servlet中过滤器的编写和配置

注：在阅读完本文后，最好再参考一下本人的这篇文章：

http://chenzheng8975.iteye.com/blog/1635277

MyFilter.java:

package com.sina.web.filter;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyFilter extends HttpServlet implements Filter {

    public void doFilter(ServletRequest arg0, ServletResponse arg1,
            FilterChain arg2) throws IOException, ServletException {
        // TODO Auto-generated method stub
        arg0.setCharacterEncoding("utf-8");
        arg2.doFilter(arg0, arg1);
       
    }

    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
       
    }   
}

web.xml:

<!-- 配置自己写的过滤器 -->
<!-- 
<filter>
<filter-name>MyFilter</filter-name>
<filter-class>com.sina.web.filter.MyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>-->

评论

1 楼 zhaojiafan 2012-07-22  

  so easy