[struts]使用过滤器设置字符集实现中文数据的提交

//建立过滤器类：
package cn.java;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
*
* @author he
*/
public class CharacterEncodingFilter implements Filter{
public void init(FilterConfig arg0) throws ServletException {
System.out.println("CharacterEncodingFilter");
}
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
arg0.setCharacterEncoding("UTF-8");
arg2.doFilter(arg0, arg1);
}
public void destroy() {
throw new UnsupportedOperationException("Not supported yet.");
}
}

//修改web应用的配置文件