Question

我在向.NET Web服务提交复杂的JSON对象时遇到问题。

Ajax JavaScript代码：

$.ajax({
    type: "POST",
    url: WEBSERVICE_ADMINISTRATIO_URL + "RecieveData",

    data: JSON.stringify({data: _data}), // _data is the Javascipt object {}
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (data) {
        alert(data);
    },
    failure: function (errMsg) {
        alert(errMsg);
    },
    error: function (jqXHR, textStatus, errorThrow) {
        alert(textStatus);
    }
});

.NET webservice

 [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public string RecieveData(string data)
    {

        return "";
    }

尝试从客户端向Web服务提交数据时，我收到内部服务器错误500 。

我有其他webservice函数只返回数据，它们工作正常。我在web.config中给出了GET和POST权限。

这是详细的错误：

"{"Message":"No parameterless constructor defined for type of 
 \u0027System.String\u0027.","StackTrace":"   at 
system.Web.Script.Serialization.ObjectConverter.ConvertDictionaryToObject(IDictionary`2 dictionary, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object\u0026 convertedObject)\r\n   at 
System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object\u0026 convertedObject)\r\n   at 
System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object\u0026 convertedObject)\r\n   at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToType(Object o, Type type, JavaScriptSerializer serializer)\r\n   at System.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary`2 rawParams)\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.MissingMethodException"}"

感谢。

Answer 1

谢谢大家的支持。我能够通过将参数数据类型从字符串更改为Object来解决此问题。

 public string RecieveData(Object data)
{

    return "";
}

将JSON对象发送到.NET Web服务时出现内部服务器错误

1 个答案: