修改

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>	       
</dependency>

為

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>
	<exclusions>
		<exclusion>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
		</exclusion>
	</exclusions>            
</dependency>
<dependency>
	<groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-jetty</artifactId>
  </dependency>