1. 修改pom.xml檔案，新增依賴，打包改成war格式

		<dependency>
			<groupId>org.apache.tomcat</groupId>
			<artifactId>tomcat-servlet-api</artifactId>
			<version>8.0.36</version>
			<scope>provided</scope>
		</dependency>

2. 修改啟動類 SpringbootFirstApplication，繼承SpringBootServletInitializer，重寫configure方法

package com.example.springboot_first;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class SpringbootFirstApplication extends SpringBootServletInitializer {

	public static void main(String[] args) {
		SpringApplication.run(SpringbootFirstApplication.class, args);
	}

	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
		return builder.sources(SpringbootFirstApplication.class);
	}
}
 

1. 配置Tomcat（假設你的電腦上已經裝有Tomcat了）
   
   
   這裡選擇tomcat得版本為8.5.20
   
   
   
   配置工程訪問字尾，可以不配，最後 apply---->ok
   
2. maven打包部署