----------根據其他網友總結

1.在契約接口上添加：[WebInvoke(RequestFormat=WebMessageFormat.Json,ResponseFormat=WebMessageFormat.Json,BodyStyle=WebMessageBodyStyle.WrappedRequest)]

2.在實現契約的的服務上添加標記:[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

3.配置文件:

<system.serviceModel>

???????? ? <services >

?????????????????? ? <service name="WebApplication1.guo" >

???????? ??????????? <endpoint address="" behaviorConfiguration="DiggServiceBehavior"? binding="webHttpBinding" contract="WebApplication1.Iguo" />

?????????????????? ? </service>

???????? ? </services>

??? <behaviors>

????? <serviceBehaviors>

??????? <behavior name="AllenBehavior">

????????? <serviceMetadata httpGetEnabled="true" />

??????? ??<serviceDebug includeExceptionDetailInFaults="false" />

?????????????????? </behavior>

????? </serviceBehaviors>

????? <endpointBehaviors>

??????????????? <behavior name="DiggServiceBehavior">

???????? ??????????? <enableWebScript/>

???????? ??????? </behavior>

????? </endpointBehaviors>

??? </behaviors>

??? <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />

? </system.serviceModel>

4.調用：

<script type="text/javascript">

??????? function guo() {

??????????? $.ajax({

??????????????? url: "guo.svc/Show",

??????????????? type: 'post',

??????????????? contentType: 'text/json',

??????????????? data: '{"str":"guozefeng"}',

??????????????? success: function (data) { alert(data.d); },

??????????????? error: function (data) { alert("error"); }

????????????? });

??????? }

??? </script>

-------需要注意的：

ry調用WCF的要點：

?

　　1. [WebInvoke(RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.WrappedRequest)]

?

　　2. [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

?

　　3.? binding="webHttpBinding"

?

　　4. <enableWebScript/>

?

　　5.? contentType: 'text/json'

jquery調用wcf案例