我是否正在使用Tomcat Web服务器？

Question

so i'm making this application in Spring Boot and i know by default, spring boot is embedded to tomcat web server. But i'm not sure whether it's tomcat web server or else because in my dependency there is no tomcat dependency in my code. but i access the webserver succesfully through

localhost:8080

and here is my dependency

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
 </dependency>
 <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
 </dependency>
 <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
 </dependency>

so am i using the tomcat server or not?

Answer 1

You're using embedded tomcat by default as spring-boot-starter-web has a dependency on tomcat libraries which are transitive.

To be more precise, spring-boot-starter-web among other things has the following definition in its pom.xml:

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>

Answer 2

Check your logs, please, or console messages,

Spring Boot prints this

2018-09-25 00:45:24 INFO   TomcatWebServer 91: Tomcat initialized with port(s): 8080 (http) 

Answer 3

spring-boot-starter-web comes with Embedded Tomcat. In case you want to edit the

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>

It has the below properties :
server:
port:
undertow:
ioThreads:
workerThreads:
accesslog:
enabled:
compression:
enabled:
mimeTypes:
minResponseSize: