Question

我使用Ajax调用服务器端方法，但我一直收到此错误

{＆＃34;消息＆＃34;：＆＃34;无效的Web服务调用，缺少参数值：\ u0027name \ u0027。＆＃34;，＆＃34; StackTrace＆＃34;：＆＃34; at System.Web.Script.Services.WebServiceMethodData.CallMethod（Object target，IDictionary 2 parameters)\r\n at System.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary 2参数）\ r \ n在System.Web.Script.Services.RestHandler.InvokeMethod（HttpContext context，WebServiceMethodData methodData，IDictionary`） 2 rawRarams）\ r \ n在System.Web.Script.Services.RestHandler.ExecuteWebServiceCall（HttpContext context，WebServiceMethodData methodData）＆＃34;，＆＃34; ExceptionType＆＃34;：＆＃34; System.InvalidOperationException＆＃34; }

这是客户端

$(document).ready(function () {
    $.ajax({
        url: "Server.aspx/sendEmail",
        contentType: "application/json; charset=UTF-8",
        data: JSON.stringify({ name: "foo", company: "bar", country: "foo", email: "bar", msg: "bla" }),
        dataType: "json",
        success: function (data) {
            var a = 3;
        },
        error: function (a, b) {
            var a = 43;
        }
    });
});

这是服务器端

[WebMethod]
[ScriptMethod(UseHttpGet = true)]
public static string sendEmail(string name, string company, string country, string email, string msg)
{

}

Answer 1

我发现了问题。当通过ajax使用GET函数时，你不需要发送json，因为Jquery会为你做。所以你需要删除contentType属性并使数据如下：

data: { name: "foo", company: "bar", country: "foo", email: "bar", msg: "bla" },

＆＃34;消息＆＃34;：＆＃34;无效的Web服务调用，缺少参数值：\ u0027name \ u0027

1 个答案: