tomcat怎么设置跟iis那种类似的访问密码

<script type="text/javascript">google_ad_client = "pub-8800625213955058";/* 336x280, 创建于 07-11-21 */google_ad_slot = "0989131976";google_ad_width = 336;google_ad_height = 280;//</script><script type="text/javascript"src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>问题：tomcat怎么设置访问密码？跟iis那种类似的 ? 回答：例如你要控制对ROOT目录下文件的访问：首先更改$TOMCAT_HOME/ROOT/WEB-INF/web.xml1。在<web-app>和</web-app>之间加入<security-constraint><web-resource-collection><web-resource-name>Entire Application</web-resource-name><url-pattern>/*</url-pattern></web-resource-collection><auth-constraint><!-- NOTE: This role is not present in the default users file --><role-name>user</role-name></auth-constraint></security-constraint><!-- Define the Login Configuration for this Application --><login-config><auth-method>BASIC</auth-method><realm-name>TEST ACCESS CONTROL</realm-name></login-config>2。然后在$TOMCAT_HOME/conf/tomcat-users.xml中加入<user name="user" password="password" roles="user"/>roles的名字和web.xml中的相对应在TOMCAT4.03中测试通过