项目结构这是一套完整的Java单例模式实现代码展示了珠宝企业全流程管理系统的设计。系统采用双重校验锁实现线程安全的单例模式包含11个业务部门服务类如原料采购、设计、生产等通过JewelryWorkflowManager统一调度。核心特点使用volatilesynchronized确保线程安全抽象基类SingletonBase提供统一日志功能支持两种执行模式串行流程顺序执行各部门业务并格式化输出高并发模式使用线程池并行执行各部门业务严格控制台输出编码UTF-8解决乱码问题每个服务类都是独立单例通过getInstance()获取输出样例展示各部门业务流程如[PROD]⚒加工生产镶嵌、抛光、铸造、成品制作等带图标的格式化文本。该设计实现了业务模块的高内聚、低耦合既保证线程安全又兼顾执行效率。/** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:30 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : AppLogger.java * explain : 学习 类 **/ package SingletonPattern.infra.log; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public final class AppLogger { private AppLogger() {} public static T Logger getLogger(ClassT clazz) { return LoggerFactory.getLogger(clazz); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:29 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : SingletonBase.java * explain : 学习 类 **/ package SingletonPattern.core; import SingletonPattern.infra.log.AppLogger; import org.slf4j.Logger; public abstract class SingletonBaseT { protected final Logger logger; protected SingletonBase() { logger AppLogger.getLogger(this.getClass()); logger.info([{}] 线程安全单例初始化完成, this.getClass().getSimpleName()); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:30 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : IWorkflowManager.java * explain : 学习 类 **/ package SingletonPattern.interfaces; /** * 流程调度接口 * */ public interface IWorkflowManager { // 串行标准流程输出分割线格式化文本 void startSerialStandardWorkflow(); // 多线程高并发执行 void startConcurrentHighSafeWorkflow(); } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:30 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : IDepartmentService.java * explain : 学习 类 **/ package SingletonPattern.interfaces.department; /** * 业务统一接口 * */ public interface IDepartmentService { // 执行业务逻辑输出日志 void executeBusiness(); // 串行控制台格式化打印无emoji纯文本不乱码 void printConsole(); } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述 * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 10:56 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : SingletonBll.java * explain : 学习 类 **/ package BLL; import SingletonPattern.core.workflow.JewelryWorkflowManager; import java.io.PrintStream; import java.nio.charset.StandardCharsets; // 单例模式 public class SingletonBll { public void demo(){ // 强制控制台输出UTF8解决Windows CMD中文乱码 System.setOut(new PrintStream(System.out, true, StandardCharsets.UTF_8)); JewelryWorkflowManager workflow JewelryWorkflowManager.getInstance(); // 串行格式化输出和你要求文本完全一致 workflow.startSerialStandardWorkflow(); // 模拟高并发多线程执行 workflow.startConcurrentHighSafeWorkflow(); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:31 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : JewelryWorkflowManager.java * explain : 学习 类 **/ package SingletonPattern.core.workflow; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.IWorkflowManager; import SingletonPattern.interfaces.department.IDepartmentService; import SingletonPattern.services.department.*; import java.util.ArrayList; import java.util.List; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.TimeUnit; public final class JewelryWorkflowManager extends SingletonBaseJewelryWorkflowManager implements IWorkflowManager { private static volatile JewelryWorkflowManager instance; private final ListIDepartmentService departments; private JewelryWorkflowManager() { departments new ArrayList(); departments.add(MaterialPurchaseService.getInstance()); departments.add(DesignService.getInstance()); departments.add(ProductionService.getInstance()); departments.add(QualityCheckService.getInstance()); departments.add(PackagingService.getInstance()); departments.add(LogisticsService.getInstance()); departments.add(FinanceService.getInstance()); departments.add(MarketingService.getInstance()); departments.add(BusinessService.getInstance()); departments.add(HRService.getInstance()); departments.add(ITService.getInstance()); } public static JewelryWorkflowManager getInstance() { if (instance null) { synchronized (JewelryWorkflowManager.class) { if (instance null) instance new JewelryWorkflowManager(); } } return instance; } /** * 串行流程输出固定分割线文本和C#输出完全一致 */ Override public void startSerialStandardWorkflow() { System.out.println(); System.out.println( 珠宝企业级全流程系统启动 (Java)); System.out.println(\n); for (IDepartmentService dept : departments) { dept.executeBusiness(); dept.printConsole(); } System.out.println(\n); System.out.println( 全流程执行完成); System.out.println(\n); } /** * 多线程高并发安全执行 */ Override public void startConcurrentHighSafeWorkflow() { logger.info( 高并发多线程流程开始双重锁volatile最高安全级别); ExecutorService pool Executors.newFixedThreadPool(departments.size()); for (IDepartmentService dept : departments) { pool.submit(dept::executeBusiness); } pool.shutdown(); try { pool.awaitTermination(3, TimeUnit.SECONDS); } catch (InterruptedException e) { Thread.currentThread().interrupt(); logger.error(并发流程等待中断, e); } logger.info( 全部并发业务执行完毕 ); } }/** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:40 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : BusinessService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class BusinessService extends SingletonBaseBusinessService implements IDepartmentService { private static volatile BusinessService instance; private BusinessService() {} public static BusinessService getInstance() { if (instance null) { synchronized (BusinessService.class) { if (instance null) instance new BusinessService(); } } return instance; } Override public void executeBusiness() { logger.info(业务对接客户咨询、订单签订、需求确认); } Override public void printConsole() { System.out.println([BIZ] \uD83E\uDD1D业务对接客户咨询、订单签订、需求确认); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:38 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : DesignService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class DesignService extends SingletonBaseDesignService implements IDepartmentService { private static volatile DesignService instance; private DesignService() {} public static DesignService getInstance() { if (instance null) { synchronized (DesignService.class) { if (instance null) instance new DesignService(); } } return instance; } Override public void executeBusiness() { logger.info(设计制图3D建模、款式设计、工艺图纸输出); } Override public void printConsole() { System.out.println([DESIGN] \uD83C\uDFA8设计制图3D建模、款式设计、工艺图纸输出); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:40 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : FinanceService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class FinanceService extends SingletonBaseFinanceService implements IDepartmentService { private static volatile FinanceService instance; private FinanceService() {} public static FinanceService getInstance() { if (instance null) { synchronized (FinanceService.class) { if (instance null) instance new FinanceService(); } } return instance; } Override public void executeBusiness() { logger.info(财务成本核算、营收记账、发票开具); } Override public void printConsole() { System.out.println([FIN] \uD83D\uDCB0 财务结算成本核算、营收记账、发票开具); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:40 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : HRService.java * explain : 学习 类 * ⚒️、、、、、、、、 * ✅ → [OK] * → [INFO] * → [DESIGN] * ⚒️ → [PROD] * → [QC] * → [PACK] * → [LOG] * → [FIN] * → [MKT] * → [BIZ] * → [HR] * → [IT] **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class HRService extends SingletonBaseHRService implements IDepartmentService { private static volatile HRService instance; private HRService() {} public static HRService getInstance() { if (instance null) { synchronized (HRService.class) { if (instance null) instance new HRService(); } } return instance; } Override public void executeBusiness() { logger.info(人事行政员工管理、考勤、办公支持); } Override public void printConsole() { System.out.println([HR]\uD83D\uDC65 人事行政员工管理、考勤、办公支持); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:41 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : ITService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class ITService extends SingletonBaseITService implements IDepartmentService { private static volatile ITService instance; private ITService() {} public static ITService getInstance() { if (instance null) { synchronized (ITService.class) { if (instance null) instance new ITService(); } } return instance; } Override public void executeBusiness() { logger.info(IT运维系统维护、数据安全、软件支持); } Override public void printConsole() { System.out.println([IT]\uD83D\uDCBB IT运维系统维护、数据安全、软件支持); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:40 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : LogisticsService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class LogisticsService extends SingletonBaseLogisticsService implements IDepartmentService { private static volatile LogisticsService instance; private LogisticsService() {} public static LogisticsService getInstance() { if (instance null) { synchronized (LogisticsService.class) { if (instance null) instance new LogisticsService(); } } return instance; } Override public void executeBusiness() { logger.info(物流保价发货、轨迹追踪、客户配送); } Override public void printConsole() { System.out.println([LOG]\uD83D\uDE9A 物流配送保价发货、轨迹追踪、客户配送); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:40 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : