使用$ .ajax将XML发布到MVC Controller方法 [英] Using $.ajax to POST XML to MVC Controller method

问题描述

我有一个像这样的简单控制器功能:

I have a simple controller function like this:

<HttpPost>
Function SaveXML(payload As String) As Boolean
    If payload IsNot Nothing AndAlso payload.Length > 0 Then
        Return True
    Else
        Return False
    End If
End Function

我是这样从JavaScript调用的:

Which I'm calling from JavaScript like this:

function SaveXML() {

    var payload = '<?xml version="1.0" encoding="utf-8"?><data>XML_GOES_HERE</data>';

    // Calls controller correctly but data is null
    $.ajax({
        url: "/Data/SaveXML/",
        type: "POST",
        processData: false,
        contentType: "text/xml",
        data: payload
    })
    .done(function () { alert('Application saved.'); })
    .fail(function () { alert('Application failed to save.'); });

}

我将 JQuery文档上的示例用作基础，并提供一些建议来自此处，此处.我已经尝试过使用processData: false和不使用processData: false的情况，这没有什么区别.

I'm using the example on the JQuery documentation as a base with some advice from here, here, and here. I've tried it with and without processData: false and it makes no difference.

当调用Controller方法时，有效负载为null. 如果我使用一些非常相似的代码发布一个简单的字符串，那么一切效果很好.通过$.ajax将XML发布到Controller到底需要做什么?问题出在JavaScript还是Controller端?

When the call comes in to the Controller method the payload is null. If I post a simple string using some very similar code everything works fine. What precisely needs to be done in order to post XML to a Controller via $.ajax? Is it at the JavaScript or Controller end that the problem lies?

推荐答案

我最终设法找到了一些提示，最终得到了以下代码:

I eventually managed to find some hints on this and ended up with the following code:

$.ajax({
    url: "/Data/SaveXML/",
    type: "POST",
    processData: false,
    contentType: "application/json; charset=utf-8",
    data: JSON.stringify({ payload: payload })
})
.done(function () { alert('Application saved.'); })
.fail(function () { alert('Application failed to save.'); });

关键区别在于，将contentType设置为application/json，将数据转换为对象，然后通过JSON.stringify方法运行该对象，以确保不适合可以发送而不会失败.

The crucial differences are that the contentType is set to application/json, the data is turned into an object which is then run through the JSON.stringify method to make sure that the various characters that are unsuitable for a querystring can be sent without failing.

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