1) Authentication Filters
2) Logging and Auditing Filters
3) Image conversion Filters
4) Data compression Filters
5) Encryption Filters
6) Tokenizing Filters
7) Filters that trigger resource access events
8) XSL/T filters
9) Mime-type chain Filter

1、认证
2、登录和审计
3、图像转换
4、数据压缩
5、加密
6、标记化
7、触发
8、XSL/T
9、Mime-type

过滤器的使用场景