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nanusl 第一次作业完成 SRP 课后作业
OOD之SRP课后作业，希望老师能批改一下。
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‎students/549739951/src/main/java/srp/Main.java

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package srp;
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import srp.model.Product;
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import srp.model.User;
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import srp.service.ProductService;
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import srp.service.PromotionService;
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import srp.service.UserService;
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import srp.util.RandomUtils;
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import java.util.List;
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/**
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* @version V1.0
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* @Title： Main
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* @Package： srp
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* @Description： 主程序
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* @author： 南来
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* @date： 2017-06-12 9:22
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*/
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public class Main {
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/**
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* //TODO 写的crud项目太多，作业越写越懵逼，最后我也不知道写成啥了，也不知道是否符合SRP原则。。。总之……欢迎老师和同学们批评指正！
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*/
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public static void main(String[] args) throws InterruptedException {
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//模拟业务场景
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for (; ; ) {
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start();
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Thread.sleep(Long.parseLong(RandomUtils.randomNumber(3)));
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}
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}
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private static void start() {
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//region 模拟自动装配
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UserService userService = new UserService();
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ProductService productService = new ProductService();
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PromotionService promotionService = new PromotionService();
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//endregion
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// 1 遍历商品 是否降价
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List<Product> products = productService.getProduct();
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if (null != products) {
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for (Product product : products) {
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// 2 商品降价
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if (product.getDown()) {
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// 3 获取所有关注这个产品的用户
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List<User> watchProductUsers = userService.getWatchProductUsers(product.getId());
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if (null != watchProductUsers && watchProductUsers.size() > 0)
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// 4 发送促销邮件
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for (User user : watchProductUsers)
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promotionService.promotionMail(user.getName(), user.getEmail(), product.getDesc());
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}
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}
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}
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//TODO 以上代码有明显线程问题。。。大家无视就好。。。。。¯\_(ツ)_/¯
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}
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}

‎students/549739951/src/main/java/srp/config/Config.java

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package srp.config;
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/**
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* @version V1.0
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* @Title： Config
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* @Package： srp.config
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* @Description： 配置对象 模拟读取配置文件 //todo 或者应该封装成对象？
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* @author： 南来
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* @date： 2017-06-12 9:21
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*/
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public class Config {
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/**
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* 主邮件服务器
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*/
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public static final String smtpHost = "smtp.server";
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/**
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* 备用邮件服务器
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*/
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public static final String altSmtpHost = "alt.smtp.server";
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}

‎students/549739951/src/main/java/srp/config/Constant.java

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package srp.config;
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/**
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* @version V1.0
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* @Title： Constant
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* @Package： srp.config
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* @Description： 存放项目常量，避免写死代码，便于后期维护。
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* @author： 南来
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* @date： 2017-06-12 9:17
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*/
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public class Constant {
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/**
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* from address
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*/
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public static final String EMAIL_ADMIN = "email.admin";
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/**
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* 促销邮件主题
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*/
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public static final String SUBJECT = "您关注的产品降价了";
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/**
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* 促销邮件内容
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*/
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public static final String MESSAGE = "尊敬的 %s, 您关注的产品 %s 降价了，欢迎购买!";
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}

