“应从命名空间''结束元素'jsonCalendarItems'。从命名空间''找到元素'item'答案

【问题标题】："End element 'jsonCalendarItems' from namespace '' expected. Found element 'item' from namespace ''“应从命名空间''结束元素'jsonCalendarItems'。从命名空间''找到元素'item'
【发布时间】：2011-06-08 10:42:37
【问题描述】：

我遇到了一个奇怪的错误，我无法找出问题所在。我正在以 json 格式向我的 wcf 服务发送一个对象数组。

   var calendarItemsString = JSON.stringify(calendarItems);
            $.ajax({
                    cache: false,
                    async: true,
                    url: 'webService.svc/SaveCalendarItems',
                type: "POST",
                dataType: "json",
                contentType: "application/json; charset=utf-8",
                data: '{"jsonCalendarItems": ' + calendarItemsString + '}',
                success: function () {
                    alert('Save was performed.');
                },
                error: onPageError
               });

以下是正在发送的帖子，它是有效的 JSON。

{
"jsonCalendarItems": [
    {
        "ImageId": 119,
        "Image": {
            "Id": 119,
            "Big": "Apple.jpg",
            "SmallThumbnail": "Apple.jpg",
            "Thumbnail": "Apple.jpg",
            "Full": "Apple.jpg",
            "Name": "apple"
        },
        "YearMonth": "2011-01-01T00:00:00.000Z"
    },
    {
        "ImageId": 366,
        "Image": {
            "Id": 366,
            "Big": "BabyWateringCan.jpg",
            "SmallThumbnail": "BabyWateringCan.jpg",
            "Thumbnail": "BabyWateringCan.jpg",
            "Full": "BabyWateringCan.jpg",
            "Name": "BabyWateringCan"
        },
        "YearMonth": "2011-02-01T00:00:00.000Z"
    },
    {
        "ImageId": 368,
        "Image": {
            "Id": 368,
            "Big": "BarBell.jpg",
            "SmallThumbnail": "BarBell.jpg",
            "Thumbnail": "BarBell.jpg",
            "Full": "BarBell.jpg",
            "Name": "BarBell"
        },
        "YearMonth": "2011-03-01T00:00:00.000Z"
    },
    {
        "ImageId": 66,
        "Image": {
            "Id": 66,
            "Big": "Bauble.jpg",
            "SmallThumbnail": "Bauble.jpg",
            "Thumbnail": "Bauble.jpg",
            "Full": "Bauble.jpg",
            "Name": "bauble"
        },
        "YearMonth": "2011-03-31T23:00:00.000Z"
    },
    {
        "ImageId": 116,
        "Image": {
            "Id": 116,
            "Big": "Coffee Cup.jpg",
            "SmallThumbnail": "Coffee Cup.jpg",
            "Thumbnail": "Coffee Cup.jpg",
            "Full": "Coffee Cup.jpg",
            "Name": "coffee cup"
        },
        "YearMonth": "2011-04-30T23:00:00.000Z"
    },
    {
        "ImageId": 115,
        "Image": {
            "Id": 115,
            "Big": "Clouds.jpg",
            "SmallThumbnail": "Clouds.jpg",
            "Thumbnail": "Clouds.jpg",
            "Full": "Clouds.jpg",
            "Name": "clouds"
        },
        "YearMonth": "2011-05-31T23:00:00.000Z"
    },
    {
        "ImageId": 73,
        "Image": {
            "Id": 73,
            "Big": "Champagne.jpg",
            "SmallThumbnail": "Champagne.jpg",
            "Thumbnail": "Champagne.jpg",
            "Full": "Champagne.jpg",
            "Name": "champagne"
        },
        "YearMonth": "2011-06-30T23:00:00.000Z"
    },
    {
        "ImageId": 69,
        "Image": {
            "Id": 69,
            "Big": "Bubbles.jpg",
            "SmallThumbnail": "Bubbles.jpg",
            "Thumbnail": "Bubbles.jpg",
            "Full": "Bubbles.jpg",
            "Name": "bubbles"
        },
        "YearMonth": "2011-07-31T23:00:00.000Z"
    },
    {
        "ImageId": 297,
        "Image": {
            "Id": 297,
            "Big": "DivingBoard.jpg",
            "SmallThumbnail": "DivingBoard.jpg",
            "Thumbnail": "DivingBoard.jpg",
            "Full": "DivingBoard.jpg",
            "Name": "DivingBoard"
        },
        "YearMonth": "2011-08-31T23:00:00.000Z"
    },
    {
        "ImageId": 298,
        "Image": {
            "Id": 298,
            "Big": "Duckweed.jpg",
            "SmallThumbnail": "Duckweed.jpg",
            "Thumbnail": "Duckweed.jpg",
            "Full": "Duckweed.jpg",
            "Name": "Duckweed"
        },
        "YearMonth": "2011-09-30T23:00:00.000Z"
    },
    {
        "ImageId": 78,
        "Image": {
            "Id": 78,
            "Big": "Easter Egg Card.jpg",
            "SmallThumbnail": "Easter Egg Card.jpg",
            "Thumbnail": "Easter Egg Card.jpg",
            "Full": "Easter Egg Card.jpg",
            "Name": "easter egg card"
        },
        "YearMonth": "2011-11-01T00:00:00.000Z"
    },
    {
        "ImageId": 106,
        "Image": {
            "Id": 106,
            "Big": "Fireworks.jpg",
            "SmallThumbnail": "Fireworks.jpg",
            "Thumbnail": "Fireworks.jpg",
            "Full": "Fireworks.jpg",
            "Name": "fireworks"
        },
        "YearMonth": "2011-12-01T00:00:00.000Z"
    }
] }

这里是wcf方法

    <OperationContract(), WebInvoke(Method:="POST", BodyStyle:=WebMessageBodyStyle.WrappedRequest, RequestFormat:=WebMessageFormat.Json), WebMethod(EnableSession:=True)>
Public Sub SaveCalendarItems(ByVal jsonCalendarItems As String)
    Dim _calenderItems As List(Of CalenderItem) = HttpContext.Current.Session("calenderItems")
    _calenderItems = Newtonsoft.Json.JsonConvert.DeserializeObject(Of List(Of CalenderItem))(jsonCalendarItems)
    HttpContext.Current.Session("calenderItems") = _calenderItems
End Sub

最后是错误信息

{
"ExceptionDetail": {
    "HelpLink": null,
    "InnerException": {
        "HelpLink": null,
        "InnerException": {
            "HelpLink": null,
            "InnerException": null,
            "Message": "End element 'jsonCalendarItems' from namespace '' expected. Found element 'item' from namespace ''.",
            "StackTrace": "   at System.Xml.XmlExceptionHelper.ThrowXmlException(XmlDictionaryReader reader, String res, String arg1, String arg2, String arg3)\r\n   at System.Xml.XmlExceptionHelper.ThrowEndElementExpected(XmlDictionaryReader reader, String localName, String ns)\r\n   at System.Xml.XmlBaseReader.ReadEndElement()\r\n   at System.Xml.XmlBaseReader.ReadElementContentAsString()\r\n   at System.Runtime.Serialization.XmlReaderDelegator.ReadElementContentAsString()\r\n   at System.Runtime.Serialization.Json.JsonStringDataContract.ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)\r\n   at System.Runtime.Serialization.Json.JsonDataContract.ReadJsonValue(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)\r\n   at System.Runtime.Serialization.Json.DataContractJsonSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName)\r\n   at System.Runtime.Serialization.XmlObjectSerializer.InternalReadObject(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)\r\n   at System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)",
            "Type": "System.Xml.XmlException"
        },
        "Message": "There was an error deserializing the object of type System.String. End element 'jsonCalendarItems' from namespace '' expected. Found element 'item' from namespace ''.",
        "StackTrace": "   at System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName, DataContractResolver dataContractResolver)\r\n   at System.Runtime.Serialization.Json.DataContractJsonSerializer.ReadObject(XmlDictionaryReader reader, Boolean verifyObjectName)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameterPart(XmlDictionaryReader reader, PartInfo part)",
        "Type": "System.Runtime.Serialization.SerializationException"
    },
    "Message": "The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter :jsonCalendarItems. The InnerException message was 'There was an error deserializing the object of type System.String. End element 'jsonCalendarItems' from namespace '' expected. Found element 'item' from namespace ''.'.  Please see InnerException for more details.",
    "StackTrace": "   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameterPart(XmlDictionaryReader reader, PartInfo part)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameter(XmlDictionaryReader reader, PartInfo part)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameters(XmlDictionaryReader reader, PartInfo[] parts, Object[] parameters, PartInfo returnInfo, Object& returnValue)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeBodyCore(XmlDictionaryReader reader, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeBody(XmlDictionaryReader reader, MessageVersion version, String action, MessageDescription messageDescription, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.DemultiplexingDispatchMessageFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.UriTemplateDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.CompositeDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)",
