设计模式之美：Chain of Responsibility（职责链）(二)
Request request1 = new ConcreteRequest1();
108 Request request2 = new ConcreteRequest2();
109
110 Handler handler2 = new ConcreteHandler2();
111 Handler handler1 = new ConcreteHandler1(handler2);
112
113 handler1.Handle(request1);
114 handler1.Handle(request2);
115 }
116 }
117 }