{"id":1065,"date":"2024-05-24T13:23:20","date_gmt":"2024-05-24T05:23:20","guid":{"rendered":"http:\/\/www.spiceandwolf.com.cn\/?p=1065"},"modified":"2024-05-24T13:23:21","modified_gmt":"2024-05-24T05:23:21","slug":"design-pattern-facade-pattern","status":"publish","type":"post","link":"http:\/\/www.spiceandwolf.com.cn\/index.php\/design-pattern-facade-pattern\/","title":{"rendered":"\u8bbe\u8ba1\u6a21\u5f0f-\u5916\u89c2\u6a21\u5f0f"},"content":{"rendered":"\n

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\u5728\u5bb6\u5ead\u5f71\u9662\u76db\u884c\u7684\u73b0\u5728\uff0c\u5f88\u591a\u5bb6\u5ead\u90fd\u914d\u5907\u4e86\u81ea\u5bb6\u7684\u5bb6\u5ead\u5f71\u9662\uff0c\u6bcf\u5f53\u6211\u4eec\u9700\u8981\u901a\u8fc7\u5bb6\u5ead\u5f71\u9662\u8fdb\u884c\u81ea\u6211\u653e\u677e\u65f6\uff0c\u9700\u8981\u505a\u5f88\u591a\u51c6\u5907\u5de5\u4f5c\uff0c\u6bd4\u5982\uff1a\u6253\u5f00\u7535\u8111\u3001\u6253\u5f00\u6295\u5f71\u4eea\u3001\u5c06\u6295\u5f71\u548c\u7535\u8111\u901a\u8fc7hdmi\u8fde\u63a5\u3001\u6253\u5f00\u5916\u7f6e\u97f3\u7bb1\u3001\u8fde\u63a5\u5916\u7f6e\u97f3\u7bb1\u7ba1\u7ebf\u3001\u653e\u4e0b\u5e55\u5e03\u3001\u62c9\u4e0a\u7a97\u5e18\u3001\u5173\u95ed\u5ba4\u5185\u706f\u7b49\uff0c\u800c\u4e14\u5728\u89c2\u5f71\u5b8c\u6bd5\u540e\u4e5f\u9700\u8981\u5c06\u8bbe\u5907\u8fd8\u539f\uff0c\u8fd9\u672a\u514d\u4e5f\u592a\u9ebb\u70e6\u4e86\uff0c\u5982\u679c\u6709\u4e00\u79cd\u4e00\u952e\u5f00\u542f\u5bb6\u5ead\u5f71\u9662\u7684\u65b9\u5f0f\uff0c\u5373\u4f7f\u5728\u5de5\u4f5c\u65e5\u4e0b\u73ed\u540e\u6211\u4eec\u4e5f\u5f88\u4e50\u610f\u4eab\u53d7\u4e00\u756a\u3002\u6240\u4ee5\u5982\u679c\u6211\u4eec\u80fd\u5c06\u8fd9\u4e9b\u64cd\u4f5c\u5c01\u88c5\u8d77\u6765\uff0c\u8fdb\u884c\u4e00\u952e\u90e8\u7f72\uff0c\u5c31\u80fd\u7701\u4e0d\u5c11\u4e8b\uff0c\u8fd9\u5c31\u662f\u5916\u89c2\u6a21\u5f0f\u7684\u4e3b\u8981\u76ee\u7684\u3002<\/p>\n\n\n\n

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public class Popper {\n    public void on() {}\n\n    public void pop() {}\n\n    public void off() {}\n}<\/code><\/pre>\n\n\n\n
public class Lights {\n    int bright;\n\n    public Lights() {\n        this.bright = 100;\n    }\n    public void dim(int bright) {\n        this.bright = bright;\n    }\n}<\/code><\/pre>\n\n\n\n
public class Screen {\n    public void up() {}\n\n    public void down() {}\n\n    public String toString() {\n        return \"Screen\";\n    }\n}<\/code><\/pre>\n\n\n\n
public class Projector {\n    HdmiInput hdmiInput;\n    public void on() {}\n\n    public void setInput(HdmiInput in) {\n        hdmiInput.hdmi();\n    }\n\n    public void wideScreenMode() {}\n\n    public void off() {\n    }\n}<\/code><\/pre>\n\n\n\n
