[设计模式]依赖倒转原则

Posted 2021-06-27 Wecccccccc

代码如下:

#include <iostream>
#include <string>

using namespace std;

//银行工作人员
class BankWorker
{
public:
	void saveService()
	{
		cout << "办理存款业务" << endl;
	}
	void payService()
	{
		cout << "办理支付业务" << endl;
	}
	void transferService()
	{
		cout << "办理转账业务" << endl;
	}
};


//中层模块
void doSaveBussiness(BankWorker *worker)
{
	worker->saveService();
}

void doPayBussiness(BankWorker *worker)
{
	worker->payService();
}

void doTransferBussiness(BankWorker *worker)
{
	worker->transferService();
}


void test01()
{
	BankWorker *worker = new BankWorker;
	doSaveBussiness(worker);
	doPayBussiness(worker);
	doTransferBussiness(worker);
}

int main()
{
	test01();
	return 0;
}

依赖倒转原则

代码如下:

#include <iostream>
#include <string>

using namespace std;

class AbstractWorker
{
public:
	virtual void doBusiness() = 0;
};

class SaveBankWorker :public AbstractWorker
{
public:
	virtual void doBusiness()
	{
		cout << "办理存款业务" << endl;
	}
};

class PayBankWorker :public AbstractWorker
{
public:
	virtual void doBusiness()
	{
		cout << "办理支付业务" << endl;
	}
};

class TransferBankWorker :public AbstractWorker
{
public:
	virtual void doBusiness()
	{
		cout << "办理转账业务" << endl;
	}
};


//中层模块
void doNewBusiness(AbstractWorker *worker)
{
	worker->doBusiness();
	delete worker;
}


void test01()
{
	doNewBusiness(new TransferBankWorker);
	doNewBusiness(new PayBankWorker);
	doNewBusiness(new SaveBankWorker);
}

int main()
{
	test01();
	return 0;
}

测试结果: