📄 userdaofactory.java
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package com.bjsxt.spring.dao;
public class UserDaoFactory {
private static UserDaoFactory instance = new UserDaoFactory();
private UserDaoFactory() {
//我们可以读取配置文件,通过反射进行装载
}
public static UserDaoFactory getInstance() {
return instance;
}
public UserDao createUserDao() {
return new UserDao4MySqlImpl();
}
}
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