IDEA下lombok的安装和使用

    <dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.0</version>
    <scope>provided</scope>
    </dependency>

    import lombok.Data;
    
    // 给类加上@Data注解
    @Data
    public class User {
    private long id;
    private String name;
    private int age;
    }

    public class User {
    private long id;
    private String name;
    private int age;
    
    public User() {
    }
    
    public long getId() {
        return this.id;
    }
    
    public String getName() {
        return this.name;
    }
    
    public int getAge() {
        return this.age;
    }
    
    public void setId(final long id) {
        this.id = id;
    }
    
    public void setName(final String name) {
        this.name = name;
    }
    
    public void setAge(final int age) {
        this.age = age;
    }
    
    public boolean equals(final Object o) {
        if (o == this) {
            return true;
        } else if (!(o instanceof User)) {
            return false;
        } else {
            User other = (User)o;
            if (!other.canEqual(this)) {
                return false;
            } else if (this.getId() != other.getId()) {
                return false;
            } else {
                Object this$name = this.getName();
                Object other$name = other.getName();
                if (this$name == null) {
                    if (other$name == null) {
                        return this.getAge() == other.getAge();
                    }
                } else if (this$name.equals(other$name)) {
                    return this.getAge() == other.getAge();
                }
    
                return false;
            }
        }
    }
    
    protected boolean canEqual(final Object other) {
        return other instanceof User;
    }
    
    public int hashCode() {
        int PRIME = true;
        int result = 1;
        long $id = this.getId();
        int result = result * 59 + (int)($id >>> 32 ^ $id);
        Object $name = this.getName();
        result = result * 59 + ($name == null ? 43 : $name.hashCode());
        result = result * 59 + this.getAge();
        return result;
    }
    
    public String toString() {
        return "User(id=" + this.getId() + ", name=" + this.getName() + ", age=" + this.getAge() + ")";
    }
    }