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Publish-subscribe mode is also called observer mode. It defines a one-to-many relationship between objects, allowing multiple observer objects to monitor a topic object at the same time. When an object changes, all objects that depend on it will be notified.曾斩杀白蛇一条，起兵反秦。林小冉被迫答应杜衡做替身嫁给已毁容的薄谦之，入住薄家后。薄谦之识出妻子真实身份，假扮弟弟骗取她的信任，从她身上获得了久未感受到的温暖。林小冉无意间得知薄谦之没有弟弟的存在，她希望薄谦之可以活得轻松点，薄谦之对她仍是十分防备，真相一层层剥开，更大的阴谋席卷而来。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.当一个拥有爱情洁癖却又向往婚姻生活的求爱剩女遇上一个让每个女人都至爱至恨的滥情渣男，会有什麽样的结局？是求爱剩女放下对爱情、对婚姻的坚持，成为滥情渣男的爱情俘虏之一？还是求爱剩女能够终结滥情战胜渣男！成功的让滥情渣男漂白成为优质好男人？于是一场势均力敌僵持不下，不分输赢绝不收手的爱情战争就此展开……旺拉见到了收藏家的代理律师邱胜男（李嘉欣 饰），然而，当两人来到收藏家的家中时，却发现收藏家已经被早一步到达的罗桑杀死，金瓶亦被抢走。旺拉当然不能让罗桑的阴谋得逞，两人之间展开了激烈的争斗。可惜旺拉不敌诡计多端的罗桑，被俘性命悬于一线。就在此时，罗桑和邱胜男的心灵相通，爆发出了强大的力量。田小甜因为销售假冒伪劣产品被人举报，直播平台关闭了她的直播间。跌进谷底的田小甜看着风生水起的甄兵兵更是妒火中烧，她在网上发布了很多甄兵兵的负面新闻并且大肆宣扬。甄兵兵的公众形象瞬间一落千丈，为了保住公司的荣誉，公司只好暂时关闭了甄兵兵的直播间。甄兵兵和田小甜约出来吃饭谈心，甄兵兵无意间发现，在网络上造谣中伤自己的正是最好的姐妹田小甜。得知真相后的甄兵兵拎着几瓶酒去找郑嘉楠买醉，向他倾诉自己心中的委屈。不料喝醉酒的郑嘉楠却说出了一个更惊人的秘密：郑嘉楠就是微博上的“黑熊怪”，也就是最开始黑甄兵兵的人！