>Company Ids:</label>
            <div id="filedrag"><textarea class="form-control" rows="5" id="textAreaCompanyIDs" placeholder="Drop Files Here"></textarea>
            </div>
        </div>

Answer 1

要在 Controller 中获取文件，您必须发送完整文件。

尝试如下:

AJAX:

 $.ajax({
            type: "POST",
            url: "HomeController/Index", // the method we are calling
            contentType: "application/json; charset=utf-8",
            data: { file: file, fileType: file.type, fileSize: file.size },
            dataType: "json",
            success: function(result) {
                alert('Yay! It worked!');
                // Or if you are returning something
                alert('I returned... ' + result.WhateverIsReturning);
            },
            error: function(result) {
                alert('Oh no :(');
            }
        });

Controller :

   public IActionResult Index(HttpPostedFileBase file, string fileType, int fileSize)
    {
        ViewBag.Environments = _configHelper.GetEnvironments();
        var model = new HomeViewModel { Environment = "DEV" };
        return View(model);
    }