Configure embedded Jetty server in spring boot Configure embedded Jetty server in spring boot

Spring boot use tomcat as default embedded tomcat server to run a web application but you can configure jetty server to replace tomcat in easy steps.

Add spring-boot-starter-jetty dependency

We need to do two things here:-

  1. Exclude default dependency spring-boot-starter-tomcat added in spring-boot-start-web
  2. Add spring-boot-starter-jetty dependency.

That’s it. You have replaced tomcat with jetty server.


When you build spring boot maven project, it smartly replace tomcat jars with jetty dependency jars from maven dependency as follows:

▼ Maven Dependencies
  ► tomcat-embed-core-x.y.z.jartomcat-embed-el-x.y.z.jartomcat-embed-websocket-x.y.z.jar
  ► jetty.servlets-x.y.z.jar
  ► jetty.continuation-x.y.z.jar
  ► jetty-http-x.y.z.jar
  ► jetty-webapp-x.y.z.jar
  ► jetty-servlet-x.y.z.jar
  ► jetty-security-x.y.z.jar
  ► jetty-server-x.y.z.jar

When you start spring boot application, You will in the logs that jetty is serving your web application now:-

2020-04-25 13:25:02.208 - INFO [main] c.a.s.SpringbootApplication              :  Starting SpringbootMicroserviceApplication on Ashishs-MBP with PID 2910
2020-04-25 13:25:02.213 - INFO [main] c.a.s.SpringbootApplication              :  No active profile set, falling back to default profiles: default
2020-04-25 13:25:03.317 - INFO [main] o.s.b.w.e.j.JettyServletWebServerFactory :  Server initialized with port: 8080
2020-04-25 13:25:03.320 - INFO [main] org.eclipse.jetty.server.Server          :  jetty-9.4.27.v20200227; built: 2020-02-27T18:37:21.340Z; git: a304fd9f351f337e7c0e2a7c28878dd536149c6c; jvm 1.8.0_211-b12
2020-04-25 13:25:03.350 - INFO [main] o.e.j.s.h.ContextHandler.application     :  Initializing Spring embedded WebApplicationContext
2020-04-25 13:25:03.476 - INFO [main] o.e.jetty.server.handler.ContextHandler  :  Started o.s.b.w.e.j.JettyEmbeddedWebAppContext@30c3ae63
2020-04-25 13:25:03.476 - INFO [main] org.eclipse.jetty.server.Server          :  Started @2273ms