Question

我使用Wcf Service和JS。

我通过AJAX向我的服务发送信息。

我在服务中有一个接受以下对象的函数：

  [DataContract]
    public class Business
    {
        [DataMember]
        public string Name { get; set; }
        [DataMember]
        public string Desc { get; set; }        
        [DataMember]
        public List<BusinessService> Services { get; set; }
    }

BusinessService.cs：

   [DataContract]
    public class BusinessService
    {
        [DataMember]
        public string Name { get; set; }
        [DataMember]
        public string Desc { get; set; }
        [DataMember]
        public int LongTime { get; set; }
    }

我将JS中的对象解析为JSON并将它们发送给服务。

这里发送给wcf函数的json：

"{"ManageBusiness":{"Name":"aaaaaa","Desc":"aaaaaaaaaaaa","Services":[{"Name":"aaaaaa","Desc":"aaaaaa","LongTime":30},{"Name":"aaaaaa1","Desc":"aaaaaa","LongTime":30}]}}"

除Services列表外，一切正常。

列表将wcf函数作为null。

我不知道为什么会这样，我会很感激帮助吗？

Answer 1

您无法从JSON数据中实例化List<T>。你可以做的是替换：

[DataContract]
    public class Business
    {
        [DataMember]
        public string Name { get; set; }
        [DataMember]
        public string Desc { get; set; }        
        [DataMember]
        public List<BusinessService> Services { get; set; }
    }

与

[DataContract]
    public class Business
    {
        [DataMember]
        public string Name { get; set; }
        [DataMember]
        public string Desc { get; set; }        
        [DataMember]
        public BusinessService[] Services { get; set; }
    }

即，将List<T>替换为Array of T

Answer 2

您可以使用WCF Service Trace Viewer来帮助您查看和跟踪从服务中获得的错误。

Answer 3

试试这个，

var data = "{"ManageBusiness":{"Name":"aaaaaa","Desc":"aaaaaaaaaaaa","Services":[{"Name":"aaaaaa","Desc":"aaaaaa","LongTime":30},{"Name":"aaaaaa1","Desc":"aaaaaa","LongTime":30}]}}";

在下面的ajax调用中添加

contentType: "application/json",
data: JSON.stringify({ business: data }),

以下代码接收数据

public ActionResult BusinessCall(Business business){}

Answer 4

以下我可以说明确有效。我刚试过它。对不起它在vb.net，但你应该明白了。

在服务器端：在IService1.vb中

Imports System.ServiceModel
Imports System.ServiceModel.Activation
Imports System.ServiceModel.Web

Namespace Webservices
   <ServiceContract()>
    Public Interface IService1

    <OperationContract()> _
    <WebInvoke(method:="POST", ResponseFormat:=WebMessageFormat.Json, BodyStyle:=WebMessageBodyStyle.WrappedRequest)> _
    Function test(manageBusiness As ManagedBusiness) As string

   End Interface
End Namespace

在Service1.svc.vb

中

Imports System.Runtime.Serialization
Imports System.ServiceModel.Activation
Namespace Webservices
<AspNetCompatibilityRequirements(RequirementsMode:=AspNetCompatibilityRequirementsMode.Required)>
Public Class Service1
    Implements IService1 
    Public function test(manageBusiness As ManagedBusiness) As string Implements IService1.test 
       Return "done"   
     End function    
End Class   

<CollectionDataContract()>
Public Class Services
    Inherits List(Of Service)
End Class

<DataContract()>
Public Class Service
    <DataMember()>Public Property Name As String
    <DataMember()>Public Property Desc As String
    <DataMember()>Public Property LongTime As Integer 
End Class

<DataContract()>
Public Class ManagedBusiness 
    <DataMember()>Public Property Name As String
    <DataMember()>Public Property Desc As String
    <DataMember()>Public Property Services As Services

End Class 
End NameSpace

我连接了webconfig设置。并将此jquery ajax调用放在客户端：

$("#btnTest").click(function () {
            var services = [];
            services.push({
                Name: "aaaaaa",
                Desc: "aaaaaa",
                LongTime: 30
            });
            services.push({
                Name: "aaaaaa1",
                Desc: "aaaaaa",
                LongTime: 30
            });
            var data = {};
            data.manageBusiness = {
                Name: "aaaaaa",
                Desc: "aaaaaaaaaaaa",
                Services: services
            }


            $.ajax({
                type: "POST",
                url: "http://localhost:64110/Webservices/Service1.svc/test",
                dataType: "json",
                contentType: "application/json; charset=utf-8",
                async: true,
                data: JSON.stringify(data),
                success(msg) {

                }
            });


        });

我可以确认请求的有效负载如下：

{"manageBusiness":{"Name":"aaaaaa","Desc":"aaaaaaaaaaaa","Services":[{"Name":"aaaaaa","Desc":"aaaaaa","LongTime":30},{"Name":"aaaaaa1","Desc":"aaaaaa","LongTime":30}]}}

WCF服务对所有内容进行了反序列化。我认为你缺少的是 [CollectionDataContract] 属性。

更新：我尝试删除[CollectionDataContract]属性，但它仍然有效。所以我猜测数据契约属性仅用于序列化，反序列化不需要（？）

将对象中的列表发送到Wcf服务

4 个答案: