jsp + mysql 存取数据乱码的解决方法

来源：互联网发布：制作网页的软件编辑：程序博客网时间：2024/06/03 09:17

本文参考网络文章整理而成。

本文所有编码格式均为UTF-8

第一步：编写过滤器类。具体如下：

package com.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;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class txtFilter implements Filter {/* * (non-Javadoc) *  * @see javax.servlet.Filter#destroy() */public void destroy() {// TODO Auto-generated method stub}/* * (non-Javadoc) *  * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, *      javax.servlet.ServletResponse, javax.servlet.FilterChain) */public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {// TODO Auto-generated method stubHttpServletRequest req = (HttpServletRequest) request;HttpServletResponse res = (HttpServletResponse) response;req.setCharacterEncoding("UTF-8");res.setCharacterEncoding("UTF-8");chain.doFilter(req, res);}/* * (non-Javadoc) *  * @see javax.servlet.Filter#init(javax.servlet.FilterConfig) */public void init(FilterConfig filterConfig) throws ServletException {// TODO Auto-generated method stub}}

第二步，配置web.xml，在其中加入如下配置代码段。具体如下：

<!-- 编码过滤 避免出现乱码 --><filter><filter-name>txtFilter</filter-name><filter-class>com.filter.txtFilter</filter-class></filter><filter-mapping><filter-name>txtFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping>