ashop in

I. Issues　1.SPRING-DATA-MONGODB User name Password login error problem: Failed to authenticate to databaseOrg. springframework. Data. MongoDB. Cannotgetmongodbconnectionexception:failed to authenticate to database [AShop], username = [AShop], password = [g******** ***4]org. springframework. Data. MongoDB. Core. Reflectivedbinvoker. Authenticate (Reflectivedbinvoker. Java:) org. springframework. Data. MongoD

SimpleFactory. app. IFactroy; using System. collections. generic; using System. linq; using System. text; namespace SimpleFactory. app. public class Ashop: Ishop creation of product {// A type store, days * Unit Price + performance * 0.005 // 3. Create a B-type store: Using SimpleFactory. app. IFactroy; using System. collections. generic; using System. linq; using System. text; namespace SimpleFactory. app. product {// 4. After creating a number-ty

(). ToLower ()) {case "AShop": return new AShop (); Case "Bshop": return new AShop (); Default: throw new Exception ("The store does not exist");}}} 5. Then, judging by the current store type, which algorithm should be used for that type of store: Using simplefactory.app.factorymethod;using simplefactory.a

SimpleFactory.App.factoryMethod {public class FactoryMethod {public ishop createshow ( String Show } { switch (show). Trim (). ToLower ()) {case ' ashop ': Return to new AShop (); Case "Bshop": Return to new AShop (); Default: throw new Exception ("The store does not exist");}}

interface is connected!"); } Public voidFly () {System.out.println ("Connected to the bird interface!"); }}4, using the interface to achieve polymorphismPolymorphism in Java is a difficult concept to understand, but it is also a very important concept. One of the three major features of Java (inheritance, encapsulation, polymorphism), we can literally understand: is a type of multiple states, the following by selling a car example shows what is polymorphic.Case://using interfaces to achieve

:" + car.getprice ()); Increase the selling price of the car revenue money + = Car.getprice (); ///Sales total revenue public int Getmoney () {return money; public static void Main (string[] args) {Carshop ashop = new Carshop (); Sell a BMW Ashop.sellcar (new BMW ()); Sell a Chery QQ Ashop.sellcar (New Cheryqq ()); System.out.println ("gross income:" + Ashop.getmoney ()); } } Run Result: Model: BMW Price: 300000Model