sprintboot 配置 lombok

椰子灰發表於2024-07-21

springboot 3.x

首先在springboot專案的pom.xml中匯入

<!--        lombok,可以簡化實體類宣告-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>

載入完成後就可以在實體類中使用了

原始碼

package com.example.pojo;

public class User {

    private Integer id;
    private String name;
    private Short age;
    private Short gender;
    private String phone;

    public User() {
    }

    public User(Integer id, String name, Short age, Short gender, String phone) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.phone = phone;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Short getAge() {
        return age;
    }

    public void setAge(Short age) {
        this.age = age;
    }

    public Short getGender() {
        return gender;
    }

    public void setGender(Short gender) {
        this.gender = gender;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", age=" + age +
                ", gender=" + gender +
                ", phone='" + phone + '\'' +
                '}';
    }
}

使用 lombok後

其中@data等價於以下四個註解

@Getter            get方法
@Setter            set方法
@ToString           tostring方法
@EqualsAndHashCode     equals和hashcode方法

package com.example.pojo;

import lombok.*;

//用於存放實體類
@Data
@NoArgsConstructor      //無參構造
@AllArgsConstructor     //全參構造
public class User {

    private Integer id;
    private String name;
    private Short age;
    private Short gender;
    private String phone;

}

可以看出使用 lombok 註解後程式碼簡化了很多

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