使用lombok示例

1.创建Maven项目，pom.xml文件内容如下

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<modelVersion>4.0.0</modelVersion>

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>2.1.2.BUILD-SNAPSHOT</version>

<relativePath/> <!-- lookup parent from repository -->

</parent>

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<groupId>com.huinongtx</groupId>

<artifactId>demolombok</artifactId>

<version>0.0.1-SNAPSHOT</version>

<packaging>jar</packaging>

<name>demolombok</name>

<description>Demo project for Spring Boot</description>

<properties>

<java.version>1.8</java.version>

</properties>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter</artifactId>

</dependency>

<dependency>

<groupId>org.projectlombok</groupId>

<artifactId>lombok</artifactId>

<version>1.16.20</version>

</dependency>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-test</artifactId>

<scope>test</scope>

</dependency>

</dependencies>

<build>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

<repositories>

<repository>

<id>spring-snapshots</id>

<name>Spring Snapshots</name>

<url>https://repo.spring.io/snapshot</url>

<snapshots>

<enabled>true</enabled>

</snapshots>

</repository>

<repository>

<id>spring-milestones</id>

<name>Spring Milestones</name>

<url>https://repo.spring.io/milestone</url>

<snapshots>

<enabled>false</enabled>

</snapshots>

</repository>

</repositories>

<pluginRepositories>

<pluginRepository>

<id>spring-snapshots</id>

<name>Spring Snapshots</name>

<url>https://repo.spring.io/snapshot</url>

<snapshots>

<enabled>true</enabled>

</snapshots>

</pluginRepository>

<pluginRepository>

<id>spring-milestones</id>

<name>Spring Milestones</name>

<url>https://repo.spring.io/milestone</url>

<snapshots>

<enabled>false</enabled>

</snapshots>

</pluginRepository>

</pluginRepositories>

</project>

2.创建实体类

包名：com.huinongtx.demolombok.demo

类名：DemoLombok

类内容：

package com.huinongtx.demolombok.demo;

import lombok.AllArgsConstructor;

import lombok.Builder;

import lombok.Data;

import lombok.NoArgsConstructor;

/**

* Created by dengdashuai on 2018/12/13.

*/

@Data

@Builder

@NoArgsConstructor

@AllArgsConstructor

public class DemoLombok {

    int code;

    String msg;

}

3.应用入口类

类名：DemolombokApplication

类内容：

package com.huinongtx.demolombok;

import com.huinongtx.demolombok.demo.DemoLombok;

import lombok.extern.slf4j.Slf4j;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

@Slf4j

public class DemolombokApplication {

public static void main(String[] args) {

// @NoArgsConstructor生成无参构造

DemoLombok demoLombok1 = new DemoLombok();

// 通过@Data生成的set方法，进行赋值

demoLombok1.setCode(0);

demoLombok1.setMsg("success");

// 通过@Data生成的toString方法，输出demoLombok1对象时调用toString方法

System.out.println(demoLombok1);

// @AllArgsConstructor通过全部参数构造

DemoLombok demoLombok2 = new DemoLombok(1,"fail");

// 输出demoLombok2对象时调用toString方法

System.out.println(demoLombok2);

// @Builder构建实例对象

DemoLombok demoLombok3 = DemoLombok.builder().code(0).msg("通过@Builder").build();

System.out.println(demoLombok3);

// @Slf4j 注入log实例

log.info("测试@Slf4j");

SpringApplication.run(DemolombokApplication.class, args);

}

}

4.运行结果