1.添加依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
2. Compiler，勾选 “Make project automatically”
3.快捷键 Shift+Ctrl+Alt+/ ，选择 “Registry” ，选中打勾 “compiler.automake.allow.when.app.running”
4.设置缓存为false