How to deploy spring boot web application on tomcat server

Question

I have created spring boot web application, but I am unable to deploy spring boot web application WAR file on tomcat and I am able to run it as java application. How to run spring boot application as web service on tomcat. I am using following code. If it is possible to run on tomcat plz help me using annotations without using web.xml and with using web.xml.

@SpringBootApplication public class Application extends SpringBootServletInitializer {      protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {        return application.sources(Application.class);     }      public static void main(String[] args) throws Exception {        SpringApplication.run(Application.class, args);     }  } 

Following code for rest controller

@RestController public class HelloWorld{     @RequestMapping(value = "/hello", method = RequestMethod.GET)    public ResponseEntity<String> get() {        return new ResponseEntity<String>("Hello World", HttpStatus.OK);    } } 

Following Pom.xml I am using

<groupId>org.springframework</groupId> <artifactId>web-service</artifactId> <version>0.1.0</version>  <parent>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-parent</artifactId>     <version>1.3.0.RELEASE</version> </parent>  <dependencies>     <dependency>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-starter-web</artifactId>     </dependency>     <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-tomcat</artifactId>         </dependency>          <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-beans</artifactId>     </dependency>         <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-webmvc</artifactId>     </dependency>     <dependency>         <groupId>com.googlecode.json-simple</groupId>         <artifactId>json-simple</artifactId>     </dependency>  </dependencies>  <properties>     <java.version>1.6</java.version> </properties>   <build>     <plugins>         <plugin>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-maven-plugin</artifactId>         </plugin>     </plugins> </build>  <repositories>     <repository>         <id>spring-releases</id>         <url>https://repo.spring.io/libs-release</url>     </repository> </repositories> <pluginRepositories>     <pluginRepository>         <id>spring-releases</id>         <url>https://repo.spring.io/libs-release</url>     </pluginRepository> </pluginRepositories> <packaging>war</packaging> 

Answer 1

Here are two good documentations on how to deploy the Spring Boot App as a war file.

You can follow this spring boot howto-traditional-deployment documentation -

Steps according to this documentation -

1. You update your application’s main class to extend SpringBootServletInitializer.

2. The next step is to update your build configuration so that your project produces a war file rather than a jar file. <packaging>war</packaging>

3. Mark the embedded servlet container dependency as provided.

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

and one more way -

See this spring io documentation which outlines how to deploy the spring boot app to an application server.

Steps -

1. Change jar packaging to war.

2. Comment out the declaration of the spring-boot-maven-plugin plugin in your pom.xml

3. Add a web entry point into your application by extending SpringBootServletInitializer and override the configure method

4. Remove the spring-boot-starter-tomcat dependency and modfiy your spring-boot-starter-web dependency to

<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> 

In your pom.xml, remove spring-beans and spring-webmvc dependencies. The spring-boot-starter-web dependency will include those dependecies.