\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63cf\u8ff0：\u4e00\u4e2a\u7c7b\u6c38\u8fdc\u53ea\u4ea7\u751f\u8fd9\u4e2a\u7c7b\u7684\u552f\u4e00\u5bf9\u8c61\u3002<\/span><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6784\u9020\u51fd\u6570\u79c1\u6709，\u9650\u5236\u5728\u5916\u90e8\u7c7b\u4e2d\u53bb\u521b\u5efa\u5bf9\u8c61，\u82e5\u5728\u5916\u90e8\u80fd\u591f\u521b\u5efa\u5bf9\u8c61，\u4f1a\u5bfc\u81f4\u5404\u4e2a\u5bf9\u8c61\u5728\u5806\u5185\u5b58\u7684\u5b58\u50a8\u7684\u6570\u636e\u4e0d\u4e00\u81f4\u3002<\/p>\n \/\/\u4e00\u4e2a\u7c7b\u6c38\u8fdc\u53ea\u4ea7\u751f\u8fd9\u4e2a\u7c7b\u7684\u552f\u4e00\u5bf9\u8c61 \/\/\u6076\u6c49\u5f0f\u5355\u4f8b：\u6ca1\u6709\u8c03\u7528getInstance(),\u8fd9\u4e2a\u5bf9\u8c61\u5c31\u5b58\u5728\u3002\u5360\u7528\u5806\u5185\u5b58\u3002 \/\/\u61d2\u6c49\u5f0f\u5355\u4f8b：\u9700\u8981\u8fd9\u4e2a\u5bf9\u8c61\u7684\u65f6\u5019，\u624d\u53bb\u521b\u5efa，\u61d2\u7684\u4f53\u73b0\u662f\u4e0d\u63d0\u524d\u5360\u7528\u5806\u5185\u5b58 \/\/\u6784\u9020\u51fd\u6570\u79c1\u6709，\u9650\u5236\u4e86\u5916\u90e8\u7c7b\u53bbnew\u5bf9\u8c61，\u521b\u5efa\u5bf9\u8c61 }<\/p>\n \/\/\u901a\u8fc7\u7c7b\u540d.static\u65b9\u6cd5\u8c03\u7528 return p; } <\/p>\n \u4e0b\u9762\u7684\u4ee3\u7801\u4f53\u73b0\u4e86\u61d2\u6c49\u5f0f\u5355\u4f8b\u6a21\u5f0f<\/span>：<\/p>\n （1）\u6784\u9020\u51fd\u6570\u79c1\u6709：\u9632\u6b62\u5916\u90e8\u7c7b\u76f4\u63a5\u901a\u8fc7new\u521b\u5efa\u5b9e\u4f8b，\u786e\u4fdd\u53ea\u80fd\u901a\u8fc7\u7c7b\u63d0\u4f9b\u7684\u9759\u6001\u65b9\u6cd5\u83b7\u53d6\u5b9e\u4f8b\u3002<\/p>\n （2）\u9759\u6001\u79c1\u6709\u5b9e\u4f8b\u53d8\u91cf：\u8fd9\u4e2a\u9759\u6001\u53d8\u91cf\u7528\u4e8e\u4fdd\u5b58\u7c7b\u7684\u552f\u4e00\u5b9e\u4f8b\u3002<\/p>\n （3）\u9759\u6001\u516c\u5171\u83b7\u53d6\u65b9\u6cd5：\u8fd9\u662f\u83b7\u53d6\u7c7b\u5b9e\u4f8b\u7684\u552f\u4e00\u5165\u53e3，\u63a7\u5236\u7740\u5b9e\u4f8b\u7684\u521b\u5efa\u548c\u8bbf\u95ee\u3002<\/p>\n package demo1; public class ParseProFile {<\/p>\n private static ParseProFile p; \/\/\u61d2\u6c49\u5f0f\u5355\u4f8b<\/p>\n \/\/ \u6784\u9020\u51fd\u6570\u79c1\u6709，\u9650\u5236\u5728\u5916\u90e8\u7c7b\u4e2d\u53bb\u521b\u5efa\u5bf9\u8c61，\u82e5\u5728\u5916\u90e8\u7c7b\u4e2d\u80fd\u591f\u521b\u5efa\u5bf9\u8c61，\u4f1a\u5bfc\u81f4\u5404\u4e2a\u5bf9\u8c61\u5728\u5806\u5185\u5b58\u7684\u5b58\u50a8\u7684\u6570\u636e\u4e0d\u4e00\u81f4 Reader reader = new FileReader(".\/src\/main\/java\/demo1\/demo.properties"); String str = p.getProperty("port"); String queryStuSql = p.getProperty("queryStuSQL"); } catch (FileNotFoundException e) { }<\/p>\n public static ParseProFile getInstance() if(null == p) return p; \/\/p\u662f\u9759\u6001\u53d8\u91cf，\u5b58\u5728\u4e8e\u9759\u6001\u5168\u5c40\u6570\u636e\u533a，\u5f53new\u8fc7\u4e00\u6b21\u540ep\u5b58\u5728,\u540e\u9762\u76f4\u63a5\u590d\u7528\u5c31\u884c，\u6240\u4ee5\u5730\u5740\u90fd\u76f8\u540c\u3002<\/p>\n } public class Test {<\/p>\n public static void main(String[] args) {<\/p>\n ParseProFile p1 = ParseProFile.getInstance(); \/\/\u591a\u6b21\u8c03\u7528getInstance()\u8fd4\u56de\u7684\u90fd\u662f\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002 \u8fd0\u884c\u7ed3\u679c\u5982\u4e0b：<\/p>\n \u4e0b\u9762\u662f\u901a\u8fc7\u9e3f\u8499（HarmonyOS）ArkUI \u7684\u5e03\u5c40\u793a\u4f8b，\u4f53\u73b0\u7c7b\u4f3c\u6076\u6c49\u5f0f\u548c\u61d2\u6c49\u5f0f\u7684\u5355\u4f8b\u6a21\u5f0f，\u5b83\u4eec\u53ef\u4ee5\u901a\u8fc7\u00a0\u6570\u636e\u52a0\u8f7d\u548c\u6e32\u67d3\u65f6\u673a\u00a0<\/span>\u6765\u7c7b\u6bd4\u8fd9\u4e24\u79cd\u8bbe\u8ba1\u6a21\u5f0f\u7684\u601d\u60f3\u3002<\/p>\n （1）\u4f53\u73b0\u6076\u6c49\u5f0f\u5355\u4f8b\u6a21\u5f0f：（Scroll + ForEach\u5e03\u5c40）<\/p>\n \u4e00\u6b21\u6027\u52a0\u8f7d\u6240\u6709\u6570\u636e（100 \u9879\u5168\u90e8\u521d\u59cb\u5316）\u3002<\/p>\n<\/li>\n \u5373\u4f7f\u67d0\u4e9b\u00a0Row\u00a0\u4e0d\u5728\u53ef\u89c6\u533a\u57df，\u4e5f\u4f1a\u88ab\u00a0ForEach\u00a0\u904d\u5386\u5e76\u521b\u5efa\u3002<\/p>\n<\/li>\n \u7c7b\u4f3c\u4e8e\u6076\u6c49\u5f0f：\u63d0\u524d\u52a0\u8f7d\u6240\u6709\u6570\u636e，\u5360\u7528\u5185\u5b58\u8f83\u591a，\u4f46\u6eda\u52a8\u65f6\u4e0d\u4f1a\u52a8\u6001\u52a0\u8f7d\u3002<\/p>\n<\/li>\n<\/ul>\n @Entry arrs:string[] = []<\/p>\n aboutToAppear(): void { loadItem(item:string,index:number):string{ build() {<\/p>\n Scroll() }.width("100%").height("100%")<\/p>\n } \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n （2）\u4f53\u73b0\u61d2\u6c49\u5f0f\u5355\u4f8b\u6a21\u5f0f：（List + ForEach\u5e03\u5c40）<\/p>\n \u6309\u9700\u6e32\u67d3：List\u00a0\u7ec4\u4ef6\u81ea\u5e26\u61d2\u52a0\u8f7d\u4f18\u5316\u3002<\/p>\n<\/li>\n \u53ea\u6709\u6eda\u52a8\u5230\u67d0\u4e2a\u00a0ListItem\u00a0\u65f6，\u624d\u4f1a\u771f\u6b63\u521b\u5efa\u5e76\u6e32\u67d3\u5b83\u3002<\/p>\n<\/li>\n \u7c7b\u4f3c\u4e8e\u61d2\u6c49\u5f0f：\u4ec5\u52a0\u8f7d\u5f53\u524d\u53ef\u89c1\u7684\u9879，\u8282\u7701\u5185\u5b58，\u4f46\u6eda\u52a8\u65f6\u53ef\u80fd\u9700\u8981\u52a8\u6001\u52a0\u8f7d\u3002<\/p>\n<\/li>\n<\/ul>\n @Entry aboutToAppear(): void { loadItem(item: string, index: number): string { build() { } <\/p>\n \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u603b\u7ed3：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63cf\u8ff0：\u6839\u636e\u7528\u6237\u7684\u9700\u6c42\u5de5\u5382\u7c7b\u4ea7\u751f\u5b9e\u9645\u7684\u5bf9\u8c61\u3002\u4e3b\u8981\u662f\u7c7b\u7684\u8bbe\u8ba1，\u52a8\u6001\u7ed1\u5b9a，\u65b9\u6cd5\u91cd\u5199\u3002<\/span><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e00\u4e2a\u5de5\u5382\u7c7b\u521b\u5efa\u4e00\u4e2a\u4ea7\u54c1\u65cf（\u591a\u4e2a\u76f8\u5173\u4ea7\u54c1）\u3002<\/p>\n \u4e0b\u9762\u901a\u8fc7\u4e00\u4e2a\u52a8\u7269\u519c\u573a\u6a21\u62df\u5668\u6765\u4f53\u73b0\u62bd\u8c61\u5de5\u5382\u6a21\u5f0f\u7684\u6838\u5fc3\u601d\u60f3\u548c\u7ed3\u6784：<\/p>\n （1）\u52a8\u7269\u63a5\u53e3<\/p>\n \/\/\u52a8\u7269\u63a5\u53e3 （2）\u98df\u7269\u63a5\u53e3<\/p>\n \/\/ \u98df\u7269\u63a5\u53e3 （1）\u732b\u4ea7\u54c1\u65cf<\/p>\n public class Cat implements Animal { @Override （2）\u72d7\u4ea7\u54c1\u65cf<\/p>\n public class Dog implements Animal { @Override \u4f53\u73b0\u70b9：<\/p>\n \u4ea7\u54c1\u5206\u4e3a\u62bd\u8c61\u63a5\u53e3\u548c\u5177\u4f53\u5b9e\u73b0<\/p>\n<\/li>\n \u4ea7\u54c1\u6309\u7c7b\u578b\u5f62\u6210\u7b49\u7ea7\u7ed3\u6784（\u52a8\u7269\u3001\u98df\u7269）<\/p>\n<\/li>\n \u5177\u4f53\u4ea7\u54c1\u5c5e\u4e8e\u7279\u5b9a\u4ea7\u54c1\u65cf（\u732b\u65cf\u3001\u72d7\u65cf）<\/p>\n<\/li>\n<\/ul>\n public interface AnimalFarmFactory { \u4f53\u73b0\u70b9：<\/p>\n \u5b9a\u4e49\u4e86\u521b\u5efa"\u4ea7\u54c1\u65cf"\u7684\u63a5\u53e3（\u52a8\u7269\u548c\u98df\u7269）<\/p>\n<\/li>\n \u4e0d\u5173\u5fc3\u5177\u4f53\u5b9e\u73b0，\u53ea\u58f0\u660e\u80fd\u521b\u5efa\u54ea\u4e9b\u7c7b\u578b\u7684\u4ea7\u54c1<\/p>\n<\/li>\n \u7b26\u5408"\u62bd\u8c61\u5de5\u5382"\u4e2d"\u62bd\u8c61"\u7684\u6982\u5ff5<\/p>\n<\/li>\n<\/ul>\n （1）\u732b\u5de5\u5382<\/p>\n public class CatFarmFactory implements AnimalFarmFactory { @Override （2）\u72d7\u5de5\u5382<\/p>\n public class DogFarmFactory implements AnimalFarmFactory { @Override \u4f53\u73b0\u70b9：<\/p>\n \u6bcf\u4e2a\u5177\u4f53\u5de5\u5382\u8d1f\u8d23\u521b\u5efa\u4e00\u4e2a\u5b8c\u6574\u7684\u4ea7\u54c1\u65cf（\u732b+\u9c7c，\u72d7+\u9aa8\u5934)<\/p>\n<\/li>\n \u7b26\u5408"\u4e00\u4e2a\u5de5\u5382\u521b\u5efa\u4e00\u7cfb\u5217\u76f8\u5173\u5bf9\u8c61"\u7684\u539f\u5219<\/p>\n<\/li>\n<\/ul>\n package abstratcDemo2;<\/p>\n import java.util.Scanner;<\/p>\n public class FarmSimulator { Scanner scanner = new Scanner(System.in); AnimalFarmFactory factory = null;<\/p>\n if(choice == 1){ \/\/ \u4f7f\u7528\u5de5\u5382\u521b\u5efa\u4ea7\u54c1（\u65b9\u6cd5\u91cd\u5199） System.out.println("\u519c\u573a\u521b\u5efa\u6210\u529f："); System.out.print("\u8fdb\u98df\u884c\u4e3a："); System.out.print("\u98df\u7269\u8425\u517b："); } \u4f53\u73b0\u70b9：<\/p>\n \u5ba2\u6237\u7aef\u53ea\u4f9d\u8d56\u62bd\u8c61\u63a5\u53e3，\u4e0d\u4f9d\u8d56\u5177\u4f53\u5b9e\u73b0<\/p>\n<\/li>\n \u53ef\u4ee5\u8f7b\u677e\u5207\u6362\u6574\u4e2a\u4ea7\u54c1\u65cf（\u53ea\u9700\u5207\u6362\u52a8\u6001\u7ed1\u5b9a\u7684\u5de5\u5382\u5b9e\u4f8b）<\/p>\n<\/li>\n<\/ul>\n \u5b9e\u73b0\u6548\u679c：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5de5\u5382\u7c7b\u91cc\u9762\u5199\u9759\u6001\u65b9\u6cd5，\u901a\u8fc7\u7c7b\u540d\u8c03\u7528\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u6240\u6709\u5bf9\u8c61\u7684\u521b\u5efa\u903b\u8f91\u96c6\u4e2d\u5728\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5\u4e2d，\u4e0d\u9700\u8981\u521b\u5efa\u591a\u4e2a\u5de5\u5382\u5b50\u7c7b\u3002<\/p>\n \u9759\u6001\u5de5\u5382\u7279\u70b9：<\/p>\n \u4e0b\u9762\u7684\u4ee3\u7801\u5c55\u793a\u4e86\u9759\u6001\u5de5\u5382\u6a21\u5f0f\u7684\u5b9e\u73b0\u65b9\u5f0f，\u5de5\u5382\u7c7bAnimalFactory\u5305\u542b\u4e00\u4e2a\u9759\u6001\u65b9\u6cd5createAnimal，\u5ba2\u6237\u7aef\u901a\u8fc7\u7c7b\u540d\u76f4\u63a5\u8c03\u7528\u9759\u6001\u65b9\u6cd5\u521b\u5efa\u5bf9\u8c61：AnimalFactory.createAnimal()，\u5c06\u5bf9\u8c61\u521b\u5efa\u7684\u7ec6\u8282\u5c01\u88c5\u5728\u5de5\u5382\u7c7b\u4e2d\u3002<\/p>\n public interface Animal { \/\/ \u5de5\u5382\u7c7b\u91cc\u9762\u5199\u9759\u6001\u65b9\u6cd5，\u901a\u8fc7\u7c7b\u540d\u8c03\u7528 if(name.equals("\u72d7")) \/\/\u5f53\u4ea7\u54c1\u7c7b\u578b\u5f88\u591a\u65f6，\u9759\u6001\u5de5\u5382\u9700\u8981\u5927\u91cfif-else\u5206\u652f public class Cat implements Animal { System.out.println("\u751f\u4ea7\u72d7"); import java.util.Scanner;<\/p>\n public class Test {<\/p>\n public static void main(String[] args) { Scanner s = new Scanner(System.in); Animal an = AnimalFactory.createAnimal(inputValue); \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63cf\u8ff0：\u901a\u8fc7\u6a21\u677f\u65b9\u6cd5\u6309\u7167\u89c4\u5b9a\u597d\u7684\u6d41\u7a0b\u6267\u884c\u3002<\/span><\/p>\n \u4e0b\u9762\u901a\u8fc7\u4ee3\u7801\u4f53\u73b0\u6a21\u7248\u6a21\u5f0f\u7684\u7ed3\u6784\u548c\u7279\u70b9：<\/span><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u5728\u62bd\u8c61\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u6a21\u677f\u65b9\u6cd5（\u6267\u884c\u6d41\u7a0b\u4e0d\u5e0c\u671b\u88ab\u6539\u53d8，\u7528final\u5173\u952e\u5b57\u4fee\u9970，\u8be5\u65b9\u6cd5\u4e0d\u88ab\u5b50\u7c7b\u7ee7\u627f）\u3002<\/p>\n public abstract class AbstractHome {<\/p>\n \/\/\u5b9a\u4e49\u4e00\u4e2a\u6a21\u677f\u65b9\u6cd5，\u7528final\u5173\u952e\u5b57\u4fee\u9970，\u8be5\u65b9\u6cd5\u4e0d\u88ab\u5b50\u7c7b\u7ee7\u627f public void work() \/\/\u56de\u5bb6\u7684\u4ea4\u901a\u5de5\u5177\u4e0d\u4e00\u6837，\u62bd\u8c61\u65b9\u6cd5，\u7531\u5b50\u7c7b\u5b9e\u73b0 public void goHome() public class HuaweiCar extends AbstractHome { public class Test {<\/p>\n public static void main(String[] args) { ah.homeFrameWork(); } <\/p>\n \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63cf\u8ff0：\u7b56\u7565\u7c7b\u6765\u7ed1\u5b9a（\u901a\u8fc7\u6784\u9020\u51fd\u6570\u6216set\u65b9\u6cd5）\u4e0d\u540c\u7684\u5177\u4f53\u7684\u7b56\u7565\u7684\u5b9e\u73b0\u7c7b\u3002<\/span><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7b56\u7565\u7c7b\u4e2d\u7684\u6784\u9020\u6ce8\u5165\u6216set\u6ce8\u5165\u4f20\u5165\u7684\u53c2\u6570\u662f\u5bf9\u8c61\u7c7b\u578b\u3002<\/span><\/p>\n \u4e0b\u9762\u7684\u4ee3\u7801\u4f53\u73b0\u4e86\u57fa\u4e8e\u9762\u5411\u5bf9\u8c61\u7684\u7b56\u7565\u6a21\u5f0f\u7684\u5b9e\u73b0：<\/p>\n 1.\u7b56\u7565\u63a5\u53e3 (LikeGril)<\/p>\n public interface LikeGril { \u5b9a\u4e49\u4e86\u6240\u6709\u5177\u4f53\u7b56\u7565\u7c7b\u5fc5\u987b\u5b9e\u73b0\u7684\u65b9\u6cd5<\/p>\n<\/li>\n \u62bd\u8c61\u4e86"\u8ffd\u6c42\u65b9\u5f0f"\u8fd9\u4e00\u884c\u4e3a<\/p>\n<\/li>\n<\/ul>\n 2.