idea 热部署 Devtools

1.添加maven依赖

<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-devtools -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-devtools</artifactId>
   <scope>runtime</scope>
    <optional>true</optional>
</dependency>
           

2.把配置黏贴到父工程当中的pom里

<build>
        <plugins>
            <plugin>
                <!--热部署-->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.2.2.RELEASE</version>
                <configuration>
                    <fork>true</fork>
                    <addResources>true</addResources>
                </configuration>
            </plugin>
        </plugins>
    </build>
           

3.在idea打开settings并找到Compiler

(把选中的点上勾)

4. 操作 Ctrl+shift+Alt+/

（进入1.Registry）

5.选中红色箭头所指的地方并勾选

6.重启idea