1 添加maven依賴
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
2 idea配置
ctrl + alt + s 設(shè)置界面，Build-Compiler 界面 勾選automatically
CTRL + SHIFT + A –>輸入并進入Registry–>勾選 compiler.automake.allow.when.app.running
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