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In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.后来板栗和葫芦回来，又是一番悲喜交集，其情形也不必一一叙述。8060 +8060X30% +8060X15% +1000=12678冒险始于1906年的旧金山，文学评论家汉弗莱在萨克拉门托渡轮。此后不久，在大雾中轮船与一货运船舶相撞。汉弗莱在水中漂流，半死不活最后被帆船“鬼”救起。 这个猎人“鬼”听令于拉森，拉森将太平洋航行看作最喜欢的狩猎场，他是残酷的队长，没有任何同情心，他愤怒地拒绝把汉弗莱救上岸。为了生存，汉弗莱必须尽快适应航海世界无情而粗暴的法则。Red 50%　　活也好，在哪还不是一样。