web.xml中配置spring字符编码过滤器

<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>