/QuizePrintsTickets

小票打印

Primary LanguageJava

PKU JAVA The Quize

项目结构

 src
    │   ├── main
    │   │   └── java
    │   │       └── com
    │   │           └── printer
    │   │               ├── App.java // 程序入口
    │   │               ├── config
    │   │               │   ├── PaperType.java // 枚举类，定义纸张类型
    │   │               │   ├── PrinterConfiguration.java // 打印机配置类
    │   │               │   └── PrinterType.java // 枚举类，定义打印机类型
    │   │               ├── core
    │   │               │   ├── Printer.java // 打印机功能抽象类
    │   │               │   └── impl
    │   │               │       ├── BluetoothPrinter.java // 蓝牙打印机
    │   │               │       ├── SerialPrinter.java // 串口打印机
    │   │               │       ├── UsbPrinter.java // USB打印机
    │   │               │       └── WifiPrinter.java // Wifi打印机
    │   │               ├── factory
    │   │               │   ├── PrinterFactory.java // 打印机工厂类
    │   │               │   └── impl
    │   │               │       ├── BluetoothPrinterFactory.java // 蓝牙打印机工厂
    │   │               │       └── WifiPrinterFactory.java // Wifi打印机工厂

实现思路概述

实现策略
  • 灵活性：通过使用工厂模式，项目可以轻松地引入新类型设备打印策略，而无需修改现有代码，这使得应用程序更加灵活。
  • 扩展性：添加新类型或打印方式变得方便直观，有利于应用程序的横向扩展。
  • 解耦：创建对象的过程从使用对象的过程中被分离出来，降低了系统各部分之间的依赖关系，提高了系统的稳定性
程序关系

App类：程序入口，负责初始化应用程序和启动打印。 配置类（config）：可能包含了配置信息 核心类（core）：实现打印机的业务逻辑 工厂类（factory）：根据配置动态地创建并返回特定类型的打印机对象。继承PrintFactory公共的抽象类，保证实现统一。

类图

classDiagram
    class PrinterConfiguration {
        -String ipAddr
        -int port
        -PrinterType printerType
        -PaperType paperType
        -String version
        +PrinterConfiguration(String ipAddr, int port, PrinterType printerType, PaperType paperType, String version)
        +getIpAddr() String
        +setIpAddr(String ipAddr)
        +getPort() int
        +setPort(int port)
        +getPrinterType() PrinterType
        +setPrinterType(PrinterType printerType)
        +getPaperType() PaperType
        +setPaperType(PaperType paperType)
        +getVersion() String
        +setVersion(String version)
    }

    class Printer {
        -PrinterConfiguration config
        -boolean connection
        +connect() boolean
        +disconnect()
        +sendHeartbeat()
        +getConfiguration() PrinterConfiguration
        +print(String content) boolean
        +printByC2(String content) boolean
        +printByC3(String content) boolean
        +printByC4(String content) boolean
        +isConnection() boolean
    }

    class BluetoothPrinter {
        +printByC2(String content) boolean
        +printByC3(String content) boolean
        +printByC4(String content) boolean
    }

    class WifiPrinter {
        +printByC2(String content) boolean
        +printByC3(String content) boolean
        +printByC4(String content) boolean
    }

    class SerialPrinter {
        +printByC2(String content) boolean
        +printByC3(String content) boolean
        +printByC4(String content) boolean
    }

    class UsbPrinter {
        +printByC2(String content) boolean
        +printByC3(String content) boolean
        +printByC4(String content) boolean
    }

    class PrinterFactory {
        -PrinterConfiguration config
        +getPrinterFactory(PrinterConfiguration config) PrinterFactory
        +createPrinter() Printer
        +connection(Printer printer) boolean
        +checkConnection(Printer printer) boolean
        +getPrinterStatus(Printer printer) String
        +sendHeartbeat(Printer printer)
        +disconnectPrinter(Printer printer)
        +notifyPaperEmpty(Printer printer)
    }

    class BluetoothPrinterFactory {
        +createPrinter() Printer
        +connection(Printer printer) boolean
        +checkConnection(Printer printer) boolean
        +getPrinterStatus(Printer printer) String
        +sendHeartbeat(Printer printer)
        +disconnectPrinter(Printer printer)
        +notifyPaperEmpty(Printer printer)
    }

    class WifiPrinterFactory {
        +createPrinter() Printer
        +connection(Printer printer) boolean
        +checkConnection(Printer printer) boolean
        +getPrinterStatus(Printer printer) String
        +sendHeartbeat(Printer printer)
        +disconnectPrinter(Printer printer)
        +notifyPaperEmpty(Printer printer)
    }

    Printer <|-- BluetoothPrinter
    Printer <|-- WifiPrinter
    Printer <|-- SerialPrinter
    Printer <|-- UsbPrinter
    PrinterFactory <|-- BluetoothPrinterFactory
    PrinterFactory <|-- WifiPrinterFactory
    PrinterConfiguration "1" -- "1" Printer : contains
    PrinterFactory "1" -- "1" Printer : creates
    PrinterFactory "1" -- "1" PrinterConfiguration : configures
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