错误 Server Tomcat v6.0 Server at 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” id=”JBoss v5.0 at localhost” name=”JBoss v5.0 at localhost” runtime-id=”JBoss v5.0″ server-type=”org.eclipse.jst.server.generic.jboss5″ server-type-id=”org.eclipse.jst.server.generic.jboss5″ start-timeout=”1000″ stop- timeout=”15″ timestamp=”0″> <map jndiPort=”1099″ key=”generic_server_instance_properties” port=”8090″ serverAddress=”127.0.0.1″ serverConfig=”default”/> </server> </servers> 把 start-timeout=”45″ 改为 start-timeout=”1000″ 或者更长 重启eclipse就可以了。 这个原因就是：启动tomcat需要的时间比45秒大了，Eclipse会判断tomcat在默认的时间是否启动了，如果在默认45秒没有启动就会报错了。