org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)

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

org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)

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

com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)

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

sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)

</pre></p>\r

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

com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)

com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)

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