tomcat5.0无法测试成功解决思路

tomcat5.0无法测试成功
请问我装好了tomcat5.0   ,环境变量也设置好了,但
运行http://localhost:8080/
提示要输入用户名和密码为什么(win2003)

------解决方案--------------------
楼主看一下tomcat安装文件中conf文件夹中的tomcat-users.xml文件，用写字板打开，
内容为：
<?xml version= '1.0 ' encoding= 'utf-8 '?>
<tomcat-users>
<role rolename= "manager "/>
<role rolename= "tomcat "/>
<role rolename= "admin "/>
<role rolename= "role1 "/>
<user username= "both " password= "tomcat " roles= "tomcat,role1 "/>
<user username= "tomcat " password= "tomcat " roles= "tomcat "/>
<user username= "admin " password= " " roles= "manager,admin "/> //添加mansger用户
<user username= "role1 " password= "tomcat " roles= "role1 "/>
</tomcat-users>
------解决方案--------------------
是不是端口写错了...
------解决方案--------------------
改端口，可能被别的程序占用了端口，例如oracle