Springboot在IDEA中执行，开启热部署

1 - Enable Automake from the compiler 

PRESS: CTRL + SHIFT + A 
TYPE: make project automatically 
PRESS: Enter 
Enable Make Project automatically feature 
2 - Enable Automake when the application is running 

PRESS: CTRL + SHIFT + A 
TYPE: Registry 
Find the key compiler.automake.allow.when.app.running and enable it 
Note: Restart your application now 

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional> <!-- 这个需要为 true 热部署才有效 -->
            <scope>runtime</scope>
        </dependency>