问题描述
namespace Tu.Crm.Packages.WorkFlows
{
public sealed class VersionFinder : CodeActivity
{
[Output("VersionDate")]
public OutArgument<string> VersionDate { get; set; }
protected override void Execute(CodeActivityContext executionContext)
{
IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();
try
{
IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();
IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
VersionDate.Set(executionContext,"1#22/01/2019");
}
catch (FaultException<OrganizationServiceFault> e)
{
// Handle the exception.
throw new InvalidpluginExecutionException("Some error occurred/Proxy service unreachable" + e.StackTrace);
}
}
}
}
我正在尝试从 JavaScript 调用此活动。
var req = new XMLHttpRequest();
req.open("POST",Xrm.Page.context.getClientUrl() + "/api/data/v8.2/new_versionfinderc2dcf0b12782eb11814500155de400c4",false);
req.setRequestHeader("OData-MaxVersion","4.0");
req.setRequestHeader("OData-Version","4.0");
req.setRequestHeader("Accept","application/json");
req.setRequestHeader("Content-Type","application/json; charset=utf-8");
req.onreadystatechange = function() {
if (this.readyState === 4) {
req.onreadystatechange = null;
if (this.status === 204) {
Xrm.Utility.alertDialog(this.ResponseXML);
} else {
Xrm.Utility.alertDialog(this.ResponseXML);
}
}
};
req.send();
但是,它没有返回任何数据。可能有什么问题?
解决方法
我从未尝试过使用 web api 直接在 js 中调用自定义工作流活动,并且不常使用 AFAIK。推荐的方式是将其转换为 custom action 并在 js web api 中调用。
如果你想保留这个 CWA,那么在 UI 工作流中使用它并从 js web api 执行 WF。您也可以在自定义操作中使用 CWA。