<span style="font-size:18px;">代码清单16-8 修改后的Handler类
public abstract class Handler {
public final static int FATHER_LEVEL_REQUEST = 1;
public final static int HUSBAND_LEVEL_REQUEST = 2;
public final static int SON_LEVEL_REQUEST = 3;
//能处理的级别
private int level =0;
//责任传递，下一个人责任人是谁
private Handler nextHandler;
//每个类都要说明一下自己能处理哪些请求
public Handler(int _level){
this.level = _level;
}
//一个女性（女儿、妻子或者是母亲）要求逛街，你要处理这个请求
public final void HandleMessage(IWomen women){
if(women.getType() == this.level){
this.response(women);
}else{
if(this.nextHandler != null){ //有后续环节，才把请求往后递送
this.nextHandler.HandleMessage(women);
}else{ //已经没有后续处理人了，不用处理了
System.out.println("---没地方请示了，按不同意处理---\n");
}
}
}
/*
* 如果不属于你处理的请求，你应该让她找下一个环节的人，如女儿出嫁了，
* 还向父亲请示是否可以逛街，那父亲就应该告诉女儿，应该找丈夫请示
*/
public void setNext(Handler _handler){
this.nextHandler = _handler;
}
//有请示那当然要回应
protected abstract void response(IWomen women);
}</span>

<span style="font-size:18px;">代码清单16-9 父亲类
public class Father extends Handler {
//父亲只处理女儿的请求
public Father(){
super(Handler.FATHER_LEVEL_REQUEST);
}
//父亲的答复
protected void response(IWomen women) {
System.out.println("--------女儿向父亲请示-------");
System.out.println(women.getRequest());
System.out.println("父亲的答复是:同意\n");
}
}</span>

<span style="font-size:18px;">代码清单16-10 丈夫类
public class Husband extends Handler {
//丈夫只处理妻子的请求
public Husband(){
super(Handler.HUSBAND_LEVEL_REQUEST);
}
//丈夫请示的答复
protected void response(IWomen women) {
System.out.println("--------妻子向丈夫请示-------");
System.out.println(women.getRequest());
System.out.println("丈夫的答复是：同意\n");
}
}</span>

<span style="font-size:18px;">代码清单16-11 儿子类
public class Son extends Handler {
//儿子只处理母亲的请求
public Son(){
super(Handler.SON_LEVEL_REQUEST);
}
//儿子的答复
protected void response(IWomen women) {
System.out.println("--------母亲向儿子请示-------");
System.out.println(women.getRequest());
System.out.println("儿子的答复是：同意\n");
}
}</span>

<span style="font-size:18px;">public interface IWomen {
//获得个人状况
public int getType();
//获得个人请示，你要干什么？出去逛街？约会?还是看电影？
public String getRequest();
}</span>

<span style="font-size:18px;">代码清单16-12 女性类
public class Women implements IWomen{
/*
* 通过一个int类型的参数来描述妇女的个人状况
* 1--未出嫁
* 2--出嫁
* 3--夫死
*/
private int type=0;
//妇女的请示
private String request = "";
//构造函数传递过来请求
public Women(int _type,String _request){
this.type = _type;
//为了便于显示，在这里做了点处理
switch(this.type){
case 1:
this.request = "女儿的请求是：" + _request;
break;
case 2:
this.request = "妻子的请求是：" + _request;
break;
case 3:
this.request = "母亲的请求是：" + _request;
}
}
//获得自己的状况
public int getType(){
return this.type;
}
//获得妇女的请求
public String getRequest(){
return this.request;
}
}</span>

<span style="font-size:18px;">代码清单16-13 场景类
public class Client {
public static void main(String[] args) {
//随机挑选几个女性
Random rand = new Random();
ArrayList arrayList = new ArrayList();
for(int i=0;i<5;i++){
arrayList.add(new Women(rand.nextInt(4),"我要出去逛街"));
}
//定义三个请示对象
Handler father = new Father();
Handler husband = new Husband();
Handler son = new Son();
//设置请示顺序
father.setNext(husband);
husband.setNext(son);
for(IWomen women:arrayList){
father.HandleMessage(women);
}
}
}  </span>