Java modifications and spring modifications are published to tomcat in real time
Registration key: https://zeroturnaround.com/software/jrebel/trial/
Download offline package after registration: set 
Tomcat parameters after decompression
Windows system
VM options: -noverify -agentpath:D:\soft\IntelliJ IDEA 2017.2\jrebel\lib\jrebel64.dll
MC OS system
VM options: -agentpath:/soft\IntelliJ IDEA 2017.2\jrebel\lib\libjrebel64.dylib