public class Computer implements HdmiInput {\n    @Override\n    public void hdmi() {\n\n    }\n\n    public void on() {}\n\n    public void play(String movie) {};\n\n    public void off() {}\n}<\/code><\/pre>\n\n\n\n
public class HomeTheaterFacade {\n    Popper popper;\n    Lights lights;\n    Screen screen;\n    Projector projector;\n    Computer computer;\n\n    public HomeTheaterFacade(Popper popper,\n                             Lights lights,\n                             Screen screen,\n                             Projector projector,\n                             Computer computer) {\n        this.popper = popper;\n        this.lights = lights;\n        this.screen = screen;\n        this.projector = projector;\n        this.computer = computer;\n    }\n\n    public void watchMovie(String movie) {\n        System.out.println(\"Get ready to watch a movie\");\n        popper.on();\n        popper.pop();\n        lights.dim(10);\n        screen.down();\n        computer.on();\n        projector.on();\n        projector.setInput(computer);\n        computer.play(movie);\n    }\n\n    public void endMovie() {\n        System.out.println(\"Shutting movie theater down...\");\n        popper.off();\n        lights.dim(100);\n        screen.up();\n        projector.off();\n        computer.off();\n    }\n}<\/code><\/pre>\n\n\n\n
public class HomeTheaterTestDrive {\n    public static void main(String[] args) {\n        Popper popper = new Popper();\n        Lights lights = new Lights();\n        Screen screen = new Screen();\n        Projector projector = new Projector();\n        Computer computer = new Computer();\n        projector.setInput(computer);\n        HomeTheaterFacade homeTheaterFacade = new HomeTheaterFacade(popper, lights, screen, projector, computer);\n        homeTheaterFacade.watchMovie(\"Forest Gump\");\n        homeTheaterFacade.endMovie();\n    }\n}<\/code><\/pre>\n\n\n\n
\u4e0a\u9762\u4ee3\u7801\u5c06\u5bb6\u5ead\u5f71\u9662\u6240\u9700\u8981\u505a\u7684\u4e8b\u60c5\u5168\u90e8\u96c6\u4e2d\u5230\u4e00\u4e2a\u7c7b\u4e2d\uff0c\u5e76\u5c01\u88c5\u5230\u6570\u4e2a\u65b9\u6cd5\u4e2d\u3002\u8fd9\u5c31\u662f\u5916\u89c2\u6a21\u5f0f\u7684\u597d\u5904\uff0c\u901a\u8fc7\u4e00\u4e2a\u63a5\u5355\u63a5\u53e3\u8bbf\u95ee\u7cfb\u7edf\uff0c\u65e2\u4e0d\u4f1a\u66b4\u9732\u7cfb\u7edf\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u53c8\u80fd\u8ba9\u5ba2\u6237\u66f4\u65b9\u4fbf\u7684\u8c03\u7528\u3002\u4e0b\u9762\u662f\u5916\u89c2\u6a21\u5f0f\u7684\u7c7b\u56fe\uff1a<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
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\u5982\u4f55\u9075\u5b88\u6700\u5c11\u77e5\u8bc6\u539f\u5219\uff0c\u6709\u4ee5\u4e0b\u65b9\u9488\uff1a\u5c31\u4efb\u4f55\u5bf9\u8c61\u800c\u8a00\uff0c\u5728\u8be5\u5bf9\u8c61\u7684\u65b9\u6cd5\u5185\uff0c\u6211\u4eec\u53ea\u5e94\u8be5\u8c03\u7528\u5c5e\u4e8e\u4ee5\u4e0b\u8303\u56f4\u7684\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
