springboot 一般使用jar 的方式運行，我們需要將程序放到tomcat環境下運行。

步驟如下：

1.修改pom文件。

排除內置的tomcat

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

<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>

修改打包方式

<packaging>war</packaging>

jar的方式改成 war打包。

2.修改啟動代碼

@SpringBootApplication
@ImportResource(
 
"classpath:transaction.xml")
@MapperScan({"com.neo.dao"}) 
public class DemoApplication extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication app=new SpringApplication(DemoApplication.class);
        app.addListeners(new ApplicationStartedEventListener());
        app.addListeners(new ApplicationStartingEventListener());
        app.addListeners(new ApplicationStartedEventListener2());
        
        app.run(args);
    }
    
     @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(DemoApplication.class);
    }
    
}

增加代碼

 @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(DemoApplication.class);
    }

3.進行打包

將打包後的代碼放到tomcat下執行就可以了。

springboot 程序發布到tomcat運行