Struts2 中文乱码解决方案

<filter>
  	<filter-name>CharacterEncodingFilter</filter-name>
  	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  	<init-param>
  		<param-name>encoding</param-name>
  		<param-value>GBK</param-value>
  	</init-param>
  </filter>
  
  <filter-mapping>
  	<filter-name>CharacterEncodingFilter</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>

JSP文件头：
<%@ page contentType="text/html" language="java" import="java.sql.*"  pageEncoding="UTF-8"  %>

搞定！