乱码问题一般出在2个方面无非是 应用程序和数据库，最好应用程序和数据库都设置同意编码比较好，这样就会解决乱码问题


1：<%@ page language="java" contentType="text/html;charset=GBK"%>
2：增加filter
<filter>
  <filter-name>EncodingFilter</filter-name>
  <display-name>EncodingFilter</display-name>
  <description>no description</description>
  <filter-class>
   net.loocky.sport.web.CharacterEncodingFilter
  </filter-class>
  <init-param>
   <param-name>encoding</param-name>
   <param-value>GBK</param-value>
  </init-param>
 </filter>
 <filter-mapping>
  <filter-name>EncodingFilter</filter-name>
  <url-pattern>*.jsp</url-pattern>
 </filter-mapping>
  <filter-mapping>
  <filter-name>EncodingFilter</filter-name>
  <url-pattern>*.do</url-pattern>
 </filter-mapping>


3：mysqladmin.exe -uroot -proot shutdown 停掉数据库

 修改my.ini

default-character-set=utf8

mysqld重新启动，就解决了乱码问题