\u5177\u4f53\u7b56\u7565\u7c7b (LikeType1\/2\/3)<\/p>\n public class LikeType1 implements LikeGril { System.out.println("\u4f7f\u7528\u65b9\u5f0f1："+ type+ "\u6765\u83b7\u5f97\u82b3\u5fc3"); System.out.println("\u4f7f\u7528\u65b9\u5f0f2："+ type+ "\u6765\u83b7\u5f97\u82b3\u5fc3"); System.out.println("\u4f7f\u7528\u65b9\u5f0f3："+ type+ "\u6765\u83b7\u5f97\u82b3\u5fc3"); \u6bcf\u4e2a\u7c7b\u5b9e\u73b0\u4e86\u4e0d\u540c\u7684\u5177\u4f53\u7b56\u7565<\/p>\n<\/li>\n \u5c01\u88c5\u4e86\u5177\u4f53\u7684\u7b97\u6cd5\/\u884c\u4e3a\u5b9e\u73b0<\/p>\n<\/li>\n<\/ul>\n 3.\u7b56\u7565\u7c7b (LikeContext)<\/p>\n public class LikeContext {<\/p>\n \/\/\u58f0\u660e\u7684\u63a5\u53e3\u5bf9\u8c61,\u7236\u7c7b\u5bf9\u8c61，\u53ef\u4ee5\u7ed1\u5b9aLikeType \/\/\u6784\u9020\u6ce8\u5165\u3010spring\u3011，\u901a\u8fc7LikeContext\u7c7b\u7684\u6784\u9020\u51fd\u6570\u7ed9\u63a5\u53e3LikeGril\u7ed1\u5b9a\u5177\u4f53\u7684\u5bf9\u8c61，\u5b8c\u6210\u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316 \/\/set\u6ce8\u5165\u3010spring\u3011,\u901a\u8fc7set\u65b9\u6cd5\u4f20\u5165\u5bf9\u8c61 \/\/\u6267\u884c\u559c\u6b22\u7684\u65b9\u6cd5 } <\/p>\n \u7ef4\u62a4\u5bf9\u7b56\u7565\u5bf9\u8c61\u7684\u5f15\u7528<\/p>\n<\/li>\n \u63d0\u4f9b\u5207\u6362\u7b56\u7565\u7684\u65b9\u6cd5<\/p>\n<\/li>\n \u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u5f53\u524d\u7b56\u7565<\/p>\n<\/li>\n<\/ul>\n 4.\u5ba2\u6237\u7aef\u4f7f\u7528\u65b9\u5f0f<\/p>\n package strategyDemo1;<\/p>\n public class Test {<\/p>\n public static void main(String[] args) {<\/p>\n \/\/ \u521b\u5efa\u7b56\u7565\u7c7b\u5e76\u8bbe\u7f6e\u521d\u59cb\u7b56\u7565 \/\/ \u8fd0\u884c\u65f6\u5207\u6362\u7b56\u7565 \/\/ \u4f7f\u7528\u4e0d\u540c\u7b56\u7565\u7684\u53e6\u4e00\u4e2a\u7b56\u7565\u7c7b\u5bf9\u8c61 \u5ba2\u6237\u7aef\u51b3\u5b9a\u4f7f\u7528\u54ea\u79cd\u7b56\u7565<\/p>\n<\/li>\n \u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u5207\u6362\u7b56\u7565<\/p>\n<\/li>\n \u591a\u4e2a\u7b56\u7565\u7c7b\u5bf9\u8c61\u53ef\u4ee5\u540c\u65f6\u4f7f\u7528\u4e0d\u540c\u7b56\u7565<\/p>\n<\/li>\n<\/ul>\n \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u7b56\u7565\u7c7b\u4e2d\u7684\u6784\u9020\u6ce8\u5165\u6216set\u6ce8\u5165\u4f20\u5165\u7684\u53c2\u6570\u662f\u51fd\u6570（lambda\u8868\u8fbe\u5f0f）\u3002<\/span><\/p>\n \u4e0b\u9762\u7684\u4ee3\u7801\u4f53\u73b0\u4e86\u57fa\u4e8e\u9762\u5411\u51fd\u6570\u63a5\u53e3\u7684\u7b56\u7565\u6a21\u5f0f\u7684\u5b9e\u73b0：<\/p>\n 1.\u51fd\u6570\u5f0f\u7b56\u7565\u63a5\u53e3<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4f7f\u7528@FunctionalInterface\u6ce8\u89e3\u660e\u786e\u6807\u8bb0\u4e3a\u51fd\u6570\u5f0f\u63a5\u53e3，\u91cc\u9762\u53ea\u80fd\u6709\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5\u3002<\/p>\n @FunctionalInterface 2.\u7b56\u7565\u7c7b<\/p>\n package strategyDemo2;<\/p>\n public class User {<\/p>\n \/\/\u58f0\u660e\u7684\u63a5\u53e3\u5bf9\u8c61 \/\/ \u6784\u9020\u6ce8\u5165 \/\/ \u6267\u884c\u7b56\u7565 }<\/p>\n 3.\u5ba2\u6237\u7aef\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u76f4\u63a5\u4f7f\u7528Lambda\u8868\u8fbe\u5f0f\u4f5c\u4e3a\u5177\u4f53\u7b56\u7565\u5b9e\u73b0，\u6bcf\u4e2aLambda\u76f8\u5f53\u4e8e\u4e00\u4e2a\u7b56\u7565\u5b9e\u73b0\u7c7b，\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u76f4\u89c2\u3002<\/p>\n public static void main(String[] args) {<\/p>\n User u1 = new User((type)->{ System.out.println("\u559c\u6b22\u7684\u65b9\u5f0f\u67091:"+type+"，\u6765\u83b7\u53d6\u82b3\u5fc3"); }); User u2 = new User((type)->{ System.out.println("\u559c\u6b22\u7684\u65b9\u5f0f\u67092:"+type+"，\u6765\u83b7\u53d6\u82b3\u5fc3"); }); \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u4ee3\u7406\u6a21\u5f0f\u662f\u5207\u9762\u7f16\u7a0b\u7684\u6838\u5fc3\u6a21\u5f0f\u3002\u5207\u9762： \u6267\u884c\u8fd9\u4e2a\u65b9\u6cd5\u4e4b\u524d\u548c\u4e4b\u540e\u505a\u7684\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u63cf\u8ff0：\u4ee3\u7406\u7c7b\u4ee3\u7406\u771f\u5b9e\u7684\u4e1a\u52a1\u7c7b\u5f62\u6210\u5207\u9762\u7c7b\u5bf9\u771f\u5b9e\u7684\u4e1a\u52a1\u7c7b\u7684\u62e6\u622a\u3002<\/span><\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u524d\u7f6e\u62e6\u622a：\u9274\u6743，\u53cd\u722c\u866b\u673a\u5236， \u8bbe\u5907\u7684\u7c7b\u578b\u3002<\/p>\n \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u540e\u7f6e\u62e6\u622a：\u4e00\u4e2a\u65b9\u6cd5\u7684\u6027\u80fd\u7684\u6570\u636e\u91c7\u96c6\u3002<\/p>\n \u4f18\u70b9：<\/p>\n \u804c\u8d23\u6e05\u6670：\u771f\u5b9e\u5bf9\u8c61\u53ea\u9700\u5173\u6ce8\u6838\u5fc3\u4e1a\u52a1<\/p>\n<\/li>\n \u6269\u5c55\u6027\u5f3a：\u901a\u8fc7\u4ee3\u7406\u53ef\u4ee5\u65b9\u4fbf\u5730\u6dfb\u52a0\u989d\u5916\u529f\u80fd<\/p>\n<\/li>\n \u4fdd\u62a4\u771f\u5b9e\u5bf9\u8c61：\u5ba2\u6237\u7aef\u4e0d\u76f4\u63a5\u8bbf\u95ee\u771f\u5b9e\u5bf9\u8c61<\/p>\n<\/li>\n<\/ul>\n \u7f3a\u70b9：<\/p>\n \u6bcf\u4e2a\u771f\u5b9e\u7c7b\u90fd\u9700\u8981\u4e00\u4e2a\u4ee3\u7406\u7c7b<\/p>\n<\/li>\n \u63a5\u53e3\u53d8\u5316\u65f6，\u4ee3\u7406\u7c7b\u548c\u771f\u5b9e\u7c7b\u90fd\u9700\u8981\u4fee\u6539<\/p>\n<\/li>\n<\/ul>\n \u4e0b\u9762\u901a\u8fc7\u4ee3\u7801\u6765\u4f53\u73b0\u9759\u6001\u4ee3\u7406\u6a21\u5f0f\u7684\u5b9e\u73b0：<\/p>\n 1.\u5b9a\u4e49\u63a5\u53e3<\/p>\n public interface Operator { \u4ee3\u7406\u7c7bProxy\u548c\u771f\u5b9e\u7c7bStuOperator\u5b9e\u73b0\u76f8\u540c\u63a5\u53e3\u3002<\/p>\n 2.\u771f\u5b9e\u7c7b：<\/p>\n \/\/\u5b66\u751f\u7c7b \u771f\u5b9e\u7c7b 3.\u4ee3\u7406\u7c7b：<\/p>\n \/\/\u4ee3\u7406\u7c7b，\u4e2d\u4ecb，\u4ee3\u7406\u5b66\u751f\u53bb\u79df\u623f\u5b50 private Operator op; \/\/\u4ee3\u7406\u6301\u6709\u771f\u5b9e\u5bf9\u8c61\u7684\u5f15\u7528<\/p>\n private Interceptor in;<\/p>\n \/\/ \u6784\u9020\u6ce8\u5165，\u771f\u5b9e\u7c7b\u4f20\u7ed9op，\u62e6\u622a\u7c7b\u4f20\u7ed9in @Override \/\/\u4ee3\u7406\u63a7\u5236\u5bf9\u771f\u5b9e\u5bf9\u8c61\u7684\u8bbf\u95ee } 4.\u62e6\u622a\u7684\u63a5\u53e3\u4e0e\u5177\u4f53\u7684\u5b9e\u73b0\u7c7b：<\/p>\n \/\/\u62e6\u622a\u7684\u63a5\u53e3 public class HouseInterceptor implements Interceptor { @Override } 5.\u5ba2\u6237\u7aef\u4ee3\u7801：<\/p>\n package proxyDemo1;<\/p>\n public class Test {<\/p>\n public static void main(String[] args) {<\/p>\n \/\/\u5ba2\u6237\u7aef\u521b\u5efa\u4ee3\u7406\u5bf9\u8c61，\u4f20\u5165\u771f\u5b9e\u5bf9\u8c61\u548c\u62e6\u622a\u5668 \/\/\u5ba2\u6237\u7aef\u901a\u8fc7\u4ee3\u7406\u95f4\u63a5\u8bbf\u95ee\u771f\u5b9e\u5bf9\u8c61 } \u00a06.\u9759\u6001\u4ee3\u7406\u7684\u6267\u884c\u6d41\u7a0b<\/p>\n （1）\u5ba2\u6237\u7aef\u521b\u5efa\u4ee3\u7406\u5bf9\u8c61，\u4f20\u5165\u771f\u5b9e\u5bf9\u8c61\u548c\u62e6\u622a\u5668<\/p>\n Proxy proxy = new Proxy(new StuOperator(),new HouseInterceptor()); <\/p>\n （2）\u5ba2\u6237\u7aef\u8c03\u7528\u4ee3\u7406\u65b9\u6cd5<\/p>\n proxy.operatorHouse(); <\/p>\n （3）\u4ee3\u7406\u6267\u884c\u6d41\u7a0b：<\/p>\n \/\/\u901a\u8fc7\u52a8\u6001\u7ed1\u5b9a \u8fd0\u884c\u6548\u679c\u5982\u4e0b：<\/p>\n \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb235\u6b21\uff0c\u70b9\u8d5e3\u6b21\uff0c\u6536\u85cf3\u6b21\u3002\u4f53\u73b0\u70b9\u5b9a\u4e49\u4e86\u521b\u5efa"\u4ea7\u54c1\u65cf"\u7684\u63a5\u53e3\uff08\u52a8\u7269\u548c\u98df\u7269\uff09\u4e0d\u5173\u5fc3\u5177\u4f53\u5b9e\u73b0\uff0c\u53ea\u58f0\u660e\u80fd\u521b\u5efa\u54ea\u4e9b\u7c7b\u578b\u7684\u4ea7\u54c1\u7b26\u5408"\u62bd\u8c61\u5de5\u5382"\u4e2d"\u62bd\u8c61"\u7684\u6982\u5ff5\u5728\u62bd\u8c61\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u6a21\u677f\u65b9\u6cd5\uff08\u6267\u884c\u6d41\u7a0b\u4e0d\u5e0c\u671b\u88ab\u6539\u53d8\uff0c\u7528final\u5173\u952e\u5b57\u4fee\u9970\uff0c\u8be5\u65b9\u6cd5\u4e0d\u88ab\u5b50\u7c7b\u7ee7\u627f\uff09\u3002\/\/\u5b9a\u4e49\u4e00\u4e2a\u6a21\u677f\u65b9\u6cd5\uff0c\u7528final\u5173\u952e\u5b57\u4fee\u9970\uff0c\u8be5\u65b9\u6cd5\u4e0d\u88ab\u5b50\u7c7b\u7ee7\u627fSystem.out.println("\u5de5\u4f5c\u5230\u70b9\u4e0b\u73ed");\/\/\u56de\u5bb6\u7684\u4ea4\u901a\u5de5\u5177\u4e0d\u4e00\u6837\uff0c\u62bd\u8c61\u65b9\u6cd5\uff0c\u7531\u5b50\u7c7b\u5b9e\u73b0System.out.println("\u5230\u5bb6\u4e86");<\/p>\n","protected":false},"author":2,"featured_media":52539,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,190,2874],"topic":[],"class_list":["post-52549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-java","tag-190","tag-2874"],"yoast_head":"\n\n
\npublic class ParseProperties {<\/p>\n
\n\/\/ private static ParseProperties p = new ParseProperties();<\/p>\n
\n private static ParseProperties p ;<\/p>\n
\n private ParseProperties()
\n {<\/p>\n
\n public static ParseProperties getInstance()
\n {
\n \/\/\u61d2\u6c49\u5f0f
\n if(null == p)
\n {
\n p = new ParseProperties();
\n }<\/p>\n
\n }<\/p>\n
\nimport java.io.FileNotFoundException;
\nimport java.io.FileReader;
\nimport java.io.IOException;
\nimport java.io.Reader;
\nimport java.util.Properties;<\/p>\n
\n private ParseProFile()
\n {
\n Properties p = new Properties();
\n try {<\/p>\n
\n p.load(reader);<\/p>\n
\n System.out.println(str);<\/p>\n
\n System.out.println(queryStuSql);<\/p>\n
\n e.printStackTrace();
\n } catch (IOException e) {
\n e.printStackTrace();
\n }<\/p>\n
\n {<\/p>\n
\n {
\n p = new ParseProFile(); \/\/\u53ea\u6709\u5728\u7b2c\u4e00\u6b21\u8c03\u7528getInstance()\u65f6\u624d\u521b\u5efa\u5b9e\u4f8b，\u800c\u4e0d\u662f\u5728\u7c7b\u52a0\u8f7d\u65f6\u5c31\u521b\u5efa\u3002
\n }<\/p>\n
\n}
\n\u5c5e\u6027\u6587\u4ef6：".\/src\/main\/java\/demo1\/demo.properties"
\nport=8090
\nqueryStuSQL=select * from t_stus
\npackage demo1;<\/p>\n
\n ParseProFile p2 = ParseProFile.getInstance();
\n ParseProFile p3 = ParseProFile.getInstance();<\/p>\n
\n System.out.println(p1==p2);
\n System.out.println(p2==p3);
\n }
\n \/\/ \u540e\u7eed\u8fd8\u9700\u8003\u8651\u7ebf\u7a0b\u5b89\u5168\u95ee\u9898
\n} <\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075419-6899a1ab9f3d7.png\")
<\/p>\n<\/p>\n\n
\n@Component
\nstruct ScrollPage {<\/p>\n
\n for(let i =0;i<100;i++)
\n {
\n this.arrs.push("\u7b2c" + i + "\u9879");
\n }
\n }<\/p>\n
\n console.log("\u52a0\u8f7d\u7684\u9879\u662f：" +index)
\n return item
\n }<\/p>\n
\n {
\n Column()
\n {
\n ForEach(this.arrs,(item:string,index:number)=>{
\n Row()
\n {
\n Text(this.loadItem(item,index)).fontSize(30)
\n }.width("100%").height("10%").backgroundColor("#aabbcc")
\n .margin({top:10}).borderRadius(20).justifyContent(FlexAlign.Center)
\n })
\n }<\/p>\n
\n} <\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075419-6899a1abbc0eb.png\")
<\/p>\n\n
\n@Component
\nstruct ListPage {
\n arrs: string[] = []<\/p>\n
\n for (let i = 0; i < 100; i++) {
\n this.arrs.push("\u7b2c" + i + "\u9879");
\n }
\n }<\/p>\n
\n console.log("\u52a0\u8f7d\u7684\u9879\u662f：" + index)
\n return item
\n }<\/p>\n
\n List() {
\n ForEach(this.arrs, (item: string, index: number) => {
\n ListItem() {
\n Text(this.loadItem(item, index)).fontSize(30)
\n }
\n .width("100%")
\n .height("10%")
\n .backgroundColor("#aabbcc")
\n .margin({ top: 10 })
\n .borderRadius(20)
\n })
\n }.width("100%").height("100%")
\n }<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075420-6899a1aca1df6.png\")
<\/p>\n\n
\u7279\u6027\u6076\u6c49\u5f0f\u61d2\u6c49\u5f0f<\/tr>\n \n\n \u521d\u59cb\u5316\u65f6\u673a<\/td>\n \u63d0\u524d\u52a0\u8f7d（\u5982\u00a0aboutToAppear\u00a0\u65f6\u5c31\u521d\u59cb\u5316）<\/td>\n \u6309\u9700\u52a0\u8f7d（\u5982\u6eda\u52a8\u5230\u67d0\u4e2a\u4f4d\u7f6e\u624d\u52a0\u8f7d）<\/td>\n<\/tr>\n \n \u5185\u5b58\u5360\u7528<\/td>\n \u53ef\u80fd\u5360\u7528\u8f83\u591a\u5185\u5b58（\u4e00\u6b21\u6027\u52a0\u8f7d\u6240\u6709\u6570\u636e）<\/td>\n \u8282\u7701\u5185\u5b58（\u4ec5\u52a0\u8f7d\u90e8\u5206）<\/td>\n<\/tr>\n \n \u6027\u80fd\u5f71\u54cd<\/td>\n \u9996\u6b21\u52a0\u8f7d\u53ef\u80fd\u8f83\u6162<\/td>\n \u6eda\u52a8\u65f6\u53ef\u80fd\u5361\u987f（\u52a8\u6001\u52a0\u8f7d）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u5de5\u5382\u6a21\u5f0f<\/span><\/h2>\n
\u62bd\u8c61\u5de5\u5382<\/h3>\n
\n
1.\u5b9a\u4e49\u4ea7\u54c1\u63a5\u53e3<\/h4>\n
\npublic interface Animal {
\n void makeSound();
\n void eat();
\n} <\/p>\n
\npublic interface Food {
\n void showNutrition();
\n} <\/p>\n2.\u5177\u4f53\u4ea7\u54c1\u5b9e\u73b0<\/h4>\n
\n @Override
\n public void makeSound() {
\n System.out.println("\u55b5\u55b5\u55b5~");
\n }<\/p>\n
\n public void eat() {
\n System.out.println("\u732b\u5728\u5403\u9c7c");
\n }
\n}
\npublic class Fish implements Food {
\n @Override
\n public void showNutrition() {
\n System.out.println("\u9c7c\u7c7b\u98df\u7269：\u5bcc\u542b\u86cb\u767d\u8d28\u548cOmega-3");
\n }
\n} <\/p>\n
\n @Override
\n public void makeSound() {
\n System.out.println("\u6c6a\u6c6a\u6c6a!");
\n }<\/p>\n
\n public void eat() {
\n System.out.println("\u72d7\u5728\u5543\u9aa8\u5934");
\n }
\n}
\npublic class Bone implements Food {
\n @Override
\n public void showNutrition() {
\n System.out.println("\u9aa8\u5934：\u5bcc\u542b\u9499\u8d28，\u6709\u52a9\u4e8e\u7259\u9f7f\u5065\u5eb7");
\n }
\n} <\/p>\n\n
3.\u5b9a\u4e49\u62bd\u8c61\u5de5\u5382\u63a5\u53e3<\/h4>\n
\n Animal createAnimal();
\n Food createFood();
\n} <\/p>\n\n
4.\u5177\u4f53\u5de5\u5382\u5b9e\u73b0<\/h4>\n
\n @Override
\n public Animal createAnimal() {
\n return new Cat();
\n }<\/p>\n
\n public Food createFood() {
\n return new Fish();
\n }
\n} <\/p>\n
\n @Override
\n public Animal createAnimal() {
\n return new Dog();
\n }<\/p>\n
\n public Food createFood() {
\n return new Bone();
\n }
\n} <\/p>\n\n
5.\u5ba2\u6237\u7aef\u4ee3\u7801<\/h4>\n
\n public static void main(String[] args) {
\n System.out.println("\u6b22\u8fce\u6765\u5230\u52a8\u7269\u519c\u573a\u6a21\u62df\u5668！");
\n System.out.println("\u8bf7\u9009\u62e9\u8981\u521b\u5efa\u7684\u519c\u573a\u7c7b\u578b：1. \u732b\u519c\u573a 2. \u72d7\u519c\u573a");<\/p>\n
\n int choice = scanner.nextInt();<\/p>\n
\n factory = new CatFarmFactory(); \/\/\u52a8\u6001\u7ed1\u5b9a
\n }
\n else if(choice == 2){
\n factory = new DogFarmFactory(); \/\/\u52a8\u6001\u7ed1\u5b9a
\n }<\/p>\n
\n Animal animal = factory.createAnimal();
\n Food food = factory.createFood();<\/p>\n
\n System.out.print("\u52a8\u7269\u884c\u4e3a：");
\n animal.makeSound();<\/p>\n
\n animal.eat();<\/p>\n
\n food.showNutrition();<\/p>\n
\n}<\/p>\n\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075421-6899a1adc5f62.png\")
<\/p>\n<\/p>\n\u9759\u6001\u5de5\u5382<\/h3>\n
\n
\n public void makeAnimal();
\n}
\npublic class AnimalFactory {<\/p>\n
\n public static Animal createAnimal(String name)
\n {
\n Animal an = null;<\/p>\n
\n {
\n an = new Dog();
\n }
\n if(name.equals("\u732b"))
\n {
\n an = new Cat();
\n }<\/p>\n
\n \/\/\u9762\u5411\u5bf9\u8c61\u89e3\u51b3\u4e0d\u4e86\u7684\u95ee\u9898，\u540e\u7eed\u901a\u8fc7\u9762\u5411\u53cd\u5c04\u624d\u53ef\u4ee5\u89e3\u51b3
\n return an;
\n }
\n}<\/p>\n
\n @Override
\n public void makeAnimal() {
\n System.out.println("\u751f\u4ea7\u732b");
\n }
\n}
\npublic class Dog implements Animal {
\n @Override
\n public void makeAnimal() {<\/p>\n
\n }
\n}
\npackage staticDemo;<\/p>\n
\n System.out.println("\u8bf7\u95ee\u60a8\u9700\u8981\u5236\u9020\u4ec0\u4e48\u52a8\u7269？");<\/p>\n
\n String inputValue = s.next();<\/p>\n
\n an.makeAnimal();
\n }
\n}<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae04434.png\")
<\/p>\n<\/p>\n\u6a21\u7248\u6a21\u5f0f<\/span><\/h2>\n
\n
1.\u62bd\u8c61\u7c7b\u5b9a\u4e49\u7b97\u6cd5\u9aa8\u67b6<\/h4>\n
\n public final void homeFrameWork()
\n {
\n this.work();
\n this.goHomeType();
\n this.goHome();
\n }<\/p>\n
\n {
\n System.out.println("\u5de5\u4f5c\u5230\u70b9\u4e0b\u73ed");
\n }<\/p>\n
\n public abstract void goHomeType();<\/p>\n
\n {
\n System.out.println("\u5230\u5bb6\u4e86");
\n }
\n} <\/p>\n2.\u5177\u4f53\u5b50\u7c7b\u5b9e\u73b0\u53ef\u53d8\u90e8\u5206<\/h4>\n
\n @Override
\n public void goHomeType() {
\n System.out.println("\u4e58\u5750\u534e\u4e3a\u6c7d\u8f66\u56de\u5bb6");
\n }
\n}
\npublic class XiaomiCar extends AbstractHome {
