asp.net - 将 JSON 对象转换为 C# 对象

Question

如何将 JSON 对象映射到 C# 对象？

  var Data = JSON.stringify({
                    FirstName: "sdfsdf",
                    LastName: "sdfsdf", Age: "sdfsdf", Descrp: "sdfsdf"
                });

例如将 Data 转换为具有相同属性的 C# 类。
我试过这个:

 var Data = JSON.stringify({
                FirstName: "sdfsdf",
                LastName: "sdfsdf", Age: "sdfsdf", Descrp: "sdfsdf"
            });
            $.ajax({
                type: "POST",
                url: "Services/CRUD.asmx/CreatePerson",
                data: Data,
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (msg) {
                    alert(msg.d);

                }
            });

但是当我用 firebug 检查时返回了这个错误:

{"Message":"Invalid web service call, missing value for parameter: \u0027PersonObj\u0027.","StackTrace":"   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 parameters)\r\n   at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData methodData, IDictionary`2 rawParams)\r\n   at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"}

Answer 1

您绝对可以这样做，但您需要确保客户端对象与您的服务器端类结构、属性名称和参数名称完全匹配。

听起来您的服务器端方法需要一个 PersonObj 参数，但您并没有在客户端以这种方式构造它。尝试这样的事情:

var Data = JSON.stringify({ 
  PersonObj: {
    FirstName: 'foo',
    LastName: 'bar',
    Age: 99,
    Descrp: 'foo person'
  }
});   

我在这里写过有关深入执行此操作的文章:http://encosia.com/using-complex-types-to-make-calling-services-less-complex/