‎students/549739951/src/main/java/srp/dao/DB.java

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package srp.dao;
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import srp.model.Product;
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import srp.model.User;
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import srp.util.RandomUtils;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* @version V1.0
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* @Title： DB
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* @Package： srp.dao
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* @Description： 伪dao层 持续输出数据 没有细分每个对象单独dao层的部分
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* @author： 南来
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* @date： 2017-06-12 9:20
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*/
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public class DB {
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/**
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* 模拟在数据库中查询用户
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*
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* @return 所有用户
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*/
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public List<User> getUsers() {
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List<User> users = new ArrayList<>();
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for (int i = 0; i < 10; i++) {
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User user = new User();
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user.setName(RandomUtils.randomName());
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user.setEmail(RandomUtils.randomMail());
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//region 模拟关注商品
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try {
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List<Product> products = getProducts();
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if (null != products && products.size() > 0)
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user.setWatchProductId(RandomUtils.randomOne(products).getId());
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} catch (IOException e) {
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e.printStackTrace();
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}
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//endregion
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users.add(user);
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}
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return users;
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}
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/**
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* @param productId 商品id
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* @return 所有关注该商品的用户集
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*/
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public List<User> getWatchProductUsers(String productId) {
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if (0 == productId.length()) return null;
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List<User> users = getUsers();
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List<User> temp = new ArrayList<>();
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for (User user : users) {
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if (null != user.getWatchProductId() && productId.equals(user.getWatchProductId()))
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temp.add(user);
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}
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return temp;
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}
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/**
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* 模拟在数据库中查询商品
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*
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* @return 所有商品
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*/
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public List<Product> getProducts() throws IOException {
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List<Product> products = new ArrayList<>();
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try (BufferedReader br = new BufferedReader(new FileReader(new File("D:\\product_promotion.txt")))) {
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String temp;
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while (null != (temp = br.readLine())) {
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String[] data = temp.split(" ");
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Product product = new Product();
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product.setId(data[0]);
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product.setDesc(data[1]);
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//region 模拟降价
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product.setDown(RandomUtils.randomBoolean());
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//endregion
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products.add(product);
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}
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}
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return products;
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}
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}

‎students/549739951/src/main/java/srp/model/Email.java

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package srp.model;
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/**
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* @version V1.0
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* @Title： Email
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* @Package： srp.model
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* @Description： Email 对象
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* @author： 南来
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* @date： 2017-06-12 10:32
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*/
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public class Email {
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/**
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* from address
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*/
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private String from;
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/**
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* to address
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*/
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private String to;
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/**
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* 主题
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*/
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private String subject;
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/**
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* 内容
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*/
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private String content;
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public String getFrom() {
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return from;
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}
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public void setFrom(String from) {
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this.from = from;
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}
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public String getTo() {
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return to;
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}
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public void setTo(String to) {
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this.to = to;
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}
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public String getSubject() {
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return subject;
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}
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public void setSubject(String subject) {
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this.subject = subject;
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}
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public String getContent() {
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return content;
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}
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public void setContent(String content) {
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this.content = content;
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}
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@Override
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public String toString() {
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return "Email{" +
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"from='" + from + '\'' +
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", to='" + to + '\'' +
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", subject='" + subject + '\'' +
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", content='" + content + '\'' +
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'}';
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}
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}

‎students/549739951/src/main/java/srp/model/Product.java

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package srp.model;
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/**
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* @version V1.0
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* @Title： Product
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* @Package： srp.model
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* @Description： 商品对象
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* @author： 南来
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* @date： 2017-06-12 9:46
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*/
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public class Product {
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/**
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* 商品主键
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*/
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private String Id;
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/**
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* 商品描述
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*/
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private String Desc;
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/**
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* 是否降价
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*/
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private boolean down;
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public String getId() {
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return Id;
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}
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public void setId(String id) {
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Id = id;
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}
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public String getDesc() {
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return Desc;
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}
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public void setDesc(String desc) {
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Desc = desc;
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}
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public boolean getDown() {
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return down;
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}
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public void setDown(boolean down) {
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this.down = down;
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}
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@Override
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public String toString() {
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return "Product{" +
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"Id='" + Id + '\'' +
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", Desc='" + Desc + '\'' +
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", down='" + down + '\'' +
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'}';
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}
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}

‎students/549739951/src/main/java/srp/model/User.java

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package srp.model;
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/**
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* @version V1.0
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* @Title： User
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* @Package： srp.model
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* @Description： 用户对象
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* @author： 南来
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* @date： 2017-06-12 10:07
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*/
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public class User {
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/**
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* 用户名
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*/
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private String name;
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/**
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* e-mail
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*/
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private String email;
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/**
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* 关注的商品Id
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*/
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private String watchProductId;
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getEmail() {
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return email;
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}
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public void setEmail(String email) {
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this.email = email;
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}
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public String getWatchProductId() {
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return watchProductId;
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}
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public void setWatchProductId(String watchProductId) {
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this.watchProductId = watchProductId;
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}
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@Override
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public String toString() {
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return "User{" +
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"name='" + name + '\'' +
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", email='" + email + '\'' +
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", watchProductId='" + watchProductId + '\'' +
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'}';
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}
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}

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