<dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-devtools</artifactId> 
      <optional>true</optional> 
 </dependency>

<build> 
    <plugins> 
      <plugin> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-maven-plugin</artifactId> 
        <dependencies> 
          <!-- spring热部署 --> 
          <dependency> 
            <groupId>org.springframework</groupId> 
            <artifactId>springloaded</artifactId> 
            <version>1.2.6.RELEASE</version> 
          </dependency> 
        </dependencies> 
      </plugin> 
    </plugins> 
  </build>