Tomcat4.1.24 以后为了安全问题 servelet 要在web.xml 中设置，
下面是Example中的例子: PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
Tomcat Examples
Tomcat Example servlets and JSP pages.
Servlet Mapped Filter
filters.ExampleFilter
attribute
filters.ExampleFilter.SERVLET_MAPPED
Path Mapped Filter
filters.ExampleFilter
attribute
filters.ExampleFilter.PATH_MAPPED
Request Dumper Filter
filters.RequestDumperFilter
Set Character Encoding
filters.SetCharacterEncodingFilter
encoding
gb2312
Compression Filter
compressionFilters.CompressionFilter
compressionThreshold
10
debug
0
Servlet Mapped Filter
invoker
Path Mapped Filter
/servlet/*
listeners.ContextListener
listeners.SessionListener
SendMailServlet
SendMailServlet
snoop
SnoopServlet
Security role for anonymous access
tomcat
servletToJsp
servletToJsp
CompressionFilterTestServlet
compressionFilters.CompressionFilterTestServlet
invoker
/servlet/*
CompressionFilterTestServlet
/CompressionTest
SendMailServlet
/SendMailServlet
snoop
/snoop
servletToJsp
/servletToJsp
http://jakarta.apache.org/tomcat/debug-taglib
/WEB-INF/jsp/debug-taglib.tld
http://jakarta.apache.org/tomcat/examples-taglib
/WEB-INF/jsp/example-taglib.tld
mail/Session
javax.mail.Session
Container
Example Security Constraint
Protected Area
/jsp/security/protected/*
DELETE
GET
POST
PUT
tomcat
role1
FORM
Example Form-Based Authentication Area
/jsp/security/protected/login.jsp
/jsp/security/protected/error.jsp
role1
tomcat
minExemptions
1
java.lang.Integer
foo/name1
value1
java.lang.String
foo/bar/name2
true
java.lang.Boolean
name3
1
java.lang.Integer
foo/name4
10
java.lang.Integer
Example EJB Reference
ejb/Account
Entity
com.mycompany.mypackage.AccountHome
com.mycompany.mypackage.Account
Example Local EJB Reference
ejb/ProcessOrder
Session
com.mycompany.mypackage.ProcessOrderHome
com.mycompany.mypackage.ProcessOrder
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