pom文件中添加
1 <!-- 热部署 -->
2 <dependency>
3 <groupId>org.springframework.boot</groupId>
4 <artifactId>spring-boot-devtools</artifactId>
5 <optional>true</optional>
6 <scope>true</scope>
7 </dependency>
8 ----------------------------------------------------
9 <build>
10 <plugins>
11 <plugin>
12 <groupId>org.springframework.boot</groupId>
13 <artifactId>spring-boot-maven-plugin</artifactId>
14 <configuration>
15 <!-- 没有该配置，devtools 不生效 -->
16 <fork>true</fork>
17 <addResources>true</addResources>
18 </configuration>
19 </plugin>
20 </plugins>
21 </build>
file-》settings-》build，execution，deployment-》Compiler
alt + shift + a 搜索 registry 选第一个
弹出框后下拉找到 compiler.automake.allow.when.app.running 勾选上即可
