模拟实现类:

1 /** 2  *责任链模式: 将处理同一类事务的所有对象按次序连接在一起（就像连成一条锁链一样）， 3  * 依次去处理待定事务，如果该对象处理不了，就传给其后的对象来处理 4  */ 5 public abstract class Leader { 6     public Leader(String  name, Leader nextLeader){ 7         this.name = name; 8         this.nextLeader = nextLeader; 9     }10 11     public void setNextLeader(Leader nextLeader){12         this.nextLeader = nextLeader;13     }14 15     public abstract void handleRequest(LeaveRequest request);16 17     protected String name;18     protected Leader nextLeader;19 }20 21 class Director extends Leader{22     public Director(String name, Leader nextLeader){23         super(name, nextLeader);24     }25 26     @Override27     public void handleRequest(LeaveRequest request) {28         if(request.getDay() <= 5){29             System.out.println(name + "Director: OK!");30         } else{31             if(nextLeader != null){32                 nextLeader.handleRequest(request);33             }34         }35     }36 }37 38 class Manager extends Leader{39     public Manager(String name, Leader nextLeader){40         super(name, nextLeader);41     }42 43     @Override44     public void handleRequest(LeaveRequest request) {45         if(request.getDay() <= 10){46             System.out.println(name + "Manager: OK!");47         } else{48             if(nextLeader != null){49                 nextLeader.handleRequest(request);50             }51         }52     }53 }54 55 class GeneralManager extends Leader{56     public GeneralManager(String name){57         super(name, null);58     }59 60     @Override61     public void handleRequest(LeaveRequest request) {62         System.out.println(name + "GeneralManager: OK!");63     }64 }

1 public class LeaveRequest { 2     public LeaveRequest(String name, int day, String reason){ 3         this.name = name; 4         this.day = day; 5         this.reason = reason; 6     } 7  8     public String getName() { 9         return name;10     }11 12     public void setName(String name) {13         this.name = name;14     }15 16     public int getDay() {17         return day;18     }19 20     public void setDay(int day) {21         this.day = day;22     }23 24     public String getReason() {25         return reason;26     }27 28     public void setReason(String reason) {29         this.reason = reason;30     }31 32     private String name;33     private int day;34     private String reason;35 }

测试类:

1 public class Test{2     public static void main(String[] args){3         Leader leader1 = new GeneralManager("张三");4         Leader leader2 = new Manager("李四", leader1);5         Leader leader3 = new Director("王五", leader2);6         leader3.handleRequest(new LeaveRequest("小李", 7, "结婚"));7     }8 }