1、idea安装插件lombok
2、导入jar包依赖
<!-- lombok插件-->
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
</dependency>
3、标记注解
package com.tan.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
//实体类
@Data
@AllArgsConstructor//有参构造注解
@NoArgsConstructor//无参构造注解
public class User {
private int id;
private String name;
private String password;
}