Springboot Introduction Demo

Springboot Introduction Demo

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 approach to configuration, which eliminates the need for developers to define boilerplate configurations. In this way, Spring boot is committed to becoming a leader in the burgeoning field of rapid application development (rapid application development).

Features 1. Create a standalone spring application 2. Embedded Tomcat, no need to deploy war file 3. Simplifies MAVEN configuration 4. Auto-Configure Spring 5. Provides production-ready features such as indicators, health checks and external configuration 6. Absolutely no code generation and no configuration required for XML

Springboot Profile Address:

Https://baike.baidu.com/item/Spring%20Boot/20249767?fr=aladdin#1

1. Learning Springboot requires a basic knowledge of SSM

2. Springboot is developed in MAVEN environment needs MAVEN knowledge to pave the groundwork

3. Development tools (idea, Eclipse)

4. Actual development steps:

1.) Create a MAVEN project

2.) Maven is a Web project

3.) Refine the directory structure created by Maven

　　

　　　　

　　4.) Modify the Pom.xml file

1<project xmlns= "http://maven.apache.org/POM/4.0.0" xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"2xsi:schemalocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd" >3<modelVersion>4.0.0</modelVersion>4<groupId>dt55</groupId>5<artifactId>springboot1</artifactId>6<packaging>war</packaging>7<version>0.0.1-SNAPSHOT</version>8&LT;NAME&GT;SPRINGBOOT1 Maven webapp</name>9<url>http://maven.apache.org</url>Ten       One<!--the dependencies required to configure spring boot A<parent> -<groupId>org.springframework.boot</groupId> -<artifactId>spring-boot-starter-parent</artifactId> the<version>1.5.10.RELEASE</version> -</parent> -      -<dependencies> +<!--spring Boot related start-up -<dependency> +<groupId>org.springframework.boot</groupId> A<artifactId>spring-boot-starter-web</artifactId> at</dependency> -          -<!--hot Deployment-- -<dependency> -<groupId>org.springframework.boot</groupId> -<artifactId>spring-boot-devtools</artifactId> in<optional>true</optional> -<scope>true</scope> to</dependency> +          -<!--log4j-- the<dependency> *<groupId>org.springframework.boot</groupId> $<artifactId>spring-boot-starter-log4j2</artifactId>Panax Notoginseng</dependency> -          the<!--using the Jasper engine to parse the JSP-- +<dependency> A<groupId>org.apache.tomcat.embed</groupId> the<artifactId>tomcat-embed-jasper</artifactId> +<scope>provided</scope> -</dependency> $          $<!--JSP Support-- -<!--servlet dependency. - -<dependency> the<groupId>javax.servlet</groupId> -<artifactId>javax.servlet-api</artifactId>Wuyi<scope>provided</scope> the</dependency> -<dependency> Wu<groupId>javax.servlet</groupId> -<artifactId>jstl</artifactId> About</dependency> $          -<!--spring Boot integration mybatis-- -<dependency> -<groupId>org.mybatis.spring.boot</groupId> A<artifactId>mybatis-spring-boot-starter</artifactId> +<version>1.3.0</version> the</dependency> -  $<!--MySQL-- the<dependency> the<groupId>mysql</groupId> the<artifactId>mysql-connector-java</artifactId> the</dependency> -       in</dependencies> the    the<build> About<plugins> the<plugin> the<groupId>org.springframework.boot</groupId> the<artifactId>spring-boot-maven-plugin</artifactId> +<configuration> -<!--without this configuration, Devtools does not take effect-- the<fork>true</fork>Bayi</configuration> the</plugin> the</plugins> -<finalName>springboot1</finalName> -</build> the</project>

5.) Modify the port number to create a application.properties file

1 server.port=8888

6.) Configure Data source information to configure the data source in the Application.properties file

1 spring.datasource.driver-class-name=com.mysql.jdbc.Driver2 Spring.datasource.url=jdbc:mysql:///dt553 spring.datasource.username=root 4 Spring.datasource.password=root

7.) Test the code:

1 /**2 * Project name:springboot13 * File Name:FrontController.java4 * Package Name:cn.java.controller.front5 * Date: 5:21:57 pm6 * Copyright (c) 2018, Bluemobi All rights Reserved.7  *8 */9 Ten  PackageCn.java.controller.front; One  A Importjava.util.List; - ImportJava.util.Map; -  the ImportOrg.mybatis.spring.annotation.MapperScan; - Importorg.springframework.beans.factory.annotation.Autowired; - Importorg.springframework.boot.SpringApplication; - Importorg.springframework.boot.autoconfigure.EnableAutoConfiguration; + ImportOrg.springframework.context.annotation.ComponentScan; - ImportOrg.springframework.stereotype.Controller; + Importorg.springframework.web.bind.annotation.RequestMapping; A ImportOrg.springframework.web.bind.annotation.ResponseBody; at  - ImportCn.java.service.FrontService; -  - /** - * Description: <br/> - * Date: PM 5:21:57 <br/> in  *  -  * @authorChu Kaixin to  * @version +  * @see -  */ the @Controller * @EnableAutoConfiguration $@ComponentScan (value = {"Cn.java.controller.*", "Cn.java.service.impl") })Panax Notoginseng@MapperScan (value = "Cn.java.mapper") -  Public classFrontcontroller { the  + @Autowired A     PrivateFrontservice Frontservice; the  +@RequestMapping ("/index") - @ResponseBody $      PublicStringGetLogin () { $         return"Hello World!!!!!"; -     } -  the      Public Static voidMain (string[] args) { -         //start the Springboot frameWuyiSpringapplication.run (Frontcontroller.class, args); the     } -  Wu}

　　

This simple operation is much simpler than the SSM.

Let's try it.

　　

Springboot Introduction Demo