Question

我创建了一个WCF服务，它应该由客户端的Javascript（Json）使用。网站由ASP.NET MVC生成。我把所有东西都运行在localhost IIS-Express上。问题是，当我从Javascript调用此WCF服务时，它会抛出并且未定义错误。许多想法之一，为什么会出现此错误，WCF web.config设置不正确，并且不允许跨站点脚本。

这是web.config文件

  <?xml version="1.0"?>
       <configuration>
         <system.serviceModel>        
           <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
    <services>
      <service behaviorConfiguration="Default"
            name="Wcf_Categories.Categories">
        <endpoint address=""
                  behaviorConfiguration="webBehavior"
                  binding="webHttpBinding"
                  contract="Wcf_Categories.ICategories" />    
        <endpoint address="sc"
                  behaviorConfiguration="script"
                  binding="webHttpBinding" 
                  bindingConfiguration="crossDomain"
                  contract="Wcf_Categories.ICategories"/>    
        <endpoint contract="IMetadataExchange" binding="mexHttpBinding"
                        address="mex" />    
      </service>
    </services>
    <bindings>
      <webHttpBinding>
        <binding name="crossDomain" crossDomainScriptAccessEnabled="true" />
      </webHttpBinding>
    </bindings>
    <behaviors>
      <endpointBehaviors>
        <behavior name="webBehavior">
          <webHttp helpEnabled="true" />
        </behavior>
        <behavior name="script">
          <enableWebScript/>
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="Default">
          <serviceMetadata httpGetEnabled="true" />
        <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
        <behavior name="">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>      
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <!--
        To browse web app root directory during debugging, set the value below to true.
        Set to false before deployment to avoid disclosing web app folder information.
      -->
    <directoryBrowse enabled="true"/>
  </system.webServer>
  <system.web>
    <compilation debug="true"/>
  </system.web>
</configuration>

如果我直接从浏览器调用服务，例如localhost：1813 / Categories.svc / sc / GetData？name = undefined 它返回建议的数据并且行为正常（在localhost / TestSites / Products＃上运行的站点）

这是wcf服务调用的脚本

function GetCategories(categoryName) {
$.ajax({
    type: "GET",
    async: "false",
    url: "localhost:1813/Categories.svc/sc/GetData",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    data : 'name='+categoryName,
    processData: true,
    success: function (result) {
        ServiceSucceeded(result);
    },
    error: ServiceFailed
});
 }

function ServiceSucceeded(result) {
 var resultObject;
 if (DataType == "json") {
    resultObject = result.GetUserResult;    
    for (i = 0; i < resultObject.length; i++) {
        alert(resultObject[i]);
    }    
   }    
 }

function ServiceFailed(xhr) {
        alert(xhr.responseText);<---------------------- Alert output is "undefined". Exception details = [Exception... "<no message>" nsresult: "0x805e0006 (<unknown>)" location: "JS frame :: http://localhost/TestSites/content/js/jquery-1.10.2.min.js :: .send :: line 6" data: no] ------->
if (xhr.responseText) {
    var err = xhr.responseText;
    if (err)
        error(err);
    else
        error({ Message: "Unknown server error." });
}

return;
}

通过Javascript使用WCF服务

0 个答案: