Struts过滤器的使用,已解决中文问题

web.xml

<filter>
        <filter-name>Set Character Encoding</filter-name>
        <filter-class>mypack.Charset</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>ignore</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
  <filter-mapping>
    <filter-name>Set Character Encoding</filter-name>
    <servlet-name>action</servlet-name>
  </filter-mapping>



过滤的类
package mypack;
import java.io.*;
import javax.servlet.*;

public class Charset implements Filter {
    protected String encoding = null;
    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;

    public void destroy() {
        this.encoding = null;
        this.filterConfig = null;
    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)throws IOException, ServletException {
        if (ignore || (request.getCharacterEncoding() == null)) {
            String encoding = selectEncoding(request);
            if (encoding != null)
                request.setCharacterEncoding(encoding);
        }
        chain.doFilter(request, response);
    }

    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig = filterConfig;
        this.encoding = filterConfig.getInitParameter("encoding");
        String value = filterConfig.getInitParameter("ignore");
        if (value == null)
            this.ignore = true;
        else if (value.equalsIgnoreCase("true"))
            this.ignore = true;
        else if (value.equalsIgnoreCase("yes"))
            this.ignore = true;
        else
            this.ignore = false;
    }

    protected String selectEncoding(ServletRequest request) {
        return (this.encoding);
    }
}
这2个加进工程里，就可以直接运行了。不用在设置什么。
至于数据库最好设置为UTF-8.
从此以后远离中文出现乱码的烦恼。哈哈哈