我想要设置一个WCF,该AJAX可以通过AJAX从我们的Sharepoint Foundation 2010站点上的自定义Web部件加载的JavaScript调用。为了简化Javascript端的处理,我想提供一个让Json回到调用者的Restful服务。当使用AJAX访问Sharepoint WCF时,SPContext.Current为空
问题是,当我用AJAX调用服务器时,SPContext.Current为空。
我使用MultipleBaseAddressWebServiceHostFactory中SVC文件来创建Web服务
<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$"%>
<%@ServiceHost Language="C#" Debug="true"
Service="Driftportalen.LvService.SuggestService"
Factory="Microsoft.SharePoint.Client.Services.MultipleBaseAddressWebServiceHostFactory, Microsoft.SharePoint.Client.ServerRuntime, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"
%>
合同为WebService是:
[ServiceContract(Namespace = "", ProtectionLevel= ProtectionLevel.None)]
public interface ISuggestServiceTest
{
[WebGet(UriTemplate = "/SuggestAddress/{streetprefix}/", ResponseFormat = WebMessageFormat.Json)]
[OperationContract]
Dictionary<string, GenericAddress> SuggestAddress(string streetprefix);
}
web服务的实现基本如下。
[Guid("BA6733B3-F98D-4AD8-837D-7673F8BC527F")]
[BasicHttpBindingServiceMetadataExchangeEndpoint]
[ServiceBehavior(IncludeExceptionDetailInFaults = true, AddressFilterMode = AddressFilterMode.Any)]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
public class SuggestService : ISuggestServiceTest
{
private SPWeb currentWeb;
public SPWeb CurrentWeb
{
get
{
if (currentWeb == null)
{
var siteUrl = SPContext.Current.Web.Url;
SPSecurity.RunWithElevatedPrivileges(delegate
{
using (var site = new SPSite(siteUrl))
using (var web = site.OpenWeb())
{
currentWeb = web;
}
});
}
return currentWeb;
}
}
public Dictionary<string, GenericAddress> SuggestAddress(string streetprefix)
{
LvService lvService = new LvService(CurrentWeb);
Dictionary<string, GenericAddress> suggestions = new Dictionary<string, GenericAddress>();
//SNIP
//Code that uses lvService to populate suggestions
return suggestions;
}
}
我核实,如果我叫web服务从web浏览器一切正常,而且我得到正确的数据备份。
我用下面的Ajax调用
$.ajax({
url: addressUrl + "/"+request.term,
dataType: 'json',
success: function (data) {
responseCallback(data);
$(this).removeClass("fetching");
}
});
用Firebug我已经验证正确的URL是从JavaScript调用,我已经在服务器端验证了正确的代码确实是达到了,但SPContext。当前为空。
Sharepoint服务器使用Windows和声明进行登录。这意味着实际的WCF将使用与Sharepoint解决方案不同的帐户运行,但由于我将其部署到vti_bin下面的文件夹,因此Sharepoint应向WCF提供其上下文。在我看来,AJAX调用不会触发Sharepoint提供其上下文,在某种意义上它是匿名的。
起初我以为Web服务本身是罪魁祸首,因为从browswer调用时会随机失败,但我觉得我整理这个问题了通过安装升级到SharePoint Foundation 2010
我怎样才能让来自javascript/a web服务的AJAX调用,它接受来自Javascript的AJAX调用,允许web服务访问已登录到Sharepoint站点的用户的上下文?
这节省了我的一天!你摇滚:) – 2014-12-10 17:48:27