小傅哥 | 重学 Java 设计模式：实战工厂方法模式

.gitignore

+/itstack-demo-design-1-00/itstack-demo-design-1-00.iml
+/itstack-demo-design-1-01/itstack-demo-design-1-01.iml
+/itstack-demo-design-1-02/itstack-demo-design-1-02.iml

itstack-demo-design-1-00/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">
+    <parent>
+        <artifactId>itstack-demo-design</artifactId>
+        <groupId>org.itstack</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>itstack-demo-design-1-00</artifactId>
+
+
+</project>
\ No newline at end of file

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/card/IQiYiCard.java

+package org.itstack.demo.design.card;
+
+public class IQiYiCard {
+
+
+
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/card/IQiYiCardService.java

+package org.itstack.demo.design.card;
+
+/**
+ * 模拟爱奇艺会员卡服务
+ */
+public class IQiYiCardService {
+
+    public void grantToken(String bindMobileNumber, String cardId) {
+        System.out.println("模拟发放爱奇艺会员卡一张：" + bindMobileNumber + "，" + cardId);
+    }
+
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/coupon/CouponInfo.java

+package org.itstack.demo.design.coupon;
+
+public class CouponInfo {
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/coupon/CouponResult.java

+package org.itstack.demo.design.coupon;
+
+public class CouponResult {
+
+    private String code; // 编码
+    private String info; // 描述
+
+    public CouponResult(String code, String info) {
+        this.code = code;
+        this.info = info;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getInfo() {
+        return info;
+    }
+
+    public void setInfo(String info) {
+        this.info = info;
+    }
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/coupon/CouponService.java

+package org.itstack.demo.design.coupon;
+
+/**
+ * 模拟优惠券服务
+ */
+public class CouponService {
+
+    public CouponResult sendCoupon(String uId, String couponNumber, String uuid) {
+        System.out.println("模拟发放优惠券一张：" + uId + "," + couponNumber + "," + uuid);
+        return new CouponResult("0000", "发放成功");
+    }
+
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/goods/DeliverReq.java

+package org.itstack.demo.design.goods;
+
+public class DeliverReq {
+
+    private String userName;              // 用户姓名
+    private String userPhone;             // 用户手机
+    private String sku;                   // 商品SKU
+    private String orderId;               // 订单ID
+    private String consigneeUserName;     // 收货人姓名
+    private String consigneeUserPhone;    // 收货人手机
+    private String consigneeUserAddress;  // 收获人地址
+
+    public String getUserName() {
+        return userName;
+    }
+
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+
+    public String getUserPhone() {
+        return userPhone;
+    }
+
+    public void setUserPhone(String userPhone) {
+        this.userPhone = userPhone;
+    }
+
+    public String getSku() {
+        return sku;
+    }
+
+    public void setSku(String sku) {
+        this.sku = sku;
+    }
+
+    public String getOrderId() {
+        return orderId;
+    }
+
+    public void setOrderId(String orderId) {
+        this.orderId = orderId;
+    }
+
+    public String getConsigneeUserName() {
+        return consigneeUserName;
+    }
+
+    public void setConsigneeUserName(String consigneeUserName) {
+        this.consigneeUserName = consigneeUserName;
+    }
+
+    public String getConsigneeUserPhone() {
+        return consigneeUserPhone;
+    }
+
+    public void setConsigneeUserPhone(String consigneeUserPhone) {
+        this.consigneeUserPhone = consigneeUserPhone;
+    }
+
+    public String getConsigneeUserAddress() {
+        return consigneeUserAddress;
+    }
+
+    public void setConsigneeUserAddress(String consigneeUserAddress) {
+        this.consigneeUserAddress = consigneeUserAddress;
+    }
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/goods/GoodsInfo.java

+package org.itstack.demo.design.goods;
+
+public class GoodsInfo {
+
+
+
+}

itstack-demo-design-1-00/src/main/java/org/itstack/demo/design/goods/GoodsService.java

