springboot项目在eclipse下打包成war包

1 在pom.xml文件的配置

a 去除tomcat依赖

<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>

b 去除servlet，jstl，jsp依赖

        <!--servlet依赖 -->
		<dependency>
    		<groupId>javax.servlet</groupId>
   			<artifactId>javax.servlet-api</artifactId>
    		<version>3.1.0</version>
    		<scope>provided</scope>
		</dependency>

		<!--jstl依赖 -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<scope>provided</scope>
		</dependency>

		<!--使jsp页面生效 -->
		<dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-jasper</artifactId>
			<scope>provided</scope>
		</dependency>

2 提供外部tomcat运行的入口方法

public class StarterForTomcat extends SpringBootServletInitializer{
		//覆盖父类方法,将入口指向springboot的main
	@Override
	protected SpringApplicationBuilder 
	configure(SpringApplicationBuilder builder) {
		//参数Builder就是容器创建整个spring容器的起始对象，也就是main方法的类
		return builder.sources(StartApplicationTestJsp.class);
	}
}

3 main方法启动类

@SpringBootApplication
public class StartApplicationTestJsp {
	public static void main(String[] args) {
		SpringApplication.run(StartApplicationTestJsp.class, args);

	}	

}