多域名服务器配置问题????????????????????

1 在 C:\WINDOWS\system32\drivers\etc 文件夹下的hosts文件里追加:
1.2.3.4  www.a.com 
1.2.3.4  www.b.cn
1.2.3.4  www.c.com


2 在 \Tomcat\Tomcat 5.0\conf 文件夹下的server.xml文件里修改:
  <Service name="Catalina"> 
    <Connector port="80" maxThreads="500" minSpareThreads="450" maxSpareThreads="400" enableLookups="false" redirectPort="8443" acceptCount="100" debug="0" connectionTimeout="20000" disableUploadTimeout="true" />
    <Connector port="8009" enableLookups="false" redirectPort="8443" debug="0" protocol="AJP/1.3" />
    <Engine name="Catalina" defaultHost="1.2.3.4" debug="0">
      <Logger className="org.apache.catalina.logger.FileLogger" prefix="catalina_log." suffix=".txt" timestamp="true"/>
      <Realm className="org.apache.catalina.realm.UserDatabaseRealm" debug="0" resourceName="UserDatabase"/>
<Host name="www.a.com" debug="0" appBase="webapps\ywn" unpackWARs="true"  autoDeploy="true">
<Context  path=""  docBase=""  debug="5"/> 
<Valve  className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="cust1_access_log." suffix=".txt" pattern="common"  resolveHosts="false"/> 
</Host>   
<Host name="www.b.cn" debug="0" appBase="webapps\ywnnt" unpackWARs="true"  autoDeploy="true">
<Context  path=""  docBase=""  debug="5"/> 
<Valve  className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="cust1_access_log." suffix=".txt" pattern="common"  resolveHosts="false"/> 
</Host>
<Host name="www.c.com" debug="0" appBase="webapps\czlefun" unpackWARs="true"  autoDeploy="true">
<Context  path=""  docBase=""  debug="5"/> 
<Valve  className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="cust1_access_log." suffix=".txt" pattern="common"  resolveHosts="false"/> 
</Host>
    </Engine>
  </Service>

问题是:
  "www.a.com","www.b.com"是JAVA做的程序,"www.c.com"是纯HTML做的程序.
  "www.a.com","www.b.com"可以运行访问,"www.c.com"就是不能访问,请大家帮忙解决下

没有遇到过该问题，难道是权限或者是路径？

CSDN上没人能解决吗????????????????????????????????????

jf

不能访问 是什么现象 ？看了 log 吗？有什么记录？