com.alibaba.fastjson.serializer.JSONSerializer.write(JSONSerializer.java:369)

org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)

com.alibaba.fastjson.serializer.StringCodec.write(StringCodec.java:34)

com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)

org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)

sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)

com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

<b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p>\r