.toJSONString(JSON.java:406) coe(Action.java:68) sun.reflect.Generatedessor38.invoke(Unknown Source) sun.reflect.Delegatingpl.invoke(Unknown Source) java.lang.reflect.Method.invoke(Unknown Source) com.opensyctionInvocation.invokeAction(DefaultActionInvocation.java:452) com.opensyctionInvocation.invokeActionOnly(DefaultActionInvocation.java:291) com.opensyctionInvocation.invoke(DefaultActionInvocation.java:254) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176) com.opensyethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensyctionInvocation.invoke(DefaultActionInvocation.java:248) com.opensytor.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) com.opensyethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensyctionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133) com.opensyctionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) com.opensyethodFilterInterc