jQuery的问题WEBMETHOD

Question

我读过关于这个问题的所有问题，但并没有设法解决它......

比分类：

public class Score 
{ 
    // default constructor 
    public Score() 
    { } 

    public int TraitID { get; set; } 

    public double TraitScore { get; set; } 
} 

该ASPX的WebMethod：

[WebMethod] 
    public static bool Test(List<Score> scores) 
    { 
     return true; 
    } 

jQuery代码：

  var scoresList = [{"TraitID":1,"TraitScore":2}, {"TraitID":2,"TraitScore":5}]; 

      $.ajax({ 
       type: "POST", 
       url: "Tryouts.aspx/Test", 
       data: "{'scores':" + JSON.stringify(scoresList) + "}", 
       contentType: "application/json; charset=utf-8", 
       dataType: "json", 
       success: function (response) { 
        if (response.d == true) { 
         alert("success!!!!!"); 
        } 
        else { 
         alert("problem!!!!!!!!!"); 
        } 
       }, 
       error: function() { 
        alert("ERROR"); 
       } 
      }); 

我不断收到错误：

{"Message":"Cannot convert object of type \u0027System.String\u0027 to type 
\u0027System.Collections.Generic.List`1[BusinessLogicLayer.Score]\u0027","StackTrace":" at 
System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, 
JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\r\n at 
System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type, 
JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject)\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.InvalidOperationException"} 

谢谢!!!

Answer 1

我将自定义对象的数组传递到Web方法中的列表，它工作得很好。

我在猜测由于属性名称周围的引号引起的小JSON格式问题。试着改变你的对象是：

var scoresList = [{TraitID:1, TraitScore:2}, {TraitID:2, TraitScore:5}]; 

和数据线改成这样：

data: JSON.stringify({ scores : scoresList }),  

希望帮助...

UPDATE：工作示例...

<script type="text/javascript"> 
$(function() { 

    var scoresList = [{ TraitID: 1, TraitScore: 2 }, { TraitID: 2, TraitScore: 5}]; 

    $.ajax({ type: "POST", 
     url: "Tryouts.aspx/Test", 
     data: JSON.stringify({ scores: scoresList }), 
     contentType: "application/json; charset=utf-8", 
     dataType: "json", 
     success: function (response) { 
      if (response.d == true) { 
       alert("success!!!!!"); 
      } else { 
       alert("problem!!!!!!!!!"); 
      } 
     }, 
     error: function (xhr) { 
      alert("ERROR"); 
     } 
    }); 

}); 
</script> 

下面是代码隐藏：

public class Score 
{ // default constructor  
    public Score() { } 
    public int TraitID { get; set; } 
    public double TraitScore { get; set; } 
} 

[WebMethod] 
public static bool Test(List<Score> scores) 
{ 
    return true; 
}