Ajax请求使用MVC和$ .ajax调用与POST一起返回HTTP错误500? [英] Ajax Request returns HTTP error 500, using MVC and $.ajax call with POST?

问题描述

我已经看到了几个与此相关的主题，并且已经尝试了所有答案( ASP.NET MVC JsonResult返回500 )

I've seen several threads about this, and I've tried all the answers (ASP.NET MVC JsonResult return 500)

我的ajax请求重新返回500 Internal Error.如果我进行调试，我什至无法采取行动.

My ajax request is re-turning a 500 Internal Error. If I debug I never even get to my action.

这是我的ajax调用:

Here is my ajax call:

$.ajax({
                    url: '@Url.Action("UpdateSortOrder", "FormItems")',
                    data: { itemToUpdateId: item.attr("id"), newParentItemId: parentItemId, newPreviousItemId: previousItemId },
                    type: 'POST',
                    success: function (data) {
                        console.log(data);
                    },
                    error: function (xhr, status, exception) {
                        console.log("Error: " + exception + ", Status: " + status);
                    }
                });

我的动作

[HttpPost]
    public ActionResult UpdateSortOrder(Guid itemToUpdateId, Guid newParentItemId, Guid newPreviousItemId)
    {
        FormItem updatedItem = _formItemService.GetOne(x => x.Id == itemToUpdateId);

        return Json(updatedItem, JsonRequestBehavior.DenyGet);
    }

使用chrome控制台，这些是回复中的响应标头:

Using chrome console, these are the response headers from the reply:

HTTP/1.1 500内部服务器错误 缓存控制:私有 内容类型:text/html;字符集= utf-8 伺服器:Microsoft-IIS/7.5 X-AspNetMvc版本:3.0 X-AspNet版本:4.0.30319 X-Powered-by:ASP.NET 日期:2012年12月18日，星期二21:53:41 GMT 内容长度:17041

HTTP/1.1 500 Internal Server Error Cache-Control: private Content-Type: text/html; charset=utf-8 Server: Microsoft-IIS/7.5 X-AspNetMvc-Version: 3.0 X-AspNet-Version: 4.0.30319 X-Powered-By: ASP.NET Date: Tue, 18 Dec 2012 21:53:41 GMT Content-Length: 17041

服务器日志未显示任何子状态代码.知道我在这里做错了吗?我更喜欢使用POST而不是GET.

Server logs show no substatus codes. Any idea what I am doing wrong here? I've prefer to use POST instead of GET.

表单数据显示为:

itemToUpdateId:18ac5399-342e-4a39-9da1-3281a89501df

itemToUpdateId:18ac5399-342e-4a39-9da1-3281a89501df

newParentItemId:null

newParentItemId:null

newPreviousItemId:null

newPreviousItemId:null

那是正确的.

我已经尝试将contentType设置为application/json和Traditional = true，如以下问题所示:

I've tried setting the contentType to application/json and traditional = true like in this question: Sending ajax post to mvc with "application/json; charset=utf-8" returns error 500 from vs web developer server

相同的错误.

推荐答案

好了，我能够弄清楚问题出在哪里，我的AJAX语法甚至操作都没有错.只是我返回的对象包含一个循环引用.通过单击网络"标签下的POST请求，然后查看预览"标签，我可以看到chrome控制台中的实际错误.这显示了实际的错误消息.

Well I was able to figure out what the problem was, there was nothing wrong with my AJAX syntax, or even the action. It was just that my returned object contained a circular reference. I was able to see the actual error in chrome console by clicking on the POST request under Network tab, then viewing the preview tab. This displayed the actual error message.

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