MVC 应用程序中的 Ajax Post 参数始终为空 [英] Ajax Post Parameter is Always Null in MVC app

问题描述

我有一个可在测试应用中使用的简单帖子

I have a simple post that works in a test app

控制器代码

public ActionResult Delete(string Id)
{
    ... delete record ...
}

JavaScript

function delAnnouncement(id) {
    $.ajax({
        type: "POST",
        url: "@Url.Action("Delete", "Announcements")",
        contentType: "application/json; charset=utf-8",
        data: JSON.stringify({ "Id": "03d23684-098a-4ae8-8fa2-7d9ce70d63ef" }), // Hard coded for testing
        success: function (data) {
            $("#AnnouncementsPH").replaceWith(data);
        }
    });        
}

我创建了一个简单的测试应用程序并且可以在那里运行.

I have created a simple test application and it works there.

我正在寻找有关现有应用程序中可能存在的总是导致传递的 id 为空的内容的任何想法.

I am looking for any ideas as to what may exist in the existing application that would always cause the id passed to be null.

我尝试过的事情:
两个应用程序之间的路线信息相同.
它们都是安全的 https 网站.
现有网站上的其他表格按预期工作.这是唯一使用带有参数的 javascript 帖子的地方.它只是列出任何系统公告的新视图.
据我所知，HTML 是有效的.
Fiddler 显示正在发送数据.
我试图在 Id 中简单地硬编码以通过.

Things I have tried:
Route Info is the same between the two applications.
They are both secure https websites.
Other forms on the existing website work as expected. This is the only place a javascript post with a parameter is used. It is just the new view that lists any system announcements.
As far as I can tell the HTML is valid.
Fiddler show the data is being sent.
I have tried to simply hard code in the Id to pass.

我不知道是什么导致 Post 无法工作.

I have no idea what could be causing the Post not to work.

感谢您的建议

编辑 1:这里是提琴手的原始帖子

Edit 1: here is the fiddler Raw post

POST https://localhost:44300/Announcements/Delete HTTP/1.1
Host: localhost:44300
Connection: keep-alive
Content-Length: 39
Accept: */*
Origin: https://localhost:44300
X-Requested-With: XMLHttpRequest
Content-TypeOfNotification: application/json; charset=utf-8
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36
Content-Type: text/plain;charset=UTF-8
Referer: https://localhost:44300/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Cookie: jetbrains.charisma.main.security.PRINCIPAL=NmI4YmFhZTExMThjZDZkZjNmZTBhMDNiZWM4NmY3MDYzZWNiMWE3M2ZmZDM5ODMwYjViMjczN2ZkZmU3YmZlZTpyb290; TCSESSIONID=233EBE63123BA35468235F441F54D7E4; ASP.NET_SessionId=ycnx1ejeyahzipwduux2quqz; __RequestVerificationToken=FnOKGFfBZKEBX4E0KBoV9133e5KK3h9Pd_OjDzNPjv7ifMTMk5uHUPmT621hOQFyOCwW5IhdewKLPDMs2_9jY2vVwrHLYOU9f0F86mN-NoQ1; .AspNet.ApplicationCookie=V8ZnbAx_2_H1Wx946VLcQ235XplzC-uvKdw4CP7Sm8ZVnJu9pG63EuzC0ptOZZNBvzZkRjB0RJS25Pn1WHOzeQSrqoWl87keqRDS6_vMwZ9L6PgKU0rJz7OhD7eKps8l3tzR097zI5WbU_chUZFKLLw1c__rfN3Fy6BbHC1qNtgx0C86AShhG5EsNiruYqJZn-Uj7Z2h75YcZctCFniMyuzD-9RetcMjkN3_PbAJg-_urfntG9NwsMEQdBf1b3K9H3GP_wUYRhnbQdNZpuAkAEa6bVfJiHrnKFhnhLkP8BAfocbMKES1wQKbXBfcNn62cEKUu3On3lHNCNN4zEvOhxF1aDaBk-yghOtvtNkROeFTKMQFD0U-XXAf-RKm0Nwgp1Tb2Ip2U42vshDRNGXQSkOojisVUxiPmkrxDtckNycQd0br1cFSqxfeXyg3cg_vKUP1VMBQcBQxZO6MVLSCDdcpANyoE43IoLp3BHgURJZP88vF18JfVV646XGOZ3QU

Id=03d23684-098a-4ae8-8fa2-7d9ce70d63ef

如您所见，Id 已发布到控制器，只是未解析并提供给方法中的参数.

As you can see the Id is posted to the controller, just not parsed and supplied to the parameter in the method.

推荐答案

您可以附加如下参数:

var targeturl = '@Url.Action("Test", "Controller")?id=' + ID;

$.ajax({
    url: targeturl,
    type: "GET",
    success: function(data) { },
    error: function (data) { }
});

或者你可以直接使用 jQuery ajax 数据参数:

Or you may use the jQuery ajax data parameter directly:

$.ajax({
  type: "POST",
  url: '@Url.Action("Test", "Controller")',
  data: { id: "your-id" }
})
  .done(function( msg ) {
    alert( "Data Saved: " + msg );
  });

参考:http://api.jquery.com/jquery.ajax/

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