tomcat运行报错Failed to start component [StandardEngine[Catalina].StandardHost[localhost].多半情况是找不到jar包
解决办法：
右键项目-> 属性->添加lib
tomcat运行报错Failed to start component [StandardEngine[Catalina].StandardHost[localhost].
文章来自：https://www.cnblogs.com/firstdream/p/8401626.html