先在pom.xml中加这两个依赖
<!-- 热部署依赖
-->
<dependency>
<groupId>org
.springframework
.boot
</groupId
>
<artifactId>spring
-boot
-devtools
</artifactId
>
<optional>true</optional
>
<scope>true</scope
>
</dependency
>
<!-- 添加spring
-boot
-maven
-plugin
-->
<build>
<plugins>
<plugin>
<groupId>org
.springframework
.boot
</groupId
>
<artifactId>spring
-boot
-maven
-plugin
</artifactId
>
<configuration>
<!-- 如果没有该项配置,devtools不会起作用,即应用不会restart
-->
<fork>true</fork
>
</configuration
>
</plugin
>
</plugins
>
</build
>
然后再看这个网址
https://www.jianshu.com/p/f658fed35786