Description: Servlet Filters are used to a user request for a unified authentication (such as: restrictions on IP, the blacklist does not allow users to access) to a user request records, audits (such as: write to the log, etc.) to send the data to the user to filter or replace (for example: Filter bad information, etc.) convert image formats compress the response content to reduce the transmission rate on request, to respond to the content encryption, decryption operations
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lab9_1源程序\.classpath
............\.mymetadata
............\.project
............\.settings\org.eclipse.jdt.core.prefs
............\src\FirstFilter.java
............\WebRoot\index.jsp
............\.......\META-INF\MANIFEST.MF
............\.......\test.html
............\.......\WEB-INF\classes\FirstFilter.class
............\.......\.......\web.xml
............\.......\.......\classes
............\.......\.......\lib
............\.......\META-INF
............\.......\WEB-INF
............\.myeclipse
............\.settings
............\src
............\WebRoot
lab9_1源程序
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