fix code style#62
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wsxe9988 wants to merge 1 commit intoalibaba:mainfrom
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"null".equalsIgnoreCase(str)这种写法对可读性不好，这个不用改 |
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我是计划想把这些null等这种魔法值 抽取出来做为常量 |
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嗯，那我关掉这个pr |
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解决 Object的equals方法容易抛空指针异常，应使用常量或确定有值的对象来调用equals的问题