The Hellocontroller of Springboot

1. Build the Environment

1.1 Create a new MAVEN project, the next step

1.2 Open the Pom file, first add <parent></parent> tags:

  <Parent>    <groupId>Org.springframework.boot</groupId>    <Artifactid>Spring-boot-starter-parent</Artifactid>    <version>1.5.0.RELEASE</version>  </Parent>

This dependency allows us to choose the most appropriate version number of the jar package we added, eliminating our choice of the version number.

1.3 Add the JDK version number to the <properties></properties> tab:

< java.version >1.7</java.version>

Default is 1.6

1.4 Add one more dependency

    < Dependency >        < groupId >org.springframework.boot</groupId>        <  Artifactid>spring-boot-starter-web</artifactid>    </dependency>    

  This dependency provides us with a dependency package such as MVC, AOP, and so on.

2. Create a startup class

  2.1 open App.java, add @springbootapplication annotations to this class, create a startup class 
 2.2 Remove the code from the Main method, Replace with Springapplication.run (App.class, args), where the program starts. 
  

 Package Cn.sto; Import org.springframework.boot.SpringApplication; Import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication  Public class App {    publicstaticvoid  main (string[] args)    {        Springapplication.run (App.class, args);}    }

3. Create Controller

 Package Cn.sto; Import org.springframework.web.bind.annotation.RequestMapping; Import Org.springframework.web.bind.annotation.RestController; @RestController  Public class Hellocontroller {    @RequestMapping ("/hello")    public  String Hello () {         return "Hello";    }}

4. Browser Testing

Browser input Http://127.0.0.1:8080/hello

Springboot comes with Tomcat, the default port number is 8080

　　

The Hellocontroller of Springboot