Servlet /jsp 乱码问题解决

解决最终策略 :

1. 在jsp 页面设置:

<%@ page language = "java" import = "java.util.*" pageEncoding = "utf-8" %>

< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" >

 

 

2. 数据交互有两种形式:post 和get

其中get 不仅包括表单中的get 方式, 还包括<a> 标签写的链接, 以下是两种方式的处理方法:

2.1Post 方式处理: 添加过滤器 :

2.1.1 Web.xml 中配置 :

< filter >

       < filter-name > encoding </ filter-name >

       < filter-class > com.spoto.oa.filter.EncodingFilter </ filter-class >

    </ filter >

    < filter-mapping >

       < filter-name > encoding </ filter-name >

       < url-pattern > /* </ url-pattern >

    </ filter-mapping >

 

2.1.2 过滤器的类

package com.spoto.oa.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 EncodingFilter implements Filter {

 

    public void destroy() {

 

    }

 

    public void doFilter(ServletRequest request, ServletResponse response,

           FilterChain chain) throws IOException, ServletException {

       request.setCharacterEncoding( "UTF-8" );

       chain.doFilter(request, response);

    }

 

    public void init(FilterConfig arg0) throws ServletException {

 

    }

 

}

 

2.2Get 方式 :

修改 Tomcat 根目录 /conf /Server.xml

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"   URIEncoding="utf-8"/>

 

 

3.Mysql 数据库的配置 :

url= jdbc : mysql://localhost:3306/oa?autoReconnect=true&useUnicode=true&characterEncoding= utf-8