完成支持领域的开发

lottery-domain/pom.xml

@@ -10,6 +10,10 @@
     <modelVersion>4.0.0</modelVersion>
     <packaging>jar</packaging>
     <dependencies>
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-all</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
@@ -30,13 +34,16 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.58</version>
             <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-tx</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+        </dependency>
     </dependencies>
 
     <artifactId>lottery-domain</artifactId>

lottery-domain/src/main/java/cn/happy/lottery/domain/award/service/factory/GoodsConfig.java

@@ -9,7 +9,9 @@ import cn.happy.lottery.domain.award.service.goods.impl.RedeemCodeGoods;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.Resource;
+import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 

lottery-domain/src/main/java/cn/happy/lottery/domain/support/ids/IIdGenerator.java

+package cn.happy.lottery.domain.support.ids;
+
+/**
+ * @author Happy
+ * @description: 生成ID接口
+ * @date 2022/2/20
+ */
+public interface IIdGenerator {
+
+    /**
+     * 获取ID，目前有两种实现方式
+     * 1. 雪花算法，用于生成单号
+     * 2. 日期算法，用于生成活动编号类，特性是生成数字串较短，但指定时间内不能生成太多
+     * 3. 随机算法，用于生成策略ID
+     *
+     * @return ID
+     */
+    long nextId();
+
+}

lottery-domain/src/main/java/cn/happy/lottery/domain/support/ids/IdContext.java

+package cn.happy.lottery.domain.support.ids;
+
+import cn.happy.lottery.common.Constants;
+import cn.happy.lottery.domain.support.ids.impl.RandomNumeric;
+import cn.happy.lottery.domain.support.ids.impl.ShortCode;
+import cn.happy.lottery.domain.support.ids.impl.SnowFlake;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @author Happy
+ * @description: Id 策略模式上下文配置「在正式的完整的系统架构中
+ * ID 的生成会有单独的服务来完成，其他服务来调用 ID 生成接口即可」
+ * 这里采用注解方式来进行自动装配，可以去了解 @Configuration 和 @Bean 的实现原理
+ * @date 2022/2/20
+ */
+@Configuration
+public class IdContext {
+
+    @Bean
+    public Map<Constants.Ids, IIdGenerator> idGenerator(SnowFlake snowFlake, RandomNumeric randomNumeric, ShortCode shortCode) {
+        Map<Constants.Ids, IIdGenerator> idGeneratorMap = new HashMap<>();
+        idGeneratorMap.put(Constants.Ids.SnowFlake, snowFlake);
+        idGeneratorMap.put(Constants.Ids.ShortCode, shortCode);
+        idGeneratorMap.put(Constants.Ids.RandomNumeric, randomNumeric);
+        return idGeneratorMap;
+    }
+
+}

lottery-domain/src/main/java/cn/happy/lottery/domain/support/ids/impl/RandomNumeric.java

+package cn.happy.lottery.domain.support.ids.impl;
+
+import cn.happy.lottery.domain.support.ids.IIdGenerator;
+import org.springframework.stereotype.Component;
+import org.apache.commons.lang3.RandomStringUtils;
+
+/**
+ * @author Happy
+ * @description: 工具类生成 org.apache.commons.lang3.RandomStringUtils
+ * @date 2022/2/20
+ */
+@Component
+public class RandomNumeric implements IIdGenerator {
+
+    @Override
+    public long nextId() {
+        return Long.parseLong(RandomStringUtils.randomNumeric(11));
+    }
+
+}

lottery-domain/src/main/java/cn/happy/lottery/domain/support/ids/impl/ShortCode.java

+package cn.happy.lottery.domain.support.ids.impl;
+
+import cn.happy.lottery.domain.support.ids.IIdGenerator;
+import org.springframework.stereotype.Component;
+
+import java.util.Calendar;
+import java.util.Random;
+
+/**
+ * @author Happy
+ * @description: 短码生成策略，仅支持很小的调用量，用于生成活动配置类编号，保证全局唯一
+ * @date 2022/2/20
+ */
+@Component
+public class ShortCode implements IIdGenerator {
+
+    @Override
+    public synchronized long nextId() {
+        Calendar calendar = Calendar.getInstance();
+        int year = calendar.get(Calendar.YEAR);
+        int week = calendar.get(Calendar.WEEK_OF_YEAR);
+        int day = calendar.get(Calendar.DAY_OF_WEEK);
+        int hour = calendar.get(Calendar.HOUR_OF_DAY);
+        StringBuilder idStr = new StringBuilder();
+        idStr.append(year - 2020);
+        idStr.append(hour);
+        idStr.append(String.format("%02d", week));
+        idStr.append(day);
+        idStr.append(String.format("%03d", new Random().nextInt(1000)));
+
+        return Long.parseLong(idStr.toString());
+    }
+}

lottery-domain/src/main/java/cn/happy/lottery/domain/support/ids/impl/SnowFlake.java

+package cn.happy.lottery.domain.support.ids.impl;
+
+import cn.happy.lottery.domain.support.ids.IIdGenerator;
+import cn.hutool.core.lang.Snowflake;
+import cn.hutool.core.util.IdUtil;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.PostConstruct;
+import cn.hutool.core.net.NetUtil;
+
+/**
+ * @author Happy
+ * @description: hutool 工具包下的雪花算法
+ * 15位雪花算法推荐：https://github.com/yitter/idgenerator/blob/master/Java/source/src/main/java/com/github/yitter/core/SnowWorkerM1.java
+ * @date 2022/2/20
+ */
+
+@Component
+public class SnowFlake implements IIdGenerator {
+
+    private Snowflake snowflake;
+
+    @PostConstruct
+    public void init() {
+        // 0 ~ 31位，可以采用配置的方式使用
+        long workerId;
+        try {
+            workerId = NetUtil.ipv4ToLong(NetUtil.getLocalhostStr());
+        } catch (Exception e) {
+            workerId = NetUtil.getLocalhostStr().hashCode();
+        }
+
+        workerId = workerId >> 16 & 31;
+
+        long datacenterId = 1L;
+        snowflake = IdUtil.createSnowflake(workerId, datacenterId);
+    }
+
+    @Override
+    public long nextId() {
+        return snowflake.nextId();
+    }
+}

lottery-interfaces/src/test/java/cn/happy/lottery/test/domain/SupportTest.java

+package cn.happy.lottery.test.domain;/**
+ * @description:  
+ * @author Happy 
+ * @date 2022/2/20
+*/ public class SupportTest {
+    public static void main(String[] args){
+        
+    }
+}