apache etag配置

web.xml新增配置：

<filter>

<filter-name>etagFilter</filter-name>

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

</filter>

<filter-mapping>

<filter-name>etagFilter</filter-name>

<url-pattern>/api/PaymentSetting/*</url-pattern>

</filter-mapping>

<filter-mapping>

<filter-name>etagFilter</filter-name>

<url-pattern>/webapp/*</url-pattern>

</filter-mapping>