有關(guān)net的mvc工廠模式各層間調(diào)用關(guān)系-資料下載頁(yè)
2025-06-19 04:07本頁(yè)面
【正文】 = SQL)factory = new SQLDALFactory()。if(dbName == Oracle)factory = new OracleDALFactory()。return factory。}}// SQL 產(chǎn)品線public class SQLDALFactory : AbstractFactory{public override IUserManager CreateUserManager(){return new SQLUserManager()。}public override IStudentManager CreateStudentManager(){return new SQLStudentManager()。}}// Oracle 產(chǎn)品線public class OracleDALFactory : AbstractFactory{public override IUserManager CreateUserManager(){return new OracleUserManager()。}public override IStudentManager(){return new OracleStudentManager()。}}定義好產(chǎn)品線和對(duì)應(yīng)的產(chǎn)品，BLL 層取得對(duì)應(yīng)對(duì)象時(shí)，仍然使用接口的引用指向?qū)?yīng)的DAL 對(duì)象 IUserManager ium = ().CreateUserManager()。
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