JSP 中文传到 Spring MVC controller 乱码问题

jsp页面编码设置 <%@ page pageEncoding="UTF-8"%>

修改web.xml，增加编码过滤器

<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>