整合SpringBoot-JPA

1. 匯入依賴：

   1. spring-boot-starter-data-jpa
   2. mysql-connector-java

2. 配置資料庫連線，jpa的表對映關係等

   spring:
     datasource:
       username: root
       password: 123456
       url: jdbc:mysql://localhost:3306/lgf
       driver-class-name: com.mysql.jdbc.Driver
     jpa:
       database: mysql
       show-sql: true
       generate-ddl: true
       hibernate:
         ddl-auto: update
         naming:
           physical-strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
   logging:
     level:
       com.cth.dao: debug
    
   

3. 實體類配置對應欄位名稱

   import javax.persistence.*;
   @Entity
   @Table()
   public class Users {
       @Id
       @GeneratedValue(strategy = GenerationType.IDENTITY)
       @Column(name = "id")
       private Integer id;
       private String name;
       private Integer age;
       private Long phone;
   }
   

4. dao介面繼承 JpaRepository 介面

   public interface UserDao extends JpaRepository<Users,Integer> {}
    
   

5. 正常的MVC操作流程