lombok 之让你的开发效率翻倍

1.安装lombok

下载lombok.jar https://projectlombok.org/

执行 java -jar lombok.jar

选择你要你要安装的ide

点击install

2.lombok 编写代码

mvn 引入lombok .jar

<dependency>
	<groupId>org.projectlombok</groupId>
	<artifactId>lombok</artifactId>
	<version>1.16.16</version>
	<scope>provided</scope>
</dependency>

编写代码

import lombok.Data;

@Data
public class Bean {

    private Integer id;
    private String beanName;
    private String beanPackage;
}

eclipse 类展开显示，set get,equal,hashcode方法自动生成。very good,我只需要关注属性就可以，有点类似现在的groovy

同时，不翻译了，谁想翻译可以留言，反正感觉很NX，试试就知道

val

定义属性，可以理解为javascript中的var 定义一样

@NonNull

在属性类型前加@NonNull 会自动判断这个属性是否为空

@Cleanup

如果是流操作的话，会自动flush 并且close这个流.

@Getter / @Setter

在类的属性前加@Getter / @Setter，会定义set，get方法

@ToString，

生成toString 方法

@EqualsAndHashCode

生成实现 equals 和hashcode方法.

@NoArgsConstructor, @RequiredArgsConstructor and @AllArgsConstructor

Constructors made to order: Generates constructors that take no arguments, one argument per final / non-null field, or one argument for every field.

@Data

All together now: A shortcut for @ToString, @EqualsAndHashCode, @Getter on all fields, and @Setter on all non-final fields, and @RequiredArgsConstructor!

@Value

Immutable classes made very easy.

@Builder

... and Bob's your uncle: No-hassle fancy-pants APIs for object creation!

@SneakyThrows

To boldly throw checked exceptions where no one has thrown them before!

@Synchronized

synchronized done right: Don't expose your locks.

@Getter(lazy=true)

Laziness is a virtue!

@Log

Captain's Log, stardate 24435.7: "What was that line again?"