Summary of SpringBoot framework

1. The concept of SpringBoot framework

1. Disadvantages of the traditional framework

For example, the traditional SSM framework integrates MyBatis、Spring、SpringMVCthe framework, but it requires cumbersome and repetitive configuration, which makes programmers very painful

2. Spring Boot framework

The SpringBoot framework further encapsulates it on the basis of the traditional framework. It only needs some simple configuration, which saves the cumbersome configuration of the traditional framework and liberates the programmers, so that the programmers only need to focus on the business without spending experience on the configuration of the framework. , greatly improving the efficiency of programming

Second, the creation of the SpringBoot framework

1. Idea creates SpringBoot project

(1) Create a Spring Initializr project

Note : It needs to be created in a networked environment

(2), configuration related information

Note : The path of the SpringBoot startup file is best set before subcontracting, because SpringBoot scans the subdirectory of its startup file. If the startup file is in the same directory as other files, it cannot be scanned

(3) Configure dependency files

3. The structure of SpringBoot

1. Maven structure

SpringBoot is actually an aggregation project, and its parent project is mainly used for version management

4. SpringBoot integrates MyBatis

1. yml file

yml file is a configuration file format, smaller and lighter than xml and properties

2. yml configuration mybatis

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/car_express?characterEncoding=UTF-8
    driver-class-name: com.mysql.jdbc.Driver
    username: ***
    password: ***
mybatis:
  type-aliases-package: com.qf.entity
  mapper-locations: classpath:mapper/*Dao.xml

copy

Note: 1. SpringBoot spring-boot-starter-webintegrates SpringMVC when importing packages, which automatically integrates Spring 2. When importing others ORM框架, it automatically integrates them, so SpringBoot isSpring+everyting 3. It can be seen that SpringBoot is a "universal framework"

Five, SpringBoot start

1. Start by the mean method in the SpringBoot startup file

Tomcat is built into SpringBoot, so tomcat can be started through the mean method of its startup file

@SpringBootApplication
public class SwaggerDemoApplication { 
   

    public static void main(String[] args) { 
   
        SpringApplication.run(SwaggerDemoApplication.class, args);
    }

}