听说你用 java new 了一个女朋友

前言

看到网上，好多人在秀自己 new 的 girl ！！
本文做一个小练习：
读取 json 文件，封装、继承、接口等java 基础的回顾！！

项目结构

pom.xml

<?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>

    <groupId>org.feng</groupId>
    <artifactId>girl_friend_demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.54</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.29</version>
        </dependency>
    </dependencies>

</project>

girl.json

{
  "小美": {
    "age": 25,
    "height": 164.32,
    "weight": 47.34,
    "meetCounts": 7,
    "birthday": "1997-12-22",
    "beautiful": true,
    "hobbies": "看,看电影,玩游戏",
    "infos": "不喜欢吃辣"
  }
}

log4j.properties

log4j.rootLogger=debug, console

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{HH:mm:ss,SSS} %-5p %-60c %x - %m%n

AbstractPeople

package org.feng.entity;

import lombok.Builder;
import lombok.Data;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.time.LocalDate;
import java.util.Set;

/**
 * Created by Feng on 2020/2/14 12:30
 * CurrentProject's name is girl_friend_demo
 * 人的抽象：抽取公共属性
 * @author Feng
 */
@Data
public abstract class AbstractPeople {
    private static final Logger LOGGER = LoggerFactory.getLogger(AbstractPeople.class);
    /**名字*/
    private String name;
    /**年龄*/
    private Integer age;
    /**身高*/
    private Double height;
    /**体重*/
    private Double weight;
    /**生日*/
    private LocalDate birthday;
    /**爱好*/
    private String[] hobbies;
    /**其他信息*/
    private String[] infos;

    /**认识的男生*/
    protected Set<Boy> boys;
    /**认识的女生*/
    protected Set<Girl> girls;

    public AbstractPeople(String name){
        this.name = name;
    }

    /**打电话*/
    public void call(AbstractPeople people){
        // TODO 打电话的业务
        LOGGER.info("[{}] 给 [{}] 打了一个电话！", this.name, people.getName());
    }

    /**闲逛*/
    public abstract void hangout(AbstractPeople people);

    /**交朋友*/
    public void makeFriend(AbstractPeople people){
        if(people instanceof Boy){
            boys.add((Boy)people);
        }

        if(people instanceof Girl){
            girls.add((Girl)people);
        }

        LOGGER.info("[{}] 和 [{}] 交朋友了！", this.name, people.getName());
    }

    /**约会*/
    public abstract void haveMeet(AbstractPeople people);
}

Boy

package org.feng.entity;

import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;

import java.io.Serializable;
import java.util.HashSet;
import java.util.TreeSet;

/**
 * Created by Feng on 2020/2/14 12:30
 * CurrentProject's name is girl_friend_demo
 * @author Feng
 */
@EqualsAndHashCode(callSuper = true)
@Getter
@Setter
public class Boy extends AbstractPeople implements Serializable, Comparable<Boy> {
    private static final long serialVersionUID = 3244522984736192414L;

    /**颜值指数：越高越好*/
    private Integer coolCounts = 0;

    public Boy(String name) {
        super(name);
        girls = new TreeSet<>();
        boys = new HashSet<>();
    }


    @Override
    public int compareTo(Boy boy) {
        return (int)((this.coolCounts + boy.getHeight() - boy.getAge()) - (boy.coolCounts + boy.getHeight() - boy.getAge()));
    }

    @Override
    public void hangout(AbstractPeople people) {

    }

    @Override
    public void haveMeet(AbstractPeople people) {

    }
}

Girl

package org.feng.entity;

import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;

import java.io.Serializable;
import java.util.HashSet;
import java.util.TreeSet;

/**
 * Created by Feng on 2020/2/14 12:31
 * CurrentProject's name is girl_friend_demo
 * @author Feng
 */
@ToString(callSuper = true)
@EqualsAndHashCode(callSuper = true)
@Setter
@Getter
public class Girl extends AbstractPeople implements Serializable, Comparable<Girl> {
    private static final long serialVersionUID = -2528133621953391589L;

    /**
     * 是否漂亮
     */
    private Boolean beautiful = true;
    /**
     * 约会次数
     */
    private Integer meetCounts = 0;

    /**认识的男生*/

    public Girl(String name) {
        super(name);
        boys = new TreeSet<>();
        girls = new HashSet<>();
    }

    @Override
    public int compareTo(Girl girl) {
        return (int)((this.meetCounts + this.getHeight()) - (girl.meetCounts + girl.getHeight()));
    }

    @Override
    public void hangout(AbstractPeople people) {

    }

    @Override
    public void haveMeet(AbstractPeople people) {

    }
}

Client

import com.alibaba.fastjson.JSONObject;
import org.feng.entity.Boy;
import org.feng.entity.Girl;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.time.LocalDate;

/**
 * Created by Feng on 2020/2/14 13:12
 * CurrentProject's name is girl_friend_demo
 * @author Feng
 */
public class Client {

    /**
     * 初始化数据：读取 json
     */
    private static JSONObject init(){
        String json = readJsonFile("D:\\jee-2019-7-idea-maven-workspace\\girl_friend_demo\\src\\main\\resources" +
                "\\girl.json");

        return JSONObject.parseObject(json);
    }


    public static void main(String[] args) {
        JSONObject jsonObject = init();
        JSONObject tempObject = JSONObject.parseObject(jsonObject.get("小美").toString());

        Boy boy = new Boy("你家宝宝");
        Girl girl = new Girl("小美");
        girl.setHeight(tempObject.getDouble("height"));
        girl.setWeight(tempObject.getDouble("weight"));
        girl.setAge(tempObject.getInteger("age"));
        girl.setHobbies(tempObject.getString("hobbies").split(","));
        girl.setBirthday(LocalDate.parse(tempObject.getString("birthday")));
        girl.setBeautiful(tempObject.getBoolean("beautiful"));
        girl.setMeetCounts(tempObject.getInteger("meetCounts"));
        girl.setInfos(tempObject.getString("infos").split(","));

        System.out.println(girl);

        boy.makeFriend(girl);
        boy.call(girl);
        boy.haveMeet(girl);
        boy.hangout(girl);
    }

    private static String readJsonFile(String fileName) {
        String jsonStr;
        try {
            File jsonFile = new File(fileName);
            FileReader fileReader;
            fileReader = new FileReader(jsonFile);

            Reader reader = new InputStreamReader(new FileInputStream(jsonFile), StandardCharsets.UTF_8);
            int ch = 0;
            StringBuilder sb = new StringBuilder();
            while ((ch = reader.read()) != -1) {
                sb.append((char) ch);
            }
            fileReader.close();
            reader.close();
            jsonStr = sb.toString();
            return jsonStr;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}

运行结果

Girl(super=AbstractPeople(name=小美, age=25, height=164.32, weight=47.34, birthday=1997-12-22, hobbies=[看, 看电影, 玩游戏], infos=[不喜欢吃辣], boys=[], girls=[]), beautiful=true, meetCounts=7)
14:10:42,505 INFO  org.feng.entity.AbstractPeople                                - [你家宝宝] 和 [小美] 交朋友了！
14:10:42,506 INFO  org.feng.entity.AbstractPeople                                - [你家宝宝] 给 [小美] 打了一个电话！

Process finished with exit code 0

这就 new 好了，虽然有点 Low，但是，咦，我想说啥来着！！！？？？