MarketingService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class MarketingService extends SingletonBaseMarketingService implements IDepartmentService { private static volatile MarketingService instance; private MarketingService() {} public static MarketingService getInstance() { if (instance null) { synchronized (MarketingService.class) { if (instance null) instance new MarketingService(); } } return instance; } Override public void executeBusiness() { logger.info(营销推广线上广告、门店活动、品牌宣传); } Override public void printConsole() { System.out.println([MKT]\uD83D\uDCE2 营销推广线上广告、门店活动、品牌宣传); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 20:31 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : MaterialPurchaseService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class MaterialPurchaseService extends SingletonBaseMaterialPurchaseService implements IDepartmentService { // volatile 禁止指令重排并发安全 private static volatile MaterialPurchaseService instance; // 私有构造禁止外部new private MaterialPurchaseService() {} // 全局唯一访问入口 public static MaterialPurchaseService getInstance() { if (instance null) { synchronized (MaterialPurchaseService.class) { if (instance null) { instance new MaterialPurchaseService(); } } } return instance; } Override public void executeBusiness() { logger.info(原料采购钻石/金料纯度检测、证书核验、入库登记); } Override public void printConsole() { System.out.println([OK] ✅ 原料采购核验钻石/金料纯度检测、证书核验、入库登记); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:39 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : PackagingService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class PackagingService extends SingletonBasePackagingService implements IDepartmentService { private static volatile PackagingService instance; private PackagingService() {} public static PackagingService getInstance() { if (instance null) { synchronized (PackagingService.class) { if (instance null) instance new PackagingService(); } } return instance; } Override public void executeBusiness() { logger.info(包装礼盒包装、防伪标签、证书封装); } Override public void printConsole() { System.out.println([PACK] \uD83D\uDD0D成品包装礼盒包装、防伪标签、证书封装); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:39 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : ProductionService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class ProductionService extends SingletonBaseProductionService implements IDepartmentService { private static volatile ProductionService instance; private ProductionService() {} public static ProductionService getInstance() { if (instance null) { synchronized (ProductionService.class) { if (instance null) instance new ProductionService(); } } return instance; } Override public void executeBusiness() { logger.info(加工生产镶嵌、抛光、铸造、成品制作); } Override public void printConsole() { System.out.println([PROD] ⚒\uFE0F加工生产镶嵌、抛光、铸造、成品制作); } } /** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 21:39 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : QualityCheckService.java * explain : 学习 类 **/ package SingletonPattern.services.department; import SingletonPattern.core.SingletonBase; import SingletonPattern.interfaces.department.IDepartmentService; public final class QualityCheckService extends SingletonBaseQualityCheckService implements IDepartmentService { private static volatile QualityCheckService instance; private QualityCheckService() {} public static QualityCheckService getInstance() { if (instance null) { synchronized (QualityCheckService.class) { if (instance null) instance new QualityCheckService(); } } return instance; } Override public void executeBusiness() { logger.info(质检成色、工艺、尺寸、证书一致性核验); } Override public void printConsole() { System.out.println([QC]\uD83D\uDD0D 质量检测成色、工艺、尺寸、证书一致性核验); } }调用/** * encoding: utf-8 * 版权所有 2026 ©涂聚文有限公司 ® * 许可信息查看言語成了邀功盡責的功臣還需要行爲每日來值班嗎 * 描述单例模式 Singleton * Author : geovindu,Geovin Du 涂聚文. * IDE : IntelliJ IDEA 2024.3.6 Java 17 * # database : Oracle21c,MySQL 9.0,SQL Server 2019,PostgreSQL 17.1 Neo4j * # OS : window10 * Datetime : 2026 - 2026/7/5 - 10:56 * User : geovindu * Product : IntelliJ IDEA * Project : javadesginpattern * File : SingletonBll.java * explain : 学习 类 **/ package BLL; import SingletonPattern.core.workflow.JewelryWorkflowManager; import java.io.PrintStream; import java.nio.charset.StandardCharsets; // 单例模式 public class SingletonBll { public void demo(){ // 强制控制台输出UTF8解决Windows CMD中文乱码 System.setOut(new PrintStream(System.out, true, StandardCharsets.UTF_8)); JewelryWorkflowManager workflow JewelryWorkflowManager.getInstance(); // 串行格式化输出和你要求文本完全一致 workflow.startSerialStandardWorkflow(); // 模拟高并发多线程执行 workflow.startConcurrentHighSafeWorkflow(); } }输出