软件设计-简单工厂模式

使用简单工厂模式模拟女娲(Nvwa)造人(Person)，如果传入参数M，则返回一个Man对象，如果传入参数W，则返回一个Woman对象，如果传入参数R，则返回一个Robot对象。请用程序设计实现上述场景。

类图：

 

Java

 

package SFP;

/**
 * 简单工厂模式
 */

//女娲造人工厂
public class NvwaPersonFactory {

    //抽象类--人类
    public abstract class Person{
        public void birth(){}
    }

    //具体产品类
    public class Man extends Person{
        @Override
        public void birth(){
            System.out.println("女娲造男人。");
            super.birth();
        }
    }
    public class Woman extends Person{
        @Override
        public void birth(){
            System.out.println("女娲造女人。");
            super.birth();
        }
    }
    public class Robot extends Person{
        @Override
        public void birth(){
            System.out.println("女娲造机器人。");
            super.birth();
        }
    }

    //造人
    public Person getPerson(String type) {
        Person Person = null;
        if (type.equalsIgnoreCase("M")) {
            Person = new Man();
        } else if (type.equalsIgnoreCase("W")) {
            Person = new Woman();
        } else if (type.equalsIgnoreCase("R")) {
            Person = new Robot();
        }
        return Person;
    }

    public static void main(String[] args) {//入口
        Person person;
        NvwaPersonFactory nvwaPersonFactory = new NvwaPersonFactory();

        person = nvwaPersonFactory.getPerson("M");
        person.birth();
        person = nvwaPersonFactory.getPerson("W");
        person.birth();
        person = nvwaPersonFactory.getPerson("R");
        person.birth();
    }
}

C++

 

#include <iostream>
using namespace std;

/**
 * 简单工厂模式
 */

class Person {
public:
    virtual void make() {
        cout << "女娲造人" << endl;
    }
};

class Woman :public Person {
public:
    void make() {
        cout << "女娲造女人" << endl;
    }
};

class Man :public Person {
public:
    void make() {
        cout << "女娲造男人" << endl;
    }
};

class Robot :public Person {
public:
    void make() {
        cout << "女娲造机器人" << endl;
    }
};

class Nvwa {
public:
    Person* makePerson(string type) {
        Person* person;
        if (type == "W" || type == "w") {
            Woman person1;
            person = &person1;
        }
        else if (type == "M" || type == "m") {
            Man person1;
            person = &person1;
        }
        else if (type == "R" || type == "r") {
            Robot person1;
            person = &person1;
        }
        else if (type == "0") {
            cout << "退出" << endl;
            Person person1;
            person = &person1;
        }
        else {
            cout << "不能乱输嗷！" << endl;
            Person person1;
            person = &person1;
        }
        return person;
    }
};

int main(){
    string str = "";
    Nvwa nv;
    Person* person;
    do {
        cout << "输入W、M、R  让女娲造人,输入0结束" << endl;
        cin >> str;
        person = nv.makePerson(str);
        person->make();
    } while (str != "0");
    return 0;
}