By default, spring boot uses embedded tomcat server to run the applications. You can use embedded jetty server to launch your applications – in two simple steps:
- Exclude tomcat server dependency
- Include jetty server dependency
1. Embedded Jetty Server Configuration Example
<?xml version="1.0"?> <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.springexamples.demo</groupId> <artifactId>SpringExamples</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <groupId>com.springexamples.demo</groupId> <artifactId>embedded-jetty-server</artifactId> <version>0.0.1-SNAPSHOT</version> <name>embedded-jetty-server</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <exclusions> <exclusion> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jetty</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> </project>
2. Jetty Server Demo
Now run the application and observe the console output.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.1.RELEASE)
2018-05-05 19:55:03.344 INFO 3764 --- [ main] com.springexamples.demo.Application : Starting Application on user-PC with PID 3764 (C:\Users\user\git_springexamples\SpringExamples\embedded-jetty-server\target\classes started by user in C:\Users\user\git_springexamples\SpringExamples\embedded-jetty-server)
2018-05-05 19:55:03.458 INFO 3764 --- [ main] com.springexamples.demo.Application : No active profile set, falling back to default profiles: default
2018-05-05 19:55:03.615 INFO 3764 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@e136d3: startup date [Sat May 05 19:55:03 IST 2018]; root of context hierarchy
2018-05-05 19:55:04.802 INFO 3764 --- [ main] org.eclipse.jetty.util.log : Logging initialized @2336ms to org.eclipse.jetty.util.log.Slf4jLog
2018-05-05 19:55:05.002 INFO 3764 --- [ main] o.s.b.w.e.j.JettyServletWebServerFactory : Server initialized with port: 8080
2018-05-05 19:55:05.004 INFO 3764 --- [ main] org.eclipse.jetty.server.Server : jetty-9.4.9.v20180320; built: 2018-03-20T17:51:10+05:30; git: 1f8159b1e4a42d3f79997021ea1609f2fbac6de5; jvm 1.8.0_20-ea-b05
2018-05-05 19:55:05.284 INFO 3764 --- [ main] org.eclipse.jetty.server.session : DefaultSessionIdManager workerName=node0
2018-05-05 19:55:05.284 INFO 3764 --- [ main] org.eclipse.jetty.server.session : No SessionScavenger set, using defaults
2018-05-05 19:55:05.318 INFO 3764 --- [ main] org.eclipse.jetty.server.session : Scavenging every 660000ms
2018-05-05 19:55:05.356 INFO 3764 --- [ main] o.e.j.s.h.ContextHandler.application : Initializing Spring embedded WebApplicationContext
2018-05-05 19:55:05.356 INFO 3764 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1745 ms
2018-05-05 19:55:05.500 INFO 3764 --- [ main] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-05-05 19:55:05.503 INFO 3764 --- [ main] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-05-05 19:55:05.503 INFO 3764 --- [ main] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-05-05 19:55:05.503 INFO 3764 --- [ main] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-05-05 19:55:05.503 INFO 3764 --- [ main] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-05-05 19:55:05.507 INFO 3764 --- [ main] o.e.jetty.server.handler.ContextHandler : Started o.s.b.w.e.j.JettyEmbeddedWebAppContext@1e54b40{/,[file:///C:/Users/user/AppData/Local/Temp/jetty-docbase.8385296376636463789.8080/],AVAILABLE}
2018-05-05 19:55:05.508 INFO 3764 --- [ main] org.eclipse.jetty.server.Server : Started @3044ms
2018-05-05 19:55:05.631 INFO 3764 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-05-05 19:55:05.934 INFO 3764 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@e136d3: startup date [Sat May 05 19:55:03 IST 2018]; root of context hierarchy
2018-05-05 19:55:06.021 INFO 3764 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-05-05 19:55:06.023 INFO 3764 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-05-05 19:55:06.050 INFO 3764 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-05-05 19:55:06.050 INFO 3764 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-05-05 19:55:06.266 INFO 3764 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2018-05-05 19:55:06.284 INFO 3764 --- [ main] o.e.j.s.h.ContextHandler.application : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-05-05 19:55:06.284 INFO 3764 --- [ main] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2018-05-05 19:55:06.297 INFO 3764 --- [ main] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 13 ms
2018-05-05 19:55:06.343 INFO 3764 --- [ main] o.e.jetty.server.AbstractConnector : Started ServerConnector@835731{HTTP/1.1,[http/1.1]}{0.0.0.0:8080}
2018-05-05 19:55:06.346 INFO 3764 --- [ main] o.s.b.web.embedded.jetty.JettyWebServer : Jetty started on port(s) 8080 (http/1.1) with context path '/'
2018-05-05 19:55:06.351 INFO 3764 --- [ main] com.springexamples.demo.Application : Started Application in 3.49 seconds (JVM running for 3.886)