Pagemethods를 통해 액세스 할 때 세션 문제
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06-07-2019 - |
문제
Pagemethods를 통해 세션에서 값에 액세스하는 데 문제가 있습니다.
아래의 예는 간단한 형태의 문제를 보여줍니다. 페이지에는 세 개의 버튼이 있으며이 각각은 다른 pagemethod를 호출하여 세션과 동일한 변수 일 것으로 예상되는 것에 액세스합니다. 실제로 반환 된 값은 아래에 표시된 것처럼 각 Pagemethod마다 다릅니다.
웹 서버에 배포 할 때만이 문제가 발생합니다. 로컬로 테스트 할 때는 문제가되지 않습니다.
Example output:
Method Session Value
DoMethod1 597cbe1c-5391-4b93-af6b-0da0068b264b
DoMethod2 35df48aa-8a58-4008-b353-be7b9f950395
DoMethod3 35df48aa-8a58-4008-b353-be7b9f950395
DoMethod1 597cbe1c-5391-4b93-af6b-0da0068b264b
DoMethod2 597cbe1c-5391-4b93-af6b-0da0068b264b
DoMethod1 35df48aa-8a58-4008-b353-be7b9f950395
DoMethod3 35df48aa-8a58-4008-b353-be7b9f950395
DoMethod1 597cbe1c-5391-4b93-af6b-0da0068b264b
DoMethod2 597cbe1c-5391-4b93-af6b-0da0068b264b
DoMethod3 35df48aa-8a58-4008-b353-be7b9f950395
Imports System.Web.Services
Public Class MethodResult
Public MethodName As String
Public SessionID As String
Public SessionValue As Object
End Class
Partial Public Class sessiontest
Inherits System.Web.UI.Page
<WebMethod()> _
Public Shared Function DoMethod1() As MethodResult
If HttpContext.Current.Session("sharedvalue") Is Nothing Then
HttpContext.Current.Session("sharedvalue") = Guid.NewGuid
End If
Dim ret = New MethodResult
ret.MethodName = "DoMethod1"
ret.SessionID = HttpContext.Current.Session.SessionID
ret.SessionValue = HttpContext.Current.Session("sharedvalue")
Return ret
End Function
<WebMethod()> _
Public Shared Function DoMethod2() As MethodResult
If HttpContext.Current.Session("sharedvalue") Is Nothing Then
HttpContext.Current.Session("sharedvalue") = Guid.NewGuid
End If
Dim ret = New MethodResult
ret.MethodName = "DoMethod2"
ret.SessionID = HttpContext.Current.Session.SessionID
ret.SessionValue = HttpContext.Current.Session("sharedvalue")
Return ret
End Function
<WebMethod()> _
Public Shared Function DoMethod3() As MethodResult
If HttpContext.Current.Session("sharedvalue") Is Nothing Then
HttpContext.Current.Session("sharedvalue") = Guid.NewGuid
End If
Dim ret = New MethodResult
ret.MethodName = "DoMethod3"
ret.SessionID = HttpContext.Current.Session.SessionID
ret.SessionValue = HttpContext.Current.Session("sharedvalue")
Return ret
End Function
End Class
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="sessiontest.aspx.vb" Inherits="project1.sessiontest" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" />
<script type="text/javascript">
function method1() {
PageMethods.DoMethod1(methodComplete);
}
function method2() {
PageMethods.DoMethod2(methodComplete);
}
function method3() {
PageMethods.DoMethod3(methodComplete);
}
//complete
function methodComplete(result) {
document.getElementById('output').innerHTML += "<tr><td>" + result.MethodName + "</td><td>" + result.SessionID + "</td><td>" + result.SessionValue + "</td></tr>";
}
</script>
<div>
<input type="button" value="Method 1" onclick="method1();" id="btn1" />
<br />
<input type="button" value="Method 2" onclick="method2();" id="Button1" />
<br />
<input type="button" value="Method 3" onclick="method3();" id="Button2" />
<br />
<table id="output" style="width:100%;">
<tr>
<th>Method Name</th>
<th>Session ID</th>
<th>Session Value</th>
</tr>
</table>
</div>
</form>
</body>
</html>
해결책
웹 방법에 대한 세션 상태를 활성화해야합니다.
예시:
<WebMethod(EnableSession:=True)> _
Public Shared Function DoMethod1() As MethodResult
If HttpContext.Current.Session("sharedvalue") Is Nothing Then
HttpContext.Current.Session("sharedvalue") = Guid.NewGuid
End If
Dim ret = New MethodResult
ret.MethodName = "DoMethod1"
ret.SessionID = HttpContext.Current.Session.SessionID
ret.SessionValue = HttpContext.Current.Session("sharedvalue")
Return ret
End Function
이것을 확인하십시오 MSDN 기사 자세한 내용은.
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