The modified JSP file does not work after it is run... Solution

I recently registered to participate in a Web page production competition and had the opportunity to visit jiangda again in August 22. I was excited.

I can make up for my almost zero web page production knowledge, so today, cit3d was officially invested in JSP development on the date of the World Cup.

Everything is ready, run several times, and make a hello World. The effect is good. Happy... when you don't want to modify the code and run it again, the interface does not respond. It is a blank page, just like no code is written. After Google Plus Baidu is fixed, I did not delete the work in Tomcat, nor restart the server to solve the problem. Finally, I tried to clear the browser cache.

PS: I am using the window of the world