    "Type": "System.ServiceModel.Dispatcher.NetDispatcherFaultException"
},
"ExceptionType": "System.ServiceModel.Dispatcher.NetDispatcherFaultException",
"Message": "The formatter threw an exception while trying to deserialize the message: There was an error while trying to deserialize parameter :jsonCalendarItems. The InnerException message was 'There was an error deserializing the object of type System.String. End element 'jsonCalendarItems' from namespace '' expected. Found element 'item' from namespace ''.'.  Please see InnerException for more details.",
"StackTrace": "   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameterPart(XmlDictionaryReader reader, PartInfo part)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameter(XmlDictionaryReader reader, PartInfo part)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeParameters(XmlDictionaryReader reader, PartInfo[] parts, Object[] parameters, PartInfo returnInfo, Object& returnValue)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeBodyCore(XmlDictionaryReader reader, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.DataContractJsonSerializerOperationFormatter.DeserializeBody(XmlDictionaryReader reader, MessageVersion version, String action, MessageDescription messageDescription, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)\r\n   at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.DemultiplexingDispatchMessageFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.UriTemplateDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.CompositeDispatchFormatter.DeserializeRequest(Message message, Object[] parameters)\r\n   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc)\r\n   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)"

}

有人知道这个错误是什么意思吗？

更新：

服务模式

 <system.serviceModel>
<behaviors>
  <endpointBehaviors>
    <behavior name="PhotoCreator.HelloWorldServiceAspNetAjaxBehavior">
      <enableWebScript />
    </behavior>
  </endpointBehaviors>
  <serviceBehaviors>
    <behavior name="PhotoCreator.HelloWorldServiceAspNetAjaxBehavior">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
    <behavior name="">
      <serviceMetadata httpGetEnabled="true" />
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true"
  multipleSiteBindingsEnabled="true" />
<services>
  <service behaviorConfiguration="PhotoCreator.HelloWorldServiceAspNetAjaxBehavior"
    name="PhotoCreator.WebService">
    <endpoint address="" behaviorConfiguration="PhotoCreator.HelloWorldServiceAspNetAjaxBehavior"
      binding="webHttpBinding" bindingConfiguration="LargeString"
      contract="PhotoCreator.WebService" />
    <endpoint address="mex" binding="mexHttpBinding" contract="PhotoCreator.WebService" />
  </service>
</services>
<bindings>
  <webHttpBinding>
    <binding name="LargeString" maxReceivedMessageSize="1000000">
      <readerQuotas maxStringContentLength="16000" />
      <security mode="None" />
    </binding>
  </webHttpBinding>
  <wsHttpBinding>
    <binding name="mexBinding" maxReceivedMessageSize="5000000">
      <security mode="None" />
    </binding>
  </wsHttpBinding>
</bindings>

【问题讨论】：

将BodyStyle 参数删除到WebInvoke 属性时会发生什么？只是初步猜测。
有没有机会包含 web.config 的 serviceModel 部分？
上面添加的ServiceModel

标签： jquery asp.net ajax wcf json

【解决方案1】：

问题是您的操作需要一个 String 参数（即 JSON 字符串），但 jsonCalendarItems 的值是一个数组。您可以创建一个类来表示数组项并将参数类型更改为该类的数组，也可以将 JSON 数组转换为字符串（可以通过调用 JSON.stringify 再次在日历项字符串上）

【讨论】：