filter编码过滤器

 1     <filter>
 2     <filter-name>CharacterEncodingFilterfilter-name>
 3     <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
 4     <init-param>
 5       <param-name>encodingparam-name>
 6       <param-value>UTF-8param-value>
 7     init-param>
 8     <init-param>
 9       <param-name>forceResponseEncodingparam-name>
10       <param-value>trueparam-value>
11     init-param>
12   filter>
13   <filter-mapping>
14     <filter-name>CharacterEncodingFilterfilter-name>
15     <url-pattern>/*url-pattern>
16   filter-mapping>