Javascript 使用jQuery调用WCF服务

我有两个项目，我需要从中调用WCF服务。 我在从其中一个呼叫服务时遇到问题。 因此，我做了一个简单的服务，它在两个项目中都是相同的，叫做Test1。 SVC、ISVC和Web.Config文件是相同的。 任何其他的想法都可能影响，并且是为什么一个项目正在工作文件而另一个返回错误请求的原因。 我正在Visual studio 2012中工作。 以下是我的代码：

SVC文件：

namespace Proj1.Web
{
    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class Proj1SVC : IProj1SVC
    {
        public string Test1()
        {
            return "Project 1";
        }
    }
}

ISVC文件：

namespace Proj1.Web
{
    [ServiceContract]
    public interface IProj1SVC
    {
        [OperationContract]
        string Test1();
    }
}

Web.Config文件：

<?xml version="1.0"?>

<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
    <connectionStrings>
        <add name="Proj1dbConnectionString" connectionString="Data Source=Proj1Comp\SQLEXPRESS;Initial Catalog=Proj1dbKK;Integrated Security=True"
            providerName="System.Data.SqlClient" />
    </connectionStrings>
    <system.web>
        <roleManager enabled="true"/>
        <compilation debug="true" targetFramework="4.0">
        </compilation>
        <!--
            The <authentication> section enables configuration 
            of the security authentication mode used by 
            ASP.NET to identify an incoming user. 
        -->
        <!--        <authentication mode="Windows"/> -->
        <authentication mode="Forms">
            <!-- The name, protection, and path attributes must match 
           exactly in each Web.config file. -->
            <forms loginUrl="login.aspx" name=".ASPXFORMSAUTH" protection="All" path="/" domain="kk.Proj1.com" timeout="600"/>
        </authentication>
        <!-- Validation and decryption keys must exactly match and cannot
         be set to "AutoGenerate". The validation and decryption
         algorithms must also be the same. -->
        <machineKey validationKey="SomeValidationKeyInHex" decryptionKey="SomeDecryptionKeyInHex" validation="SAA1"/>
        <authorization>
            <allow roles="administrators"/>
            <allow users="?" />
        </authorization>
        <!--
            The <customErrors> section enables configuration 
            of what to do if/when an unhandled error occurs 
            during the execution of a request. Specifically, 
            it enables developers to configure html error pages 
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
        <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>
    </system.web>

    <!-- Added for server side authentication data to be available in the WCF service -->
    <!-- STX -->
    <system.web.extensions>
        <scripting>
            <webServices>
                <authenticationService enabled="true" requireSSL="false"/>
            </webServices>
        </scripting>
    </system.web.extensions>
    <!-- ETX -->

    <system.serviceModel>
        <behaviors>
            <serviceBehaviors>
                <behavior name="">
                    <serviceMetadata httpGetEnabled="true" />
                    <serviceDebug includeExceptionDetailInFaults="true" />
                </behavior>
            </serviceBehaviors>
        </behaviors>

        <serviceHostingEnvironment multipleSiteBindingsEnabled="true" aspNetCompatibilityEnabled="true"/>
        <diagnostics>
        <messageLogging
             logEntireMessage="true"
             logMalformedMessages="false"
             logMessagesAtServiceLevel="true"
             logMessagesAtTransportLevel="false"
             maxMessagesToLog="3000"
             maxSizeOfMessageToLog="2000"/>
      </diagnostics>
    </system.serviceModel>
</configuration>

---

您需要在服务契约文件中为每个方法或操作指定操作级别的属性。要做到这一点，请使用WebInvoke装饰该方法，它将服务操作标记为响应HTTP请求而不是GET的操作。因此，合同文件中的操作级别代码如下：

[OperationContract]
[WebInvoke(Method = "POST", 
 BodyStyle = WebMessageBodyStyle.Wrapped,
 ResponseFormat = WebMessageFormat.Json)]
string Test1(string Id);

您需要更改Visual Studio在Web.Config文件中为WCF服务创建的默认配置，以便它与jQuery客户端代码发送的HTTP协议请求一起工作

<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="Service">
    <endpoint address="" binding="webHttpBinding" 
        contract="IService" behaviorConfiguration="EndpBehavior"/>
   </service>
  </services>
</system.serviceModel>

---

任何异常或错误？我收到错误400:请求错误。[WebInvokeMethod=POST，BodyStyle=WebMessageBodyStyle.Wrapped，ResponseFormat=WebMessageFormat.Json]不是必需的，因为这是默认设置。My web.config已被更改为使用JQUERY发送的HTTP POST请求查看我的代码。我的JQUERY代码与您发布的代码相同。由于我写的代码与我发布的代码在一个项目中有效，但在另一个项目中不起作用，因此我假设一定有其他因素影响它。请检查两个ur配置文件是否相同这些文件是否相同

function CallService() {
    $.ajax({
        type: Type, //GET or POST or PUT or DELETE verb
        url: Url, // Location of the service
        data: Data, //Data sent to server
        contentType: ContentType, // content type sent to server
        dataType: DataType, //Expected data format from server
        processdata: ProcessData, //True or False
        success: function(msg) {//On Successfull service call
            ServiceSucceeded(msg);
        },
        error: ServiceFailed// When Service call fails
    });
}

function ServiceFailed(result) {
    alert('Service call failed: ' + result.status + '' + result.statusText);
    Type = null;
    varUrl = null;
    Data = null; 
    ContentType = null;
    DataType = null;
    ProcessData = null;
}