解决方法1：
新建一个相同的tomcat服务器，然后将应用添加到该服务器下，再启动，应该就没有问题了（出现的问题是有的目录不存在）
解决方法2：
Software：
- apache-tomcat-6.0.18
- eclipse-jee-ganymede-SR1-win32.zip（Version: 3.4.1，Build id: M20080911-1700）
Step：
- New -> Web -> Dynamic Web Project (Target Runtime:Apache Tomcat 6.0;Dynamic Web Module Version:2.5)
- Window -> Show View -> Servers, New-> Server, Add and Remove Projects...，Start (Server)
Warning:
- [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:demo' did not find a matching property.
Solution：
- Server's Properties -> General -> Location = /Servers/Tomcat v6.0 Server at localhost.server;
- Project Explorer -> Servers -> Tomcat v6.0 Server at localhost.server, double click to open it.
- Server Options -> Check "Publish module contexts to separate XML files".
Explaination:
- Tomcat of previous version doesn't support the "source" attribute in the "Context" node of "server.xml" file.
Result:
- A separate XML file named "demo.xml" was created in the "$server path$\conf\Catalina\localhost\".