[OGNL-179] Nullsafe method selection?

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Fix Version/s: 4.0.x
• Assignee: Unassigned
• Reporter: Christian Grobmeier
• Created: 13/Jan/12 15:16
• Updated: 02/May/23 17:17

Description

For some reason it seems that with Struts 2.3.1 sending a null value does lead to confusion in OGNL. For example:

setToken(String token){}

should be set by OGNL. It works, if String != null. If String is null, OGNL claims this method does not exist for unknown reason. Probably this is somehow related to Struts, but feeling says solution can be found in OGNL.

Workaround is not to send null

2012-01-13 15:58:29,830 WARN [CommonsLogger.java:60] : Error setting expression 'week' with value '[Ljava.lang.String;@6e895972'
ognl.MethodFailedException: Method "setWeek" failed for object de.grobmeier.tab.webapp.services.DateTimeService@332b6f2a [java.lang.NoSuchMethodException: de.grobmeier.tab.webapp.services.DateTimeService.setWeek([Ljava.lang.String;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1292)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:1481)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:85)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:162)
at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:27)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:77)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2318)
at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
at ognl.SimpleNode.setValue(SimpleNode.java:301)
at ognl.Ognl.setValue(Ognl.java:737)
at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:209)
at com.opensymphony.xwork2.ognl.OgnlValueStack.trySetValue(OgnlValueStack.java:173)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:160)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:151)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:292)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:203)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)