Introduction to springboot
Spring Boot is a new framework provided by the Pivotal team, designed to simplify the initial setup and development of new Spring applications. The framework uses a specific way to configure, so that developers no longer need to define boilerplate configuration. In this way, Boot aims to be a leader in the burgeoning field of rapid application development.
springboot features
Ø Create a standalone spring application
Ø Embed tomcat, no need to deploy war file
Ø Simplified maven configuration
Ø Provide build-ready functions such as embedded server, security, heartbeat check, external configuration, etc.
Ø Emergency use out of the box, no code generation, no need to configure xml files.
Development environment preparation
Ø Development environment jdk1.7 or 1.8
Ø Development tool Eeclipse4.2
Ø Project management tool apache-maven-3.3.9
Create a workspace
Use eclipse to create a new maven web project project named: spring-boot-hello
After successful creation, the directory structure is as follows:
Introduce spring-boot jar package in pom.xml
<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>cn.mybatis-demo</groupId>
<artifactId>springboot-hello</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-helloMaven Webapp</name>
<url>http://maven.apache.org</url>
<!-- Introduce the spring-boot parent node, no conditional version number is required, spring boot will automatically select the appropriate version to add the jar package -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
</parent>
<dependencies>
<!-- Introduce spring-boot-web jar package -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Introduce spring-boot-test test package -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
</dependencies>
<build>
<finalName>springboot</finalName>
<plugins>
<!-- Introduce spring tomcat plug-in package -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Write the HelloWorldController class
/**
* Equivalent to @Controler @ResponseBody using @RestController
* @author Administrator
*
*/
@RestController
public class HelloWorldController {
/**
* Request mapping: http://localhost:8080/hello
* @return
*/
@RequestMapping("/hello")
public String hello() {
System.out.println("hello...........");
return"hello";
}
}Write the spring-boot startup class
@SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
Select the startup class, right-click, select java application to run and start spring-boot. The default startup tomcat port is 8080
The startup result is as follows:
Test Results
