Springboot Project Package Deploy external Java EE containers __java

Preface

The Springboot project is in the process of developing a built-in Tomcat,jetty container, and what happens when the project needs to be released.
Only two-step steps are required to modify the startup class, Inherit Springbootservletinitializer, and override the Configure method

/**
 * Author: Meet small star
 * email:tengxing7452@163.com
 * date:17-5-10 * time
 : a.m. 10:40
 * Describe: Program Entry 
  */
@SpringBootApplication
@EnableAutoConfiguration public
class Mainspringboot extends Springbootservletinitializer {

@Override
    protected Springapplicationbuilder Configure ( Springapplicationbuilder application) {return
        application.sources (mainspringboot.class);
    }

Modifying Pom.xml files

<!--<packaging>jar</packaging>-->  
<packaging>war</packaging>  

Tomcat plug-in Dependency pack add Lifecycle privided

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

    <dependency>
      <groupId>org.apache.tomcat.embed</groupId>
      <artifactId> tomcat-embed-jasper</artifactid>
      <scope>provided</scope>
    </dependency>

Concluding remarks

The Springbootservletinitializer class implements the Webapplicationinitializer interface, while the Webapplicationinitializer has a void OnStartup ( ServletContext var1) method

void Onstartup (ServletContext var1) throws servletexception;

Springbootservletinitializer implements this Onstartup method, mainly responsible for loading the related configuration when the container is started

public void Onstartup (ServletContext servletcontext) throws Servletexception {
        This.logger = Logfactory.getlog ( This.getclass ());
        Final Webapplicationcontext Rootappcontext = This.createrootapplicationcontext (ServletContext);
        if (Rootappcontext!= null) {
            Servletcontext.addlistener (new Contextloaderlistener (rootappcontext) {
                public void Contextinitialized (Servletcontextevent event) {
                }}
            );
        else {
            this.logger.debug ("No Contextloaderlistener registered, as Createrootapplicationcontext () did Application Context ");
        }

    }

Code

            Servletcontext.addlistener (New Contextloaderlistener (rootappcontext) {public
                void contextinitialized ( Servletcontextevent event) {
                }
            });

The Servletcontextlistener interface is implemented in the

Contextloaderlistener, so that the related configuration under Springboot Project can be loaded by AddListener ().