Spring user session control sample ?

[PrettyHandling]

Hi,

   I need an workable example of user session management using Spring. For example,

<logic:notPresent name="accountBean" scope="session">
  <html:link page="/shop/signonForm.shtml">
sign-in</html:link>
</logic:notPresent>
<logic:present name="accountBean" scope="session">
  <logic:notEqual name="accountBean" property="authenticated" value="true" scope="session">
        <html:link page="/shop/signonForm.shtml">
sign-in</html:link>
  </logic:notEqual>
</logic:present>

<logic:present name="accountBean" scope="session">
  <logic:equal name="accountBean" property="authenticated" value="true" scope="session">
      <html:link page="/shop/signoff.shtml">
   sign-out</html:link>
  </logic:equal>
</logic:present>

the above code is taken from JPetstore 4.

Appreciate if anyone can provide an example. Thanks !

regards,
PrettyHandling

[Matt Raible]

It looks like you're simply trying to port your Struts <logic> tags to Spring.  You could use JSTL's "core" tag. 

<old>
<logic:notPresent name="accountBean" scope="session">
<html:link page="/shop/signonForm.shtml">
sign-in</html:link>
</logic:notPresent>
<logic:present name="accountBean" scope="session">
<logic:notEqual name="accountBean" property="authenticated" value="true" scope="session">
<html:link page="/shop/signonForm.shtml">
sign-in</html:link>
</logic:notEqual>
</logic:present>
</old>

<new>
<c:if test="${sessionScope.accountBean == null}">
    <a href="<c:url value='/shop/signonForm.shtml'/>">sign-in</a>
</c:if>
<c:if test="${sessionScope.accountBean != null}">
   <c:if test="${sessionScope.accountBean.authenticated != 'true'>
       <a href="<c:url value='/shop/signonForm.shtml'/>">
       sign-in</a>
   </c:if>
</c:if>
</new>

The "sessionScope" part is optional - the tag will look through all scopes if it's not specified.

Matt