多个Filter 的执行顺序

如果在WEB.XML中有多个Filter,则执行顺序为
<filter-mapping>的顺序

<filter-mapping>
<filter-name>secondFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
<filter-name>sysoutFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

执行顺序为 secondFilter, sysoutFilter

Configuring a Chain of Filters

WebLogic Server creates a chain of filters by creating a list of all the filter mappings that match an incoming HTTP request. The ordering of the list is determined by the following sequence:

Filters where the

filter-mapping

element contains a

url-pattern

that matches the request are added to the chain in the order they appear in the

web.xml

deployment descriptor.

Filters where the

filter-mapping

element contains a

servlet-name

that matches the request are added to the chain
after the filters that match a URL pattern.

The last item in the chain is always the originally requested resource.

In your filter class, use the

FilterChain.doFilter()

method to invoke the next item in the chain.