设计模式第二次作业

public class client {
public static void main(String[] args) {
player myplayer = new player();
playerImpl play = new AVI();
myplayer.setplayerImpl(play);
myplayer.play("play the video");
}
}

//Abstraction 定义抽象类接口
public abstract class player {
protected playerImpl play;
public void setplayerImpl(playerImpl play)
{
this.play=play;
}
public  abstract void play(String fileName);
}

//implementor 抽象实现类接口
public interface playerImpl {
public void playImpl(String type, String fileName);
}

//RefineAbstraction 扩充由Abstraction定义的接口
public class windows extends player{
public void play(String fileName) {
String type = "Windows播放";
this.play.playImpl(type,fileName);
}
}

//Concretelmplementor具体实现类
public class AVI implements playerImpl{
@Override
public void playImpl(String type, String fileName) {
System.out.println("windows播放AVI");
}
}

//通过Component接口组合部件的对象
public class client {
public static void main(String[] args) {
AntiVirus text=new TextFile();
text.KillAntVirus();
AntiVirus folder=new Folder();
((FolderFile) folder).add(new TextFile());
((FolderFile) folder).add(new VideoFile());
((FolderFile) folder).add(new ImageFile());
folder.KillAntVirus();
}
}

//Component声明接口
public abstract class AntiVirus {
public abstract void KillAntVirus();
}

//Leaf叶节点对象
public class TextFile extends AntiVirus{
@Override
public void KillAntVirus() {
System.out.println("杀死TextFile类型文件");
}
}

//Composite有子部件的部件
public class Folder extends AntiVirus{
public void addFile(AntiVirus av)
{
list.add(av);
}

public void removeFile(AntiVirus av)
{
list.remove(av);
}

private ArrayList list=new ArrayList<>();
public void KillAntVirus() {
for(int i = 0 ; i < list.size() ; i++) {
((AntiVirus) list.get(i)).KillAntVirus();
}
}
}

public class client {
public static void main(String[] args) {
String str = "今天八点开会";

Encryption simpleEncry = new shiftEncryption();

Encryption revEncry = new reverseEncryDecrator(simpleEncry);

Encryption modEncry = new moduloEncryDecrator(simpleEncry);

simpleEncry.encryString(str);

revEncry.encryString(str);//简单加密

revEncry.reverseString(str);//二次逆向输出加密
}
}

//数据加密接口
public abstract class Encryption{
public abstract String encryString(String str);
}

//简单移位加密
public class shiftEncryption extends Encryption{
@Override
public String encryptStr(String  str) {
char[] froms=str.toCharArray();
int length = froms.length;
for(int i=0;i<length/2;i++){
char temp = froms[i];
froms[i] = froms[length - 1 -i];
froms[length - 1 -i] = temp;
}
return String.valueOf(froms);
}
}

//稍复杂加密运算接口
public class EncryDecrator extends Encryption{
private Encryption encrypt;

public EncryDecrator(Encryption encrypt){
this.encrypt = encrypt;
}

@Override
public String encryptStr(String str) {
return encrypt.encryString(str);
}
}

//逆向输出加密
public class reverseEncryDecrator extends EncryDecrator{
public reverseEncryDecrator(Encryption encrypt) {
super(encrypt);
}
@Override
public String encryString(String str) {
return this.reverseString(super.encryString(str));
}
private String reverseString(String str) {
StringBuffer sbf=new StringBuffer(str);
sbf=sbf.reverse();//字符串的翻转
return sbf.toString();
}

}

public class client {
public static void main(String[] args) {
private FileEncrypt fileEncrypt;

fileEncrypt = new FileEncrypt();
fileEncrypt.encryFile();
}
}

//Facade 所有请求委派的接口
public abstract class FileEncrypt{
private ReadFile fileReader = new ReadFile();
private Encryption encryption = new Encryption();
private SaveFile fileSaver = new SaveFile();

public void encryFile(){
fileReader.readFile();
encryption.encryption();
fileSaver.saveFile();
}
}

//SubSystemA 读取文件操作
public class ReadFile extends FileEncrypt{
public void readFile(){
System.out.println("reading");
}
}

//SubSystemB 加密文件操作
public class Encryption extends FileEncrypt{
public void encryption(){
System.out.println("encryption");
}
}

//SubSystemC 保存文件操作
public class SaveFile extends FileEncrypt{
public void saveFile(){
System.out.println("saving");
}
}

public abstract class ForumUser {
public abstract void modifyUserinfo();
public abstract void modifyPost();
public abstract void Post();
public abstract void ReadPost();
}

//Proxy 代理类
public class Proxy extends ForumUser{
private User user;
private int userType;
public Proxy(User user){
this.user=user;
this.userType=user.getUserType();//1代表注册用户，0代表游客
}
public void modifyUserinfo(){
if(this.userType==1)
user.modifyUserinfo();
else if(this.userType==0)
System.out.println("没有权限");
}
public void modifyPost(){
if(this.userType==1)
user.modifyPost();
else if(this.userType==0)
System.out.println("没有权限");
}
public void Post(){
if(this.userType==1)
user.Post();
else if(this.userType==0)
System.out.println("没有权限");
}
public void ReadPost(){
user.ReadPost();
}
}

//RealSubject 真实实体类
public class User extends ForumUser{
private String userType;
public void setUserType(Interger type){
this.userType=type;
}
public void modifyUserinfo(){
System.out.println("修改用户个人信息");
}
public void modifyPost(){
System.out.println("修改个人贴子");
}
public void Post(){
System.out.println("发布贴子");
}
public void ReadPost(){
System.out.println("浏览贴子");
}
}

//用户调用
public class Tourist{
public static void main(String[] args) {
User userA=new User();
User userB=new User();
userA.setuserType(0);// 0代表游客
userB.setuserType(1);//1代表注册用户
Proxy proxyA=Proxy(userA);//游客代理
Proxy proxyB=Proxy(userB);//注册用户代理
proxyA.modifyUserinfo();
proxyB.modifyPost();
}
}