不太懂web。xml中
      <filter>
     <filter-name>CharacterEncodingFilter</filter-name>
     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
     <init-param>
       <param-name>encoding</param-name>
       <param-value>GBK</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>
这个编码格式是管什么用的？还有tomcat中server。xml的配置
  <Connector port=”8080″ protocol=”HTTP/1.1″ 
               connectionTimeout=”20000″ 
               redirectPort=”8443″ URIEncoding=””GBK””/>
这个编码格式又是干嘛用的？
他们两个作用相同吗？求高人回答。。。