启动tomcat报host-manager does not exist or is not a readable di

新安装了一个tomcat6,安装完之后在webapps下面会有一些tomcat自带的项目(ROOT、manager、host-manager...) 把这些没用的项目删掉之后，启动tomcat 报如下错误

java.lang.IllegalArgumentException: Document base D:\tomcat\webapps\host-manager does not exist or is not a readable directory
	at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:142)
	at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4320)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4489)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
	at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:675)
	at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:601)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)

原因是，在你未删除这些之前启动过tomcat 然后会在tomcat\conf目录下自动生成Catalina文件夹

解决办法可以删除这个Catalina文件夹，如下：

或者在还没启动tomcat之前(干净的tomcat)删除那些没用的项目然后再启动tomcat