过滤器

来源：互联网发布：四川电视台网络直播编辑：程序博客网时间：2024/05/16 23:38
web.xml:
<filter> 
  <filter-name>encodingFilter</filter-name> 
        <filter-class>com.util.EncodingFilter</filter-class> 
    </filter> 
    <filter-mapping> 
        <filter-name>encodingFilter</filter-name> 
         <url-pattern>/*</url-pattern> 
    </filter-mapping> 
类:
package com.util;
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;
public class EncodingFilter implements Filter {
    public void init(FilterConfig arg0) throws ServletException {
        // TODO 自动生成方法存根 
    }
    public void doFilter(ServletRequest arg0, ServletResponse arg1,
            FilterChain arg2) throws IOException, ServletException {
        // TODO 自动生成方法存根 
        arg0.setCharacterEncoding("UTF-8");
        arg2.doFilter(arg0, arg1);
    }
    public void destroy() {
        // TODO 自动生成方法存根 
    }
}