+package org.itstack.demo.design.goods;
+
+import com.alibaba.fastjson.JSON;
+
+/**
+ * 模拟实物商品服务
+ */
+public class GoodsService {
+
+    public Boolean deliverGoods(DeliverReq req) {
+        System.out.println("模拟发货实物商品一个：" + JSON.toJSONString(req));
+        return true;
+    }
+
+}

itstack-demo-design-1-01/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">
+    <parent>
+        <artifactId>itstack-demo-design</artifactId>
+        <groupId>org.itstack</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>itstack-demo-design-1-01</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.itstack</groupId>
+            <artifactId>itstack-demo-design-1-00</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file

itstack-demo-design-1-01/src/main/java/org/itstack/demo/design/AwardReq.java

+package org.itstack.demo.design;
+
+import java.util.Map;
+
+public class AwardReq {
+
+    private String uId;                 // 用户唯一ID
+    private Integer awardType;          // 奖品类型(可以用枚举定义)；1优惠券、2实物商品、3第三方兑换卡(爱奇艺)
+    private String awardNumber;         // 奖品编号；sku、couponNumber、cardId
+    private String bizId;               // 业务ID，防重复
+    private Map<String, String> extMap; // 扩展信息
+
+    public String getuId() {
+        return uId;
+    }
+
+    public void setuId(String uId) {
+        this.uId = uId;
+    }
+
+    public Integer getAwardType() {
+        return awardType;
+    }
+
+    public void setAwardType(Integer awardType) {
+        this.awardType = awardType;
+    }
+
+    public String getAwardNumber() {
+        return awardNumber;
+    }
+
+    public void setAwardNumber(String awardNumber) {
+        this.awardNumber = awardNumber;
+    }
+
+    public String getBizId() {
+        return bizId;
+    }
+
+    public void setBizId(String bizId) {
+        this.bizId = bizId;
+    }
+
+    public Map<String, String> getExtMap() {
+        return extMap;
+    }
+
+    public void setExtMap(Map<String, String> extMap) {
+        this.extMap = extMap;
+    }
+}

itstack-demo-design-1-01/src/main/java/org/itstack/demo/design/AwardRes.java

+package org.itstack.demo.design;
+
+public class AwardRes {
+
+    private String code; // 编码
+    private String info; // 描述
+
+    public AwardRes(String code, String info) {
+        this.code = code;
+        this.info = info;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getInfo() {
+        return info;
+    }
+
+    public void setInfo(String info) {
+        this.info = info;
+    }
+
+}

itstack-demo-design-1-01/src/main/java/org/itstack/demo/design/PrizeController.java

