SpringBoot 如何在外部容器（tomcat）中运行

1、pom.xml文件

<dependency>  
    <groupId>org.springframework.boot</groupId>  
    <artifactId>spring-boot-starter-web</artifactId>
    <!-- 移除嵌入式tomcat插件 -->
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<!-- 引入嵌入式tomcat插件  打包时，不会打包此依赖  -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>
<!-- 引入 servlet-api 打包时，不会打包此依赖 -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <scope>provided</scope>
</dependency>
<!-- project下面packaging标签改为  -->
<packaging>war</packaging>
<!-- 打包设置 -->
<build>
    <plugins>
        <!-- 打 war 包 -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <testFailureIgnore>true</testFailureIgnore>            
            </configuration>
        </plugin>
    </plugins>
    <finalName>uc</finalName>
</build>

2、将项目的启动类Application.java继承SpringBootServletInitializer并重写configure方法

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

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

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

}

3、打包：选中项目，右键 --> run as --> maven install