1.get请求
修改服务器中connector加入（URIEncoding="utf-8"）
2.post请求
在web.xml中加入
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.注意
jsp中确定页面编码为utf-8
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>