1)在pom中直接引入依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency>
2)设置以下两项 重要
1) “File” -> “Settings” -> “Build,Execution,Deplyment” -> “Compiler”,选中打勾 “Build project automatically” 2) 组合键:“Shift+Ctrl+Alt+/” ,选择 “Registry” ,选中打勾 “compiler.automake.allow.when.app.running”