    \n
  • \u8be5\u5bf9\u8c61\u672c\u8eab<\/li>\n\n\n\n
  • \u88ab\u5f53\u4f5c\u65b9\u6cd5\u7684\u53c2\u6570\u4f20\u9012\u8fdb\u6765\u7684\u5bf9\u8c61<\/li>\n\n\n\n
  • \u6b64\u65b9\u6cd5\u6240\u521b\u5efa\u6216\u5b9e\u4f8b\u5316\u7684\u4efb\u4f55\u5bf9\u8c61<\/li>\n\n\n\n
  • \u5bf9\u8c61\u7684\u4efb\u4f55\u7ec4\u4ef6<\/li>\n<\/ul>\n\n\n\n
    \u8fdd\u53cd\u4e0a\u9762\u539f\u5219\u7684\u574f\u5904\u5728\u4e8e\uff0c\u5982\u679c\u6211\u4eec\u8fd9\u6837\u505a\uff0c\u76f8\u5f53\u4e8e\u5411\u53e6\u4e00\u4e2a\u5bf9\u8c61\u7684\u5b50\u90e8\u5206\u53d1\u9001\u8bf7\u6c42\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u9ed8\u8ba4\u8981\u6c42\u6211\u4eec\u9700\u8981\u5bf9\u8be5\u5bf9\u8c61\u7684\u5185\u90e8\u7ec6\u8282\u6709\u4e00\u5b9a\u7684\u4e86\u89e3\uff0c\u800c\u4e14\u5f53\u5bf9\u8c61\u5185\u4ee3\u7801\u4fee\u6539\u540e\uff0c\u4e5f\u4f1a\u5f71\u54cd\u5230\u5f53\u524d\u8bf7\u6c42\u7684\u8c03\u7528\uff0c\u4f46\u662f\u8fd9\u5e76\u4e0d\u662f\u5ba2\u6237\u9700\u8981\u505a\u7684\uff0c\u6240\u4ee5\u4ee5\u4e0a\u65b9\u9488\u80fd\u5e2e\u6211\u4eec\u589e\u5f3a\u7c7b\u65b9\u6cd5\u7684\u900f\u660e\u5ea6\uff0c\u8ba9\u5ba2\u6237\u4e0d\u9700\u8981\u4e86\u89e3\u7c7b\u5185\u7684\u5b9e\u73b0\u7ec6\u8282\uff0c\u800c\u4e14\u8fd8\u80fd\u51cf\u5c11\u8026\u5408\uff0c\u964d\u4f4e\u7ef4\u62a4\u6210\u672c\u3002<\/p>\n\n\n\n
    \u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n\n\n\n
    public float getTemp() {\n    \/\/ \u4ece\u6c14\u8c61\u7ad9\u53d6\u5f97\u6e29\u5ea6\u8ba1\u5bf9\u8c61\n    Thermometer thermometer = station.getThermometer();\n    \/\/ \u4ece\u6e29\u5ea6\u8ba1\u5bf9\u8c61\u53d6\u5f97\u6e29\u5ea6\n    return thermometer.getTemperature();\n}<\/code><\/pre>\n\n\n\n
    \u8fd9\u6bb5\u4ee3\u7801\u8fdd\u53cd\u4e86\u4e0a\u9762\u7684\u65b9\u9488\uff0c\u56e0\u4e3a\u6e29\u5ea6\u8ba1\u5bf9\u8c61\u5e76\u4e0d\u662f\u5f53\u524d\u5bf9\u8c61\u7684\u7ec4\u4ef6\uff0c\u662f\u4ecestation\u5bf9\u8c61\u4e2d\u53d6\u51fa\u7684\u5185\u90e8\u5bf9\u8c61\uff0c\u6240\u4ee5\u4f7f\u7528\u6e29\u5ea6\u8ba1\u5bf9\u8c61\u8fdd\u53cd\u4e86\u4ee5\u4e0a\u539f\u5219\u3002<\/p>\n\n\n\n
    \u6539\u8fdb\u65b9\u6848\uff1a<\/p>\n\n\n\n
    public float getTemp() {\n    \/\/ \u4ece\u6c14\u8c61\u7ad9\u53d6\u5f97\u6e29\u5ea6\n    return station.getTemperature();\n}<\/code><\/pre>\n\n\n\n
    \u8fd9\u91cc\u6211\u4eec\u5728\u6c14\u8c61\u4e2d\u4e2d\u52a0\u5165\u4e86\u53d6\u51fa\u6c14\u8c61\u7ad9\u6e29\u5ea6\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u8fd9\u91cc\u662f\u7b26\u5408\u6700\u5c11\u77e5\u8bc6\u539f\u5219\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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