解决JSP提交表单保存到Mysql中文乱码的问题
JSP网页即使写成?
<%@ page contentType= “text/html; charset=UTF-8 ” language= “java ” import= “java.sql.* ” errorPage= “error.jsp ” %>?
Mysql里存取的数据库的charset也设成了UTF-8，可是通过JSP网页存取中文还是显示乱码 。解决的办法就是加一个过滤器：
package cn.cate.utils;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 SetCharacterEncodingFilter implements Filter{protected String encoding = null; protected FilterConfig filterConfig = null; protected boolean ignore = true; @Overridepublic void destroy() {this.encoding = null; this.filterConfig = null; }@Overridepublic void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {if (ignore || (request.getCharacterEncoding() == null)) { String encoding = selectEncoding(request); if (encoding != null) { request.setCharacterEncoding(encoding); } } chain.doFilter(request, response); }@Overridepublic void init(FilterConfig filterConfig) throws ServletException {this.filterConfig = filterConfig; this.encoding = filterConfig.getInitParameter("encoding"); String value = filterConfig.getInitParameter("ignore"); if (value == null) { this.ignore = true; } else if (value.equalsIgnoreCase("true")) { this.ignore = true; } else if (value.equalsIgnoreCase("yes")) { this.ignore = true; } else { this.ignore = false; } }protected String selectEncoding(ServletRequest request) { return (this.encoding); } }?然后在web.xml作如下配置：
<filter> <filter-name>Set Character Encoding</filter-name> <filter-class>cn.cate.utils.SetCharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>Set Character Encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>?