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很快一个中年，有些富态的女人打开了门。主人公外山厚志是个胆小鬼，他被好友告知女高中生妮娜被绑架，挺身冒险将其解救后，竟发现绑架案的主谋是校内的不良少年！扬言要成为妮娜保镖的外山厚志，不知不觉中对妮娜产生了爱慕之情……Barry Allen在11岁的时候，他的母亲死于一次离奇的恐怖事故，而他父亲更被错误指认为凶手，而他父亲的挚友，警探Joe West领养了他。现在Barry Allen已成为一个聪明﹑上进﹑讨喜的CSI鉴证分析员，与此同时他为了调查母亲死亡的真相，于是追踪起各种都市传说，也同时见识了先进的科技。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.只是……田夫子打断他话，温声对红椒道：为师替你作一幅画如何？就画这秋日清晨的小青山，带着朦朦雾气的景象。民国期间，由四个性格迥异的少年组成了少年侦探社，他们破解重重谜团，名声大震，然而这所有的案件似乎都没有表面上那么简单，上一代的恩怨情仇也慢慢浮现，侦探社四个成员之间的关系也开始错综复杂……