Spring Boot w JPA：将 @Entity 移动到不同的包

使用Spring Boot和JPA可以方便地开发和管理数据库应用程序。在使用JPA时，通常将实体类标记为@Entity，以便JPA能够自动创建相应的表格和字段。然而，当实体类过多时，将所有的实体类放在同一个包下可能会变得混乱不堪。因此，我们可以将实体类移动到不同的包中，以提高代码的可维护性和可读性。

com.example.entity
├── customer
│   └── Customer.java
├── order
│   └── Order.java
└── product
    └── Product.java

spring.jpa.entity-scan=com.example.entity

spring.jpa.entity-scan=com.example.entity

java
package com.example.entity.order;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Order {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    // other attributes and relationships
    // getters and setters
}
package com.example.entity.product;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    // other attributes and relationships
    // getters and setters
}
package com.example.entity.customer;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Customer {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    // other attributes and relationships
    // getters and setters
}