BaseWeb06-JSP

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过滤器

package com.chb.filter;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 CharacterEncodingFilter implements Filter{    protected String encoding = null;    public void destroy() {        this.encoding = null;    }    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)            throws IOException, ServletException    {        request.setCharacterEncoding(this.encoding);        chain.doFilter(request, response);    }    /**     * 初始化参数，从init-param     */    public void init(FilterConfig filterConfig) throws ServletException {        this.encoding = filterConfig.getInitParameter("encoding");        if (this.encoding == null || "".equals(encoding.trim())) {            this.encoding = "UTF-8";        }    }}

在web.xml中设置filter的配置

这里写图片描述

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