0.準備工作

Springboot專案 （pom.xml <packaging>jar</packaging>）

1.新增Jar包

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

2.修改pom.xml

<packaging>jar</packaging> to <packaging>war</packaging> 
 

3.建立ServletInitializer繼承SpringBootServletInitializer

   public class ServletInitializer extends SpringBootServletInitializer {
       @Override
       protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
           return application.sources(SpringbootDemoApplication.class);  
       }
   }
   其中SpringbootDemoApplication為SpringBootApplication