Christian Wolfgang Stone created WW-4025:
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Summary: NullPointerException in OgnlTextParser.evaluate().
Key: WW-4025
URL: https://issues.apache.org/jira/browse/WW-4025
Project: Struts 2
Issue Type: Bug
Components: Core Interceptors
Affects Versions: 2.3.14
Reporter: Christian Wolfgang Stone
In the latest code, lukaszlenart refactored some code. Using a recent build, I
get the following error (relevant code follows).
java.lang.NullPointerException
at
com.opensymphony.xwork2.util.TextParseUtil$1.evaluate(TextParseUtil.java:161)
at
com.opensymphony.xwork2.util.OgnlTextParser.evaluate(OgnlTextParser.java:50)
at
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:172)
at
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:127)
at
com.opensymphony.xwork2.util.TextParseUtil.translateVariables(TextParseUtil.java:71)
at
org.apache.struts2.dispatcher.StrutsResultSupport.conditionalParse(StrutsResultSupport.java:198)
at
org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:185)
at
org.apache.struts2.dispatcher.ServletRedirectResult.execute(ServletRedirectResult.java:161)
at
com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:371)
at
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:275)
at
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
The relevant source code is:
+ ParsedValueEvaluator ognlEval = new ParsedValueEvaluator() {
+ public Object evaluate(String parsedValue) {
+ Object o = stack.findValue(parsedValue, asType);
+ if (evaluator != null) {
+ o = evaluator.evaluate(o.toString());
}
+ return o;
}
- }
Appears as if there is an assumption that the stack.findValue() will always
return a non-null value.
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