Question

Chrome调试器显示名称为“GetPurchaseOrdersComponent”，路径显示为“/ Cost”，而Telerik网格控件发出的调用名称为“4485”，路径为“/ Cost / GetPurchaseOrders”（并且它们正在运行）。此外，我的通话类型（在Chrome的调试器中查看时）是text / html，而在工作调用中，它是application / json。我得到的错误是：“500（内部服务器错误）”。我为此调用定义了与其他调用类似的路由。这是我的代码：

$.ajax({
        url: "/Cost/GetPurchaseOrdersComponent",
        type: "GET",
        dataType: "json",
        contentType: "application/json; charset=utf-8",
        async: true,
        data: { id: 1 },
        success: function (result) {
            $("#ComponentsMultiLevelGrid").html(result);
        }
    });


[HttpGet]
public string GetPurchaseOrdersComponent(int id)
{
     return "some string";
}

更新

以下是有效呼叫的标头（此呼叫来自Telerik网格）：

Request URL:http://localhost:61751/Cost/GetSupplierCatalogs/4485?key=4485&_=1340830508447
Request Method:POST
Status Code:200 OK

**Request Headers** - view source
Accept:text/plain, */*; q=0.01
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Connection:keep-alive
Content-Length:13
Content-Type:application/x-www-form-urlencoded
Cookie:ASP.NET_SessionId=uxn1ctvzcchyrbreymcgz1vl
Host:localhost:61751
Origin:http://localhost:61751
Referer:http://localhost:61751/Transaction/4485
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5
X-Requested-With:XMLHttpRequest

**Query String Parameters** - view URL encoded
key:4485
_:1340830508447
Form Dataview URL encoded
page:1
size:5

**Response Headers** - view source
Cache-Control:private
Connection:Close
Content-Length:21
Content-Type:application/json; charset=utf-8
Date:Wed, 27 Jun 2012 20:55:28 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319
X-AspNetMvc-Version:3.0

这是调用失败的标题（这是jQuery调用）：

Request URL:http://localhost:61751/Cost/GetPurchaseOrdersComponent?id=1
Request Method:GET
Status Code:500 Internal Server Error

**Request Headers** - view source
Accept:text/plain, */*; q=0.01
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Connection:keep-alive
Content-Type:application/x-www-form-urlencoded
Cookie:ASP.NET_SessionId=uxn1ctvzcchyrbreymcgz1vl
Host:localhost:61751
Referer:http://localhost:61751/Transaction/4485
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5
X-Requested-With:XMLHttpRequest

**Query String Parameters** - view URL encoded
id:1

**Response Headers** - view source
Cache-Control:private
Connection:Close
Content-Length:10434
Content-Type:text/html; charset=utf-8
Date:Wed, 27 Jun 2012 20:55:25 GMT
Server:ASP.NET Development Server/10.0.0.0
X-AspNet-Version:4.0.30319

Answer 1

JSON请求仅适用于POST，因此您需要使用正确的谓词，并且还需要发送JSON请求，因为这是您在contentType参数中指定的内容。这是通过JSON.stringify方法实现的：

$.ajax({
    url: "/Cost/GetPurchaseOrdersComponent",
    type: "POST",
    dataType: "json",
    contentType: "application/json; charset=utf-8",
    async: true,
    data: JSON.stringify({ id: 1 }),
    success: function (result) {
        $("#ComponentsMultiLevelGrid").html(result);
    }
});

或者如果您不想使用JSON请求，请删除contentType参数：

$.ajax({
    url: "/Cost/GetPurchaseOrdersComponent",
    type: "GET",
    dataType: "json",
    async: true,
    data: { id: 1 },
    success: function (result) {
        $("#ComponentsMultiLevelGrid").html(result);
    }
});

Answer 2

这很有效。不要问我为什么。

$.ajax({
    url: '@Url.Action("GetPurchaseOrdersComponent", "Cost", new { id = ViewBag.CustomerEstimateKey })',
    type: "GET",
    dataType: "text",
    async: true,
    success: function (result) {
        $("#ComponentsMultiLevelGrid").html(result);
    }
});

jquery ajax调用MVC控制器失败

2 个答案: