设计模式 抽象工厂方法

先写User 原型类

package User;

public class User {
	
	private int _id;
	private String _name;
	
	
	public int get_id() {
		return _id;
	}
	public void set_id(int _id) {
		this._id = _id;
	}
	public String get_name() {
		return _name;
	}
	public void set_name(String _name) {
		this._name = _name;
	}

	 
}

在写User访问的具体接口

package User;
public interface IUser {
	void Insert(User user);
	User GetUser(int id); 
}

再写访问User的具体实现

package User;
public class AccessUser implements IUser {

	@Override
	public void Insert(User user) {
		// TODO Auto-generated method stub
		System.out.println("在access中给User表添加一条记录");
	}

	@Override
	public User GetUser(int id) {
		// TODO Auto-generated method stub
		System.out.println("在access中根据ID得到User一条记录");
		return null;
	}

}

package User;
public class SqlserverUser implements IUser {

	public void Insert(User user)
	{
		System.out.println("再sql server中给User表增加一条记录");
	}
	public User GetUser(int id)
	{
		System.out.println("在sql server中根据ID得到User表一条记录");
		return null;
	}

}

再写工厂方法类

package factory;
import User.IUser;

public interface IFactory {
	IUser CreateUser();
}

再写抽象方法的实现

package factory;

import User.IUser;
import User.SqlserverUser;

public class SqlServerFacory implements IFactory {

	@Override
	public IUser CreateUser() {
		// TODO Auto-generated method stub
		return new SqlserverUser();
	}

}

package factory;

import User.AccessUser;
import User.IUser;

public class AccessFactory implements IFactory {

	@Override
	public IUser CreateUser() {
		// TODO Auto-generated method stub
		return new AccessUser();
	}

}

再写测试类

import User.IUser;
import User.SqlserverUser;
import User.User;
import factory.IFactory;
import factory.SqlServerFacory;

public class program {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		User user=new User();
		IFactory factory=new SqlServerFacory();
		IUser iUser=factory.CreateUser();
		
		iUser.Insert(user);
		iUser.GetUser(1);
		
	}

}