tomcat deployment war package

• The war cannot be deleted when tomcat is running, otherwise the automatically decompressed project will be deleted. You can delete war after stopping tomcat.
  
• When you redeploy, if there is the same folder as the war file, it will not redeploy.
  

1. 因为tomcat在运行期, 会實時监控webapps目錄下的war文件，如果有新增的war，就去解压它; 有删除war，就连同项目一起删除 .
2. So, if you want to delete, you can close tomcat first and then delete , it will not affect

• How to load the WAR package under Tomcat/webapps and the decompressed project with the same name ? ?

1. 首先你要明白什么时候war包才会解压
3. 当tomcat启动时候，会去查看webapps目錄下的所有war包，同时查看是否有该war包对应的，已解压的同名文件夹，
4. 如果已经存在，就不会再解压，也不會覆蓋該工程下已經被修改過的文件.
6. 只有当你删除war包对应的同名文件夹（即 你的工程 ）后，启动tomcat时才会再進行解压war文件動作