com.alibaba.fastjson.JSON.toJSONString(JSON.java:406)
<b>note</b> <u>The full stack trace of the root cause is available in the Apache Tomcat/7.0.62 logs.</u></p><HR size="1" noshade="noshade"><h3>Apache Tomcat/7.0.62</h3></body></html>
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
<b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p>\r