+package org.itstack.demo.design;
+
+import com.alibaba.fastjson.JSON;
+import org.itstack.demo.design.card.IQiYiCardService;
+import org.itstack.demo.design.coupon.CouponResult;
+import org.itstack.demo.design.coupon.CouponService;
+import org.itstack.demo.design.goods.DeliverReq;
+import org.itstack.demo.design.goods.GoodsService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 模拟发奖服务
+ */
+public class PrizeController {
+
+    private Logger logger = LoggerFactory.getLogger(PrizeController.class);
+
+    public AwardRes awardToUser(AwardReq req) {
+        String reqJson = JSON.toJSONString(req);
+        AwardRes awardRes = null;
+        try {
+            logger.info("奖品发放开始{}。req:{}", req.getuId(), reqJson);
+            // 按照不同类型方法商品[1优惠券、2实物商品、3第三方兑换卡(爱奇艺)]
+            if (req.getAwardType() == 1) {
+                CouponService couponService = new CouponService();
+                CouponResult couponResult = couponService.sendCoupon(req.getuId(), req.getAwardNumber(), req.getBizId());
+                if ("0000".equals(couponResult.getCode())) {
+                    awardRes = new AwardRes("0000", "发放成功");
+                } else {
+                    awardRes = new AwardRes("0001", couponResult.getInfo());
+                }
+            } else if (req.getAwardType() == 2) {
+                GoodsService goodsService = new GoodsService();
+                DeliverReq deliverReq = new DeliverReq();
+                deliverReq.setUserName(queryUserName(req.getuId()));
+                deliverReq.setUserPhone(queryUserPhoneNumber(req.getuId()));
+                deliverReq.setSku(req.getAwardNumber());
+                deliverReq.setOrderId(req.getBizId());
+                deliverReq.setConsigneeUserName(req.getExtMap().get("consigneeUserName"));
+                deliverReq.setConsigneeUserPhone(req.getExtMap().get("consigneeUserPhone"));
+                deliverReq.setConsigneeUserAddress(req.getExtMap().get("consigneeUserAddress"));
+                Boolean isSuccess = goodsService.deliverGoods(deliverReq);
+                if (isSuccess) {
+                    awardRes = new AwardRes("0000", "发放成功");
+                } else {
+                    awardRes = new AwardRes("0001", "发放失败");
+                }
+            } else if (req.getAwardType() == 3) {
+                String bindMobileNumber = queryUserPhoneNumber(req.getuId());
+                IQiYiCardService iQiYiCardService = new IQiYiCardService();
+                iQiYiCardService.grantToken(bindMobileNumber, req.getAwardNumber());
+                awardRes = new AwardRes("0000", "发放成功");
+            }
+            logger.info("奖品发放完成{}。", req.getuId());
+        } catch (Exception e) {
+            logger.error("奖品发放失败{}。req:{}", req.getuId(), reqJson, e);
+            awardRes = new AwardRes("0001", e.getMessage());
+        }
+
+        return awardRes;
+    }
+
+    private String queryUserName(String uId) {
+        return "花花";
+    }
+
+    private String queryUserPhoneNumber(String uId) {
+        return "15200101232";
+    }
+
+}

itstack-demo-design-1-01/src/test/java/org/itstack/demo/test/ApiTest.java

+package org.itstack.demo.test;
+
+import com.alibaba.fastjson.JSON;
+import org.itstack.demo.design.AwardReq;
+import org.itstack.demo.design.AwardRes;
+import org.itstack.demo.design.PrizeController;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+
+public class ApiTest {
+
+    private Logger logger = LoggerFactory.getLogger(ApiTest.class);
+
+    @Test
+    public void test_awardToUser() {
+
+        PrizeController prizeController = new PrizeController();
+
+        System.out.println("\r\n模拟发放优惠券测试\r\n");
+        // 模拟发放优惠券测试
+        AwardReq req01 = new AwardReq();
+        req01.setuId("10001");
+        req01.setAwardType(1);
+        req01.setAwardNumber("EGM1023938910232121323432");
+        req01.setBizId("791098764902132");
+        AwardRes awardRes01 = prizeController.awardToUser(req01);
+
+        logger.info("请求参数：{}", JSON.toJSON(req01));
+        logger.info("测试结果：{}", JSON.toJSON(awardRes01));
+
+        System.out.println("\r\n模拟方法实物商品\r\n");
+        // 模拟方法实物商品
+        AwardReq req02 = new AwardReq();
+        req02.setuId("10001");
+        req02.setAwardType(2);
+        req02.setAwardNumber("9820198721311");
+        req02.setBizId("1023000020112221113");
+        req02.setExtMap(new HashMap<String, String>() {{
+            put("consigneeUserName", "谢飞机");
+            put("consigneeUserPhone", "15200292123");
+            put("consigneeUserAddress", "吉林省.长春市.双阳区.XX街道.檀溪苑小区.#18-2109");
+        }});
+
+        AwardRes awardRes02 = prizeController.awardToUser(req02);
+        logger.info("请求参数：{}", JSON.toJSON(req02));
+        logger.info("测试结果：{}", JSON.toJSON(awardRes02));
+
+        System.out.println("\r\n第三方兑换卡(爱奇艺)\r\n");
+        AwardReq req03 = new AwardReq();
+        req03.setuId("10001");
+        req03.setAwardType(3);
+        req03.setAwardNumber("AQY1xjkUodl8LO975GdfrYUio");
+
+        AwardRes awardRes03 = prizeController.awardToUser(req03);
+        logger.info("请求参数：{}", JSON.toJSON(req03));
+        logger.info("测试结果：{}", JSON.toJSON(awardRes03));
+
+    }
+
+}

