Java中Lombok工具库使用的技术指南

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.30</version>
    <scope>provided</scope>
</dependency>

import lombok.Getter;
import lombok.Setter;

public class User {
    @Getter @Setter
    private String name;

    @Getter @Setter
    private int age;
}

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

public int getAge() { return age; }
public void setAge(int age) { this.age = age; }

import lombok.AllArgsConstructor;
import lombok.NoArgsConstructor;
import lombok.RequiredArgsConstructor;

@NoArgsConstructor
@AllArgsConstructor
@RequiredArgsConstructor
public class User {
    private final String id;
    private String name;
    private int age;
}

import lombok.EqualsAndHashCode;
import lombok.ToString;

@ToString
@EqualsAndHashCode
public class User {
    private String name;
    private int age;
}

import lombok.Data;

@Data
public class User {
    private String name;
    private int age;
}

import lombok.Builder;
import lombok.ToString;

@Builder
@ToString
public class User {
    private String name;
    private int age;
    private String address;
}

User user = User.builder()
               .name("John")
               .age(30)
               .address("New York")
               .build();
System.out.println(user);

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class LoggingExample {
    public static void main(String[] args) {
        log.info("This is an info log.");
        log.error("This is an error log.");
    }
}

import lombok.Getter;
import lombok.Setter;
import lombok.experimental.Accessors;

@Getter
@Setter
@Accessors(chain = true)
public class User {
    private String name;
    private int age;
}

User user = new User().setName("John").setAge(30);
System.out.println(user.getName());

import lombok.AccessLevel;
import lombok.Getter;
import lombok.Setter;

public class User {
    @Getter
    @Setter(AccessLevel.PRIVATE)
    private String name;
}

import lombok.Value;

@Value
public class ImmutableUser {
    String name;
    int age;
}

import lombok.SneakyThrows;

public class SneakyThrowsExample {
    @SneakyThrows
    public void readFile() {
        throw new Exception("Checked Exception");
    }
}

import lombok.Value;
import lombok.With;

@Value
public class User {
    @With private String name;
    private int age;
}

User user1 = new User("John", 30);
User user2 = user1.withName("Doe");

​​​​​​​System.out.println(user1); // User(name=John, age=30)
System.out.println(user2); // User(name=Doe, age=30)