web.xml文件如下://///////////////// <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <description> This is the description of my J2EE component </description> <display-name> This is the display name of my J2EE component </display-name> <servlet-name>LoginServlet</servlet-name> <servlet-class>servlets.LoginServlet</servlet-class> </servlet> <filter> <filter-name>TomcatFormFilter</filter-name> <filter-class>filters.TomcatFormFilter</filter-class> </filter> <filter-mapping> <filter-name>TomcatFormFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet-mapping> <servlet-name>LoginServlet</servlet-name> <url-pattern>/login.aspx</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<description>
This is the description of my J2EE component
</description>
<display-name>
This is the display name of my J2EE component
</display-name>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>servlets.LoginServlet</servlet-class>
</servlet>
<filter>
<filter-name>TomcatFormFilter</filter-name>
<filter-class>filters.TomcatFormFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>TomcatFormFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/login.aspx</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
<servlet-mapping>
<servlet-name>LoginServlet </servlet-name>
<url-pattern>/login.aspx </url-pattern>
</servlet-mapping>
在
<filter> 之前吧
具体看下web.xml的DTD中的各个标签顺序
可以在这个文件里修改