Springboot 在没有配置的情况下,默认采用了Jetty启动, 这是为什么?

Question

1. 之前使用和网上的资料都是默认启动使用tomcat;
2. 最近在搭建Springboot时没有排除tomcat, 也没有引入jetty依赖, 但是在启动时默认采用Jetty启动;

3. 以下是pom引入的依赖:

   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-test</artifactId>
       <scope>test</scope>
   </dependency>
   <!--spring端点监视器-->
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-actuator</artifactId>
   </dependency>
   <!--<dependency>-->
       <!--<groupId>org.springframework.boot</groupId>-->
       <!--<artifactId>spring-boot-starter-redis</artifactId>-->
       <!--<version>1.3.0.RELEASE</version>-->
   <!--</dependency>-->
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-security</artifactId>
   </dependency>
   <dependency>
       <groupId>commons-io</groupId>
       <artifactId>commons-io</artifactId>
       <version>2.4</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
   <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>
       <version>3.7</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
   <!--自动生成API文档-->
   <dependency>
       <groupId>io.springfox</groupId>
       <artifactId>springfox-swagger2</artifactId>
       <version>2.7.0</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
   <dependency>
       <groupId>io.springfox</groupId>
       <artifactId>springfox-swagger-ui</artifactId>
       <version>2.7.0</version>
   </dependency>
   <!-- https://mvnrepository.com/artifact/com.github.tomakehurst/wiremock -->
   <!--伪造Rest服务-->
   <dependency>
       <groupId>com.github.tomakehurst</groupId>
       <artifactId>wiremock</artifactId>
       <version>2.12.0</version>
   </dependency>
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-thymeleaf</artifactId>
   </dependency>
   
   <!--可以直接使用注解引入配置文件中的值-->
   <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-configuration-processor</artifactId>
       <optional>true</optional>
   </dependency>
   <!--query dsl end-->
   <dependency>
       <groupId>javax.mail</groupId>
       <artifactId>mail</artifactId>
       <version>1.5.0-b01</version>
   </dependency>
   <!--oauth2.0-->
   <dependency>
       <groupId>org.springframework.security.oauth</groupId>
       <artifactId>spring-security-oauth2</artifactId>
   </dependency>
   <dependency>
       <groupId>org.springframework.security</groupId>
       <artifactId>spring-security-jwt</artifactId>
   </dependency>
   
   
   

Answer 1

用插件或者命令行看一下dependency:tree，是不是有包引用了jetty-starter