springboot打war包

添加spring-boot-starter-tomcat的provided依赖(编译时依赖)
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
添加maven-war-plugin插件
<build>
<finalName>${project.artifactId}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
修改pom的packaging为war
修改入口函数

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class MainApplication extends SpringBootServletInitializer {
	public static void main(String[] args) {
		SpringApplication.run(MainApplication.class, args);
	}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder){
return builder.sources(MainApplication.class);
}
}