178. Spring Boot lombok: use

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foreword

In the previous article, I installed Lombok . For those who haven't installed it yet, you need to install it first, otherwise you won't be able to experience the magical effects brought by Lombok . Installation is not the purpose, use is the last word. This article will introduce it from the perspective of use.

Imprint

（1）spring boot： 1.5.8；
（2）lombok：1.16.18；

1. Preparation

1.1 Install Lombok

For specific installation steps, see the previous article.

1.2 Prepare a simple spring boot project

Just take a spring boot project, if you don't know it yet, start with the hello world of spring boot .

2. Using Lombok in spring boot

2.1 New dependencies

Add the dependency of lombok to the pom.xml file of the project :

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

2.2 Add a Girl entity class

( 1 ) Code not using Lombok

public class Girl {
       private int id;//Primary key.
       private String name;//姓名.
       private int age;//年龄，女孩的年龄怎么能随便告诉你呢!
       private double weight;//体重. 这个问女孩，女孩会￣へ￣的.
       public int getId() {
              return id;
       }
       public void setId(int id) {
              this.id = id;
       }
       public String getName() {
              return name;
       }
       public void setName(String name) {
              this.name = name;
       }
       public int getAge() {
              returnage;
       }
       public void setAge(int age) {
              this.age = age;
       }
       public double getWeight() {
              return weight;
       }
       public void setWeight(double weight) {
              this.weight = weight;
       }
}

在之前的代码中需要手动生成getter and setter代码。

（2）使用Lombok的代码

import lombok.Data;
 
@Data
public class Girl {
       private int id;//主键.
       private String name;//姓名.
       private int age;//年龄，女孩的年龄怎么能随便告诉你呢!
       private double weight;//体重. 这个问女孩，女孩会￣へ￣的.
}

这是什么鬼，好干净好简单哦，这就是Lombok带给我们的。这里在也看不到长长的getter and setter方法了。

2.3 Girl调用

那么使用Lombok之后的属性是否能被getter和setter呢？好想看看那个女孩的体重哦（你想看的不是体重吧，老实说是不是Cup Size），看下调用的代码：

Girl girl = new Girl();
girl.setId(1);
girl.setName("Angelababy");
girl.setAge(29);
girl.setWeight(45);//单位：千克
System.out.println("姓名："+girl.getName()+"，年龄："+girl.getAge()+"，体重："+girl.getWeight());

可以获取到，这样使用Lombok之后，就会使得代码变得清爽很多。对于Lombok到这里就结束了，但是Lombok的还需要大家自己去挖掘，这艰巨的任务还是留给你们吧，我还是去new girl()。

178. Spring Boot lombok: use

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