java ee 第三周 filter

字符过滤器CharacterFilter.java

package cn.hncu.pubs;

 

import java.io.IOException;

import java.util.Date;

 

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.annotation.WebFilter;

import javax.servlet.http.HttpServletResponse;

 

 

public class CharacterFilter implements Filter {

    private String charset;

 

 

    public void destroy() {

 

    }

 

 

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

        request.setCharacterEncoding(charset);

        response.setCharacterEncoding(charset);

        HttpServletResponse resp=(HttpServletResponse) response;

        chain.doFilter(request, resp);

    }

    public void init(FilterConfig fConfig) throws ServletException {

        charset=fConfig.getInitParameter("charset");

    }

 

}

参考网站：https://www.2cto.com/kf/201608/540067.html