Learn Spring Boot 1

Spring initialization

• spring-boot-starter-web
• spring-boot-starter-data-jpa
• spring-boot-devtools
• mysql-connector-java
• lombok

Connect to database

in the resource/application.properties, we can config the hibernate connection for mysql

spring.jpa.hibernate.ddl-auto=create-drop
spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=username
spring.datasource.password=password
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.show-sql= true

Simple API

To build a simple api, we need to add two annotaion to the main

• RestController
• @GetMapping/@PostMapping/ others

@SpringBootApplication
@RestController
public class PpfaSpringApplication {

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

 @GetMapping
 public String hello() {
  return "Hello World";
 }
}