现象：在eclipse中启动tomcat总是提示“Server Tomcat v5.5 Server @ localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeout in the server editor.
修改 workspace\.metadata\.plugins\org.eclipse.wst.server.core\servers.xml文件。
<servers>
<server hostname="localhost" 或者更长，根据不同同学的工程大小来设置。最后重启eclipse就可以了。