\n @Override
\n public void goHomeType() {
\n System.out.println("\u4e58\u5750\u5c0f\u7c73\u6c7d\u8f66\u56de\u5bb6");
\n }
\n} <\/p>\n3.\u5ba2\u6237\u7aef\u4f7f\u7528\u65b9\u5f0f<\/h4>\n
\n AbstractHome ah = new HuaweiCar();
\n\/\/ AbstractHome ah = new XiaomiCar();<\/p>\n
\n }<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae16124.png\")
<\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae2a654.png\")
<\/p>\n<\/p>\n\u7b56\u7565\u6a21\u5f0f<\/span><\/h2>\n
\u57fa\u4e8e\u9762\u5411\u5bf9\u8c61\u7684\u7b56\u7565\u6a21\u5f0f<\/h3>\n
\n
\n public void likeCategory(String type);
\n} <\/p>\n\n
\n @Override
\n public void likeCategory(String type) {<\/p>\n
\n }
\n}
\npublic class LikeType2 implements LikeGril {
\n @Override
\n public void likeCategory(String type) {<\/p>\n
\n }
\n}
\npublic class LikeType3 implements LikeGril {
\n @Override
\n public void likeCategory(String type) {<\/p>\n
\n }
\n} <\/p>\n\n
\n private LikeGril lg;<\/p>\n
\n public LikeContext(LikeGril lg)
\n {
\n this.lg = lg;
\n }<\/p>\n
\n public void setLg(LikeGril lg)
\n {
\n this.lg = lg;
\n }<\/p>\n
\n public void execCategory(String type)
\n {
\n this.lg.likeCategory(type);
\n }<\/p>\n\n
\n LikeContext lc1 = new LikeContext(new LikeType2());
\n lc1.execCategory("\u9999\u6c34");<\/p>\n
\n lc1.setLg(new LikeType3());
\n lc1.execCategory("\u7f8e\u98df");<\/p>\n
\n LikeContext lc2 = new LikeContext(new LikeType1());
\n lc2.execCategory("\u9c9c\u82b1");
\n }
\n}<\/p>\n\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae4ff26.png\")
<\/p>\n\u57fa\u4e8e\u9762\u5411\u51fd\u6570\u63a5\u53e3\u7684\u7b56\u7565\u6a21\u5f0f<\/h3>\n
\n
\npublic interface LikeGril {
\n public void likeCategory(String type);
\n} <\/p>\n
\n private LikeGril lg;<\/p>\n
\n public User(LikeGril lg)
\n {
\n this.lg = lg;
\n }<\/p>\n
\n public void execCategory(String type)
\n {
\n this.lg.likeCategory(type);
\n }<\/p>\n
\n u1.execCategory("\u9c9c\u82b1");<\/p>\n
\n u2.execCategory("\u7f8e\u98df");
\n } <\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae6ac7f.png\")
<\/p>\n<\/p>\n\u4ee3\u7406\u6a21\u5f0f<\/span><\/h2>\n
\u00a0 \u9759\u6001\u4ee3\u7406<\/h3>\n
\n
\n
\n public void operatorHouse();
\n} <\/p>\n
\npublic class StuOperator implements Operator {
\n @Override
\n public void operatorHouse() {
\n System.out.println("\u5b66\u751f\u60f3\u79df\u6709\u653f\u5e9c\u8865\u8d34\u7684\u516c\u79df\u623f");
\n }
\n} <\/p>\n
\npublic class Proxy implements Operator{<\/p>\n
\n public Proxy(Operator op,Interceptor in)
\n {
\n this.op = op;
\n this.in = in;
\n }<\/p>\n
\n public void operatorHouse() {<\/p>\n
\n \/\/\u524d\u7f6e\u62e6\u622a
\n this.in.beforeAction();
\n \/\/\u79df\u623f\u5b50
\n this.op.operatorHouse(); \/\/op\u4f20\u5165\u7684\u5bf9\u8c61\u7c7b\u578b\u7684\u53c2\u6570\u662fnew StuOperator(),\u6240\u4ee5\u76f8\u5f53\u4e8eStuOperator.operatorHouse()
\n \/\/\u540e\u7f6e\u62e6\u622a
\n this.in.afterAction();<\/p>\n
\n} <\/p>\n
\npublic interface Interceptor {
\n public void beforeAction();
\n public void afterAction();
\n}<\/p>\n
\n @Override
\n public void beforeAction() {
\n System.out.println("\u68c0\u67e5\u60a8\u7684\u8eab\u4efd\u8bc1\u548c\u653f\u5e9c\u7684\u6587\u4ef6");
\n }<\/p>\n
\n public void afterAction() {
\n System.out.println("\u68c0\u67e5\u60a8\u79df\u623f\u5b50\u7684\u8bbe\u5907\u548c\u5176\u5b83\u88c5\u4fee\u7684\u60c5\u51b5");<\/p>\n
\n} <\/p>\n
\n Proxy proxy = new Proxy(new StuOperator(),new HouseInterceptor()); \/\/\u4f20\u5165\u5bf9\u8c61\u7c7b\u578b\u7684\u53c2\u6570（\u771f\u5b9e\u7c7b，\u62e6\u622a\u7c7b）<\/p>\n
\n proxy.operatorHouse();<\/p>\n
\n} <\/p>\n
\n1. \u8c03\u7528\u62e6\u622a\u5668beforeAction()
\n2. \u8c03\u7528\u771f\u5b9e\u5bf9\u8c61\u7684operatorHouse()
\n3. \u8c03\u7528\u62e6\u622a\u5668afterAction() <\/p>\n![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250811075422-6899a1ae8bbb0.png\")
<\/p>\n","protected":false},"excerpt":{"rendered":"