在Web.xml中设置编码拦截器

 1 <!--配置编码过滤器(过滤器必须要写在上面，因为有缓存)-->
 2     <filter>
 3         <filter-name>characterEncodingFilter</filter-name>
 4         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
 5         <init-param>
 6             <param-name>encoding</param-name>
 7             <param-value>UTF-8</param-value>
 8         </init-param>
 9         <init-param>
10             <param-name>forceEncoding</param-name>
11             <param-value>true</param-value>
12         </init-param>
13     </filter>
14     <filter-mapping>
15         <filter-name>characterEncodingFilter</filter-name>
16         <url-pattern>/*</url-pattern>
17     </filter-mapping>