itstack-demo-design-1-02/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">
+    <parent>
+        <artifactId>itstack-demo-design</artifactId>
+        <groupId>org.itstack</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>itstack-demo-design-1-02</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.itstack</groupId>
+            <artifactId>itstack-demo-design-1-00</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
+    </dependencies>
+    
+</project>
\ No newline at end of file

itstack-demo-design-1-02/src/main/java/org/itstack/demo/design/StoreFactory.java

+package org.itstack.demo.design;
+
+import org.itstack.demo.design.store.ICommodity;
+import org.itstack.demo.design.store.impl.CardCommodityService;
+import org.itstack.demo.design.store.impl.CouponCommodityService;
+import org.itstack.demo.design.store.impl.GoodsCommodityService;
+
+public class StoreFactory {
+
+    public ICommodity getCommodityService(Integer commodityType) {
+        if (null == commodityType) return null;
+        if (1 == commodityType) return new CouponCommodityService();
+        if (2 == commodityType) return new GoodsCommodityService();
+        if (3 == commodityType) return new CardCommodityService();
+        throw new RuntimeException("不存在的商品服务类型");
+    }
+
+}

itstack-demo-design-1-02/src/main/java/org/itstack/demo/design/store/ICommodity.java

+package org.itstack.demo.design.store;
+
+import java.util.Map;
+
+public interface ICommodity {
+
+    void sendCommodity(String uId, String commodityId, String bizId, Map<String, String> extMap) throws Exception;
+
+}

itstack-demo-design-1-02/src/main/java/org/itstack/demo/design/store/impl/CardCommodityService.java

+package org.itstack.demo.design.store.impl;
+
+import com.alibaba.fastjson.JSON;
+import org.itstack.demo.design.card.IQiYiCardService;
+import org.itstack.demo.design.store.ICommodity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+public class CardCommodityService implements ICommodity {
+
+    private Logger logger = LoggerFactory.getLogger(CardCommodityService.class);
+
+    // 模拟注入
+    private IQiYiCardService iQiYiCardService = new IQiYiCardService();
+
+    public void sendCommodity(String uId, String commodityId, String bizId, Map<String, String> extMap) throws Exception {
+        String mobile = queryUserMobile(uId);
+        iQiYiCardService.grantToken(mobile, bizId);
+        logger.info("请求参数[爱奇艺兑换卡] => uId：{} commodityId：{} bizId：{} extMap：{}", uId, commodityId, bizId, JSON.toJSON(extMap));
+        logger.info("测试结果[爱奇艺兑换卡]：success");
+    }
+
+    private String queryUserMobile(String uId) {
+        return "15200101232";
+    }
+
+}

itstack-demo-design-1-02/src/main/java/org/itstack/demo/design/store/impl/CouponCommodityService.java

+package org.itstack.demo.design.store.impl;
+
+import com.alibaba.fastjson.JSON;
+import org.itstack.demo.design.coupon.CouponResult;
+import org.itstack.demo.design.coupon.CouponService;
+import org.itstack.demo.design.store.ICommodity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+public class CouponCommodityService implements ICommodity {
+
+    private Logger logger = LoggerFactory.getLogger(CouponCommodityService.class);
+
+    private CouponService couponService = new CouponService();
+
+    public void sendCommodity(String uId, String commodityId, String bizId, Map<String, String> extMap) throws Exception {
+        CouponResult couponResult = couponService.sendCoupon(uId, commodityId, bizId);
+        logger.info("请求参数[优惠券] => uId：{} commodityId：{} bizId：{} extMap：{}", uId, commodityId, bizId, JSON.toJSON(extMap));
+        logger.info("测试结果[优惠券]：{}", JSON.toJSON(couponResult));
+        if (!"0000".equals(couponResult.getCode())) throw new RuntimeException(couponResult.getInfo());
+    }
+
+}

itstack-demo-design-1-02/src/main/java/org/itstack/demo/design/store/impl/GoodsCommodityService.java

