[jira] [Updated] (WW-5006) NullPointerException in ProxyUtil class when accessing static member
[
https://issues.apache.org/jira/browse/WW-5006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
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
{{}}
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
{{}}
> 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
> {{}}
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[jira] [Created] (WW-5006) NullPointerException in ProxyUtil class when accessing static member
Sebastian Götz created WW-5006:
--
Summary: 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
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
{{}}
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[jira] [Commented] (WW-5004) No more calling of a static variable in Struts 2.8.20 available
[
https://issues.apache.org/jira/browse/WW-5004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16751635#comment-16751635
]
ASF GitHub Bot commented on WW-5004:
JCgH4164838Gh792C124B5 commented on pull request #316: Fix for NPE issue
discovered in WW-5004.
URL: https://github.com/apache/struts/pull/316
Fix for `NPE` issue discovered in WW-5004.
- Guard fix for a `NPE` that can arise under certain conditions, identified
by _A. Mashchenko_.
- This guard (or something similar) will probably be required for future
non-public field access logic ... may want to hold-off on this PR and instead
include the fix in a "fuller solution".
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> No more calling of a static variable in Struts 2.8.20 available
> ---
>
> Key: WW-5004
> URL: https://issues.apache.org/jira/browse/WW-5004
> Project: Struts 2
> Issue Type: Bug
> Components: Core
>Affects Versions: 2.5.20
> Environment: Java 7.1 and JSP Websites
>Reporter: Deniz Renkligül
>Priority: Critical
> Labels: build, features, patch, usability
> Fix For: 2.5.21, 2.6
>
>
> After the update from Struts 2.5.18 to 2.5.20 it is not more possible to call
> a java static variable in JSP like
> {code:java}
>
> {code}
> Please see for more details the release notes of 2.5.20
> [link
> https://cwiki.apache.org/confluence/display/WW/Version+Notes+2.5.20|https://cwiki.apache.org/confluence/display/WW/Version+Notes+2.5.20]
> and I tried without success the following description assigned above in the
> release version notes 2.5.20 with :
> {code:java}
>
>
> {code}
> https://issues.apache.org/jira/browse/WW-4984
>
> Thanks in advance for your support.
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[jira] [Commented] (WW-4348) Remove access to static methods
[ https://issues.apache.org/jira/browse/WW-4348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16751496#comment-16751496 ] Markus Wulftange commented on WW-4348: -- What do you mean by it gets blocked from outside? I have used the debugger in devMode like last time and it works that way. > Remove access to static methods > --- > > Key: WW-4348 > URL: https://issues.apache.org/jira/browse/WW-4348 > Project: Struts 2 > Issue Type: Improvement > Components: Core Actions >Affects Versions: 2.3.16.3 >Reporter: Lukasz Lenart >Priority: Critical > Fix For: 2.5.x > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)
