11.23总结

package memento;

public class Memento {
private String account;
private String password;
private String telNo;

public Memento(String account, String password, String telNo) {
    this.account = account;
    this.password = password;
    this.telNo = telNo;
}

public String getAccount() {
    return account;
}

public void setAccount(String account) {
    this.account = account;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public String getTelNo() {
    return telNo;
}

public void setTelNo(String telNo) {
    this.telNo = telNo;
}

}

package memento;

public class UserInfoDTO {
private String account;
private String password;
private String telNo;

public String getAccount() {
    return account;
}

public void setAccount(String account) {
    this.account = account;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public String getTelNo() {
    return telNo;
}

public void setTelNo(String telNo) {
    this.telNo = telNo;
}

public Memento saveMemento(){
    return new Memento(account,password,telNo);
}
public void restoreMemento(Memento memento) {
    this.account=memento.getAccount();
    this.password=memento.getPassword();
    this.telNo=memento.getTelNo();
}
public void show() {
    System.out.println("Account:"+this.account);
    System.out.println("Password:"+this.password);
    System.out.println("TelNo:"+this.telNo);
}

}

package memento;

import java.util.ArrayList;
import java.util.List;

public class Caretaker {
private List list = new ArrayList<>();

public Memento getMemento(){
    Memento m = list.get(list.size()-1);
    list.remove(list.size()-1);
    return m;
}

public void setMemento(Memento m){
    list.add(m);
}

}

package memento;

public class Client {
public static void main(String[] args) {
UserInfoDTO user = new UserInfoDTO();
Caretaker caretaker = new Caretaker();

    user.setAccount("张三");
    user.setPassword("123456");
    user.setTelNo("11111111111");
    System.out.println("状态一:");
    user.show();
    caretaker.setMemento(user.saveMemento());
    System.out.println("----------------------------------");
    user.setPassword("222222");
    user.setTelNo("11111112222");
    System.out.println("状态二");
    user.show();
    caretaker.setMemento(user.saveMemento());
    System.out.println("----------------------------------");
    user.setPassword("333333");
    user.setTelNo("11111113333");
    System.out.println("状态三");
    user.show();
    caretaker.setMemento(user.saveMemento());
    System.out.println("----------------------------------");
    user.setPassword("444444");
    user.setTelNo("11111114444");
    System.out.println("状态四");
    user.show();
    caretaker.setMemento(user.saveMemento());
    System.out.println("----------------------------------");
    user.setPassword("555555");
    user.setTelNo("11111115555");
    System.out.println("状态五");
    user.show();
    caretaker.setMemento(user.saveMemento());
    System.out.println("----------------------------------");

    user.restoreMemento(caretaker.getMemento());
    System.out.println("回到状态五：");
    user.show();
    System.out.println("----------------------------------");
    user.restoreMemento(caretaker.getMemento());
    System.out.println("回到状态四：");
    user.show();
    System.out.println("----------------------------------");
    user.restoreMemento(caretaker.getMemento());
    System.out.println("回到状态三：");
    user.show();
    System.out.println("----------------------------------");
    user.restoreMemento(caretaker.getMemento());
    System.out.println("回到状态二：");
    user.show();
    System.out.println("----------------------------------");
    user.restoreMemento(caretaker.getMemento());
    System.out.println("回到状态一：");
    user.show();
    System.out.println("----------------------------------");
}

}

include

include

using namespace std;

class Memento {
private:
string account;
string pwd;
string tel;
public:
string getAccount() {
return account;
}

void setAccount(string account) {
    this->account = account;
}

string getPwd() {
    return pwd;
}

void setPwd(string pwd) {
    this->pwd = pwd;
}

string getTel() {
    return tel;
}

void setTel(string tel) {
    this->tel = tel;
}

Memento(string account, string pwd, string tel) {
    this->account = account;
    this->pwd = pwd;
    this->tel = tel;
}

};

class UserInfo {
private:
string account;
string pwd;
string tel;
public:
string getAccount() {
return account;
}

void setAccount(string account) {
    this->account = account;
}

string getPwd() {
    return pwd;
}

void setPwd(string pwd) {
    this->pwd = pwd;
}

string getTel() {
    return tel;
}

void setTel(string tel) {
    this->tel = tel;
}

Memento *saveMemento() {
    return new Memento(account, pwd, tel);
}

void restoreMemento(Memento *memento) {
    this->account = memento->getAccount();
    this->pwd = memento->getPwd();
    this->tel = memento->getTel();
}

void show() {
    cout << "account:" << this->account << endl;
    cout << "pwd:" << this->pwd << endl;
    cout << "tel:" << this->tel << endl;
}

};

class Caretaker {
private:
list<Memento *> list;
public:
Memento *getMemento() {
list.pop_front();
Memento *m = list.front();
return m;
}

void setMemento(Memento *m) {
    list.push_front(m);
}

};

int main() {
UserInfo *user = new UserInfo();
Caretaker *c = new Caretaker();
user->setAccount("张三");
user->setPwd("123456");
user->setTel("1310000000");
cout<<"状态一:"<<endl;
user->show();
c->setMemento(user->saveMemento());
cout<<"-----------------------------"<<endl;

user->setPwd("111111");
user->setTel("1310001111");
cout<<"状态二:"<<endl;
user->show();
c->setMemento(user->saveMemento());
cout<<"-----------------------------"<<endl;

user->setPwd("zyx666");
user->setTel("15733333333");
cout<<"状态三:"<<endl;
user->show();
c->setMemento(user->saveMemento());
cout<<"-----------------------------"<<endl;

user->setPwd("777777");
user->setTel("15511111111");
cout<<"状态四:"<<endl;
user->show();
c->setMemento(user->saveMemento());
cout<<"-----------------------------"<<endl;

user->setPwd("666666");
user->setTel("17455555555");
cout<<"状态五:"<<endl;
user->show();
c->setMemento(user->saveMemento());
cout<<"-----------------------------"<<endl;


user->restoreMemento(c->getMemento());
cout<<"回到状态四:"<<endl;
user->show();
cout<<"-----------------------------"<<endl;

user->restoreMemento(c->getMemento());
cout<<"回到状态三:"<<endl;
user->show();
cout<<"-----------------------------"<<endl;

user->restoreMemento(c->getMemento());
cout<<"回到状态二:"<<endl;
user->show();
cout<<"-----------------------------"<<endl;

user->restoreMemento(c->getMemento());
cout<<"回到状态一:"<<endl;
user->show();
cout<<"-----------------------------"<<endl;
return 0;

}