struts2,struts-2.3.15.2,关注:com.opensymphony.xwork2.DefaultActionInvocation.invokeAction()

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刚学习struts2
15:30:30.601 [http-nio-8080-exec-5] ERROR org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler - Exception occurred during processing request: ognl.OgnlAction.execute() java.lang.NoSuchMethodException: ognl.OgnlAction.execute() at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1247) ~[ognl-3.0.19.jar:?] at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) ~[ognl-3.0.19.jar:?] at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) ~[xwork-core-2.3.32.jar:2.3.32] at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1370) ~[ognl-3.0.19.jar:?] at ognl.ASTMethod.getValueBody(ASTMethod.java:91) ~[ognl-3.0.19.jar:?] at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ~[ognl-3.0.19.jar:?] at ognl.SimpleNode.getValue(SimpleNode.java:258) ~[ognl-3.0.19.jar:?] at ognl.Ognl.getValue(Ognl.java:467) ~[ognl-3.0.19.jar:?] at ognl.Ognl.getValue(Ognl.java:431) ~[ognl-3.0.19.jar:?] at com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:352) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:404) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:350) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) ~[xwork-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) ~[xwork-core-2.3.32.jar:2.3.32] at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) ~[struts2-core-2.3.32.jar:2.3.32] at com.opensymphony.xwork2.Defaul
03-22
java.lang.NullPointerException loginAction.LoginAction.abc(LoginAction.java:31) java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.base/java.lang.reflect.Method.invoke(Method.java:566) ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:873) ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1539) ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:96) com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:88) ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1615) ognl.ASTMethod.getValueBody(ASTMethod.java:91) ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) ognl.SimpleNode.getValue(SimpleNode.java:258) ognl.Ognl.getValue(Ognl.java:467) ognl.Ognl.getValue(Ognl.java:431) com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:351) com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:403) com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:349) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:436) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:253) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:247) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:177) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterIntercept
03-15
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