Undertow 是红帽公司开发的一款基于 NIO 的高性能 Web 嵌入式服务器
    **

    1. <dependency>
    2. <groupId>org.springframework.boot</groupId>
    3. <artifactId>spring-boot-starter-web</artifactId>
    4. <exclusions>
    5. <exclusion>
    6. <groupId>org.springframework.boot</groupId>
    7. <artifactId>spring-boot-starter-tomcat</artifactId>
    8. </exclusion>
    9. </exclusions></dependency><dependency>
    10. <groupId>org.springframework.boot</groupId>
    11. <artifactId>spring-boot-starter-undertow</artifactId>
    12. </dependency>