06、Spring_web.xml_CharacterEncodingFilter

类名：CharacterEncodingFilter；

类路径：org.springframework.web.filter.CharacterEncodingFilter；

类作用：Spring容器管理request和response统一设置编码格式；

用法：

 <filter>

  <filter-name>encodingFilter</filter-name>

  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

  <init-param>

<!-- 设置request的编码格式为utf-8 -->

   <param-name>encoding</param-name>

   <param-value>UTF-8</param-value>

  </init-param>

  <init-param>

<!-- 设置response的编码格式和request相同，默认为false -->

   <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>