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https://issues.apache.org/jira/browse/WW-5006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastian Götz updated WW-5006:
-------------------------------
Description:
In some JSP we access static field (constants) of an interface. The interface
has scope public and and the fields are public static final.
When accessing the value of such a field the ValueStack throws a
NullPointerException here (com.opensymphony.xwork2.util.ProxyUtil), because
there is actually not object (parameter holds null) when accessing a static
member:
{code:java}
/**
* Check whether the given object is a proxy.
* @param object the object to check
*/
public static boolean isProxy(Object object) {
Class<?> clazz = object.getClass();
Boolean flag = isProxyCache.get(clazz);
if (flag != null) {
return flag;
}
boolean isProxy = isSpringAopProxy(object);
isProxyCache.put(clazz, isProxy);
return isProxy;
}
{code}
Support to access static members is switched on via struts constant
{{<constant name="struts.ognl.allowStaticMethodAccess" value="true" />}}
was:
In some JSP we access static field (constants) of an interface. The interface
has scope public and and the fields are public static final.
When accessing the value of such a field the ValueStack throws a
NullPointerException here because there is actually not object (parameter holds
null) when accessing a static member:
{{/**}}
{{ * Check whether the given object is a proxy.}}
{{ * @param object the object to check}}
{{ */}}
{{ public static boolean isProxy(Object object) {}}
{{ Class<?> clazz = object.getClass();}}
{{ Boolean flag = isProxyCache.get(clazz);}}
{{ if (flag != null) {}}
{{ return flag;}}
{{ }}}{{boolean isProxy = isSpringAopProxy(object);}}{{isProxyCache.put(clazz,
isProxy);}}
{{ return isProxy;}}
{{ }}}
Support to access static members is switched on via struts constant
{{<constant name="struts.ognl.allowStaticMethodAccess" value="true" />}}
> NullPointerException in ProxyUtil class when accessing static member
> --------------------------------------------------------------------
>
> Key: WW-5006
> URL: https://issues.apache.org/jira/browse/WW-5006
> Project: Struts 2
> Issue Type: Bug
> Components: Value Stack
> Affects Versions: 2.5.20
> Reporter: Sebastian Götz
> Priority: Major
>
> In some JSP we access static field (constants) of an interface. The interface
> has scope public and and the fields are public static final.
> When accessing the value of such a field the ValueStack throws a
> NullPointerException here (com.opensymphony.xwork2.util.ProxyUtil), because
> there is actually not object (parameter holds null) when accessing a static
> member:
> {code:java}
> /**
> * Check whether the given object is a proxy.
> * @param object the object to check
> */
> public static boolean isProxy(Object object) {
> Class<?> clazz = object.getClass();
> Boolean flag = isProxyCache.get(clazz);
> if (flag != null) {
> return flag;
> }
> boolean isProxy = isSpringAopProxy(object);
> isProxyCache.put(clazz, isProxy);
> return isProxy;
> }
> {code}
>
> Support to access static members is switched on via struts constant
> {{<constant name="struts.ognl.allowStaticMethodAccess" value="true" />}}
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