jquery - 如何使用 jquery Ajax 将数据发布到 WCF 服务？

Question

我在使用 JQUERY AJAX 使用 WCF 服务时遇到问题。我知道这是跨域问题，并且已经阅读了很多有关它的解决方案。但没有一个对我有用。以下是所有相关代码。谁能帮帮我吗？

谢谢

 [OperationContract]
        [WebInvoke(Method = "POST",BodyStyle=WebMessageBodyStyle.Bare,
            RequestFormat = WebMessageFormat.Json,
           ResponseFormat = WebMessageFormat.Json)]
        [return: MessageParameter(Name = "result")]


        public ServiceSearchResponse GetSearchResults(ServiceSearchParams sParams)
        {
            /// search function
        }

JQUERY:

        $.ajax({
            type: 'POST',
            url: "http://myserviceurl.com/GetSearchResults",
            data: p,
            contentType: "application/json; charset=utf-8",
            dataType: 'json',
            crossDomain: true,
            success: function (data) {

                alert(data);
            },
            failure: function (response) {
                alert('failed');
            },
            error: function (response) {
                alert(JSON.stringify(response));
            }
        });

网络配置:

  <system.webServer>        
        <httpProtocol>
          <customHeaders>
            <add name="Access-Control-Allow-Origin" value="*" />
            <add name="Access-Control-Allow-Headers" value="Content-Type" />
          </customHeaders>
        </httpProtocol>
      </system.webServer>

<system.serviceModel>
    <protocolMapping>
      <add scheme="http" binding="webHttpBinding" bindingConfiguration="" />
    </protocolMapping>
    <behaviors>
      <serviceBehaviors>
        <behavior name="DefaultServiceBehavior">
          <!--Added DefaultServiceBehavior referenced at service tag above-->
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>       
        <behavior name="myserives.services.AppServicesAspNetAjaxBehavior">

          <webHttp />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
    <services>  
      <service name="mypackage.services.MyServices">
        <endpoint address="" behaviorConfiguration="myserives.services.AppServicesAspNetAjaxBehavior" binding="webHttpBinding"
           bindingConfiguration="LargeSizeMessages" contract="myContractName"  />
      </service>
    </services>
    <bindings>
      <webHttpBinding>
        <binding name="LargeSizeMessages" maxBufferSize="2147483647"
                 maxBufferPoolSize="2147483647"
                 maxReceivedMessageSize="2147483647" crossDomainScriptAccessEnabled="true">      
          <security mode="None" />
        </binding>
      </webHttpBinding>

    </bindings>

  </system.serviceModel>

它是这样的: http://screencast.com/t/b7tsqld6

查看错误: http://screencast.com/t/pWQNAlmMYS3

发布数据中没有任何内容。虽然我正在发布数据。

--- 更新

查看我的 Global.asax ..我在这里做错了什么:

 protected void Application_BeginRequest(object sender, EventArgs e)
        {

            HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
            HttpContext.Current.Response.Cache.SetNoStore();

            EnableCrossDmainAjaxCall();
        }

        private void EnableCrossDmainAjaxCall()
        {
            HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin",
                          "*");

            if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
            {
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods",
                              "GET, POST");
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Credentials",
                             "true");
                HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers",
                              "Content-Type, Accept");
                HttpContext.Current.Response.AddHeader("Access-Control-Max-Age",
                              "1728000");
                HttpContext.Current.Response.End();
            }
        }

Answer 1

这是一段工作代码。

界面

[ServiceContract]
    public interface IDataService
    {
        [OperationContract]
        [WebInvoke(Method = "POST", ResponseFormat = WebMessageFormat.Json, RequestFormat = WebMessageFormat.Json,BodyStyle=WebMessageBodyStyle.WrappedResponse)]
        List<RequestData> GetUser(RequestData data);

        [OperationContract]
        [WebGet(ResponseFormat = WebMessageFormat.Json, UriTemplate = "UsersList/{id}",RequestFormat=WebMessageFormat.Json,BodyStyle=WebMessageBodyStyle.WrappedResponse)]
        RequestData UsersList(string id);



    }

类实现接口(interface)

public class DataService : IDataService
    {

        public List<RequestData> GetUser(RequestData data)
        {
            List<RequestData> list = new List<RequestData>();
            if (data.Name.ToUpper() == "MAIRAJ")
            {
                list.Add(new RequestData
                {
                    Name = "Mairaj",
                    Age = 25,
                    Address = "Test Address"
                });
                list.Add(new RequestData
                {
                    Name = "Ahmad",
                    Age = 25,
                    Address = "Test Address"
                });

            }
            return list;
        }
        public RequestData UsersList(string userId)
        {
                return new RequestData
                {
                    Name = "Mairaj",
                    Age = 25,
                    Address = "Test Address"
                };
         }

    }

自定义类

由于我将此类的对象作为参数传递给方法并返回该对象，因此我正在使用它。您可能不需要它。

[DataContract]
    public class RequestData
    {
        [DataMember]
        public string Name { get; set; }
        [DataMember]
        public int Age { get; set; }
        [DataMember]
        public string Address { get; set; }

    }

Web.Config

<configuration>
    <configSections>
    </configSections>
    <system.web>
      <compilation debug="true" targetFramework="4.5" />
      <httpRuntime targetFramework="4.5" />
    </system.web>

  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ServiceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
      <endpointBehaviors>
        <behavior name="EndpBehavior">
          <webHttp/>
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="ServiceBehavior" name="WCFWebApp.DataService">
        <endpoint address="" binding="webHttpBinding" contract="WCFWebApp.IDataService" behaviorConfiguration="EndpBehavior"/>
      </service>
    </services>
  </system.serviceModel>
</configuration>

这就是你如何调用它

var Data = {
        Name: "Mairaj",
        Age: 20,
        Address: "Test Address"
        //userId:1
    };
    $.ajax({
        type: "POST",
        url: "/DataService.svc/GetUser",
        dataType: "JSON",
        data: JSON.stringify(Data),
        contentType: "application/json; charset=utf-8",
        success: function (data) {
            alert("Data is " + data);
        },
        error: function () {
        }
    });

您需要更改 web.config 中服务类的名称和 jquery 代码中调用它的 url。