1.实体类注解使用到的库lombok这一Java类库使用时需要添加依赖如下还要安装lombok插件idea自带dependency groupIdorg.projectlombok/groupId artifactIdlombok/artifactId /dependency注解Getter Setter EqualsAndHashCodeData包含了Getter Setter EqualsAndHashCode三个注解NoArgsConstructor AllArgsConstructor作用当添加注解后lombok会在编译时自动生成相应的代码2.使用lombok注解写的实体类示例package com.example.ecommerceplatform.pojo.entity; import com.example.ecommerceplatform.common.enumeration.OrdersStatusEnum; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.time.LocalDateTime; Data ---自动生成gettersetterequalsandHashCode函数 NoArgsConstructor ---自动生成无参构造 AllArgsConstructor ---自动生成全参构造 public class Orders { private Long id; private String orderNo; private Long buyerId; private Long sellerId; private float amount; private OrdersStatusEnum status; private LocalDateTime createTime; private LocalDateTime updateTime; }