+package org.itstack.demo.design.store.impl;
+
+import com.alibaba.fastjson.JSON;
+import org.itstack.demo.design.goods.DeliverReq;
+import org.itstack.demo.design.goods.GoodsService;
+import org.itstack.demo.design.store.ICommodity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+public class GoodsCommodityService implements ICommodity {
+
+    private Logger logger = LoggerFactory.getLogger(GoodsCommodityService.class);
+
+    private GoodsService goodsService = new GoodsService();
+
+    public void sendCommodity(String uId, String commodityId, String bizId, Map<String, String> extMap) throws Exception {
+        DeliverReq deliverReq = new DeliverReq();
+        deliverReq.setUserName(queryUserName(uId));
+        deliverReq.setUserPhone(queryUserPhoneNumber(uId));
+        deliverReq.setSku(commodityId);
+        deliverReq.setOrderId(bizId);
+        deliverReq.setConsigneeUserName(extMap.get("consigneeUserName"));
+        deliverReq.setConsigneeUserPhone(extMap.get("consigneeUserPhone"));
+        deliverReq.setConsigneeUserAddress(extMap.get("consigneeUserAddress"));
+
+        Boolean isSuccess = goodsService.deliverGoods(deliverReq);
+
+        logger.info("请求参数[优惠券] => uId：{} commodityId：{} bizId：{} extMap：{}", uId, commodityId, bizId, JSON.toJSON(extMap));
+        logger.info("测试结果[优惠券]：{}", isSuccess);
+
+        if (!isSuccess) throw new RuntimeException("实物商品发放失败");
+    }
+
+    private String queryUserName(String uId) {
+        return "花花";
+    }
+
+    private String queryUserPhoneNumber(String uId) {
+        return "15200101232";
+    }
+
+}

itstack-demo-design-1-02/src/test/java/org/itstack/demo/design/test/ApiTest.java

+package org.itstack.demo.design.test;
+
+import org.itstack.demo.design.StoreFactory;
+import org.itstack.demo.design.store.ICommodity;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class ApiTest {
+
+    @Test
+    public void test_commodity() throws Exception {
+        StoreFactory storeFactory = new StoreFactory();
+
+        // 1. 优惠券
+        ICommodity commodityService_1 = storeFactory.getCommodityService(1);
+        commodityService_1.sendCommodity("10001", "EGM1023938910232121323432", "791098764902132", null);
+
+        // 2. 实物商品
+        ICommodity commodityService_2 = storeFactory.getCommodityService(2);
+        Map<String,String> extMap = new HashMap<String,String>();
+        extMap.put("consigneeUserName", "谢飞机");
+        extMap.put("consigneeUserPhone", "15200292123");
+        extMap.put("consigneeUserAddress", "吉林省.长春市.双阳区.XX街道.檀溪苑小区.#18-2109");
+
+        commodityService_2.sendCommodity("10001","9820198721311","1023000020112221113",new HashMap<String, String>() {{
+            put("consigneeUserName", "谢飞机");
+            put("consigneeUserPhone", "15200292123");
+            put("consigneeUserAddress", "吉林省.长春市.双阳区.XX街道.檀溪苑小区.#18-2109");
+        }});
+
+        // 3. 第三方兑换卡(爱奇艺)
+        ICommodity commodityService_3 = storeFactory.getCommodityService(3);
+        commodityService_3.sendCommodity("10001","AQY1xjkUodl8LO975GdfrYUio",null,null);
+
+    }
+
+}