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我想從一個簡單的WCF Web服務調用返回一個布爾值的JavaScript。簡單的JavaScript wcf webservice調用返回null爲成功的結果
我在頁面中有腳本管理器。
如下所示,回調結果總是在OnAssignSuccess javascript方法中返回null。
如果需要,我可以提供web.config。
診斷跟蹤顯示布爾在根中返回,但不是響應的一部分,如下所示。
下面是javascript代碼
function OnAssignBackup() {
var employees = document.getElementById("<%=cmbBackup.ClientID%>");
PT.UpdateBackupSupervisor(employees.value, OnAssignSuccess, OnAssignFailed);
}
function OnAssignSuccess(result) {
alert('Successfully updated your backup supervisor ' + result);
// result is null
}
這裏是簡單的Web服務
[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class PT
{
[OperationContract]
[WebInvoke(ResponseFormat = WebMessageFormat.Json)]
public bool UpdateBackupSupervisor(string backupUserGUID)
{
bool bRet = false;
.
.
.
return bRet;
}
}
下面是診斷跟蹤
<MessageLogTraceRecord>
<Addressing xmlns="http://schemas.microsoft.com/2004/06/ServiceModel/Management/MessageTrace">
<Action>urn:PT/UpdateBackupSupervisorResponse</Action>
</Addressing>
<HttpResponse xmlns="http://schemas.microsoft.com/2004/06/ServiceModel/Management/MessageTrace">
<StatusCode>OK</StatusCode>
<WebHeaders>
<Content-Type>application/json; charset=utf-8</Content-Type>
</WebHeaders>
</HttpResponse>
<root type="object" xmlns="">
<d type="boolean">true</d>
</root>
</MessageLogTraceRecord>