IntelliJ IDEA 注册码：
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如果在验证上述注册码的过程中，显示此注册码已经被取消，则可以通过在hosts文件中，添加
0.0.0.0 account.jetbrains.com- 1
构造映射关系，来解决此问题。如果大家对hosts文件不太了解，不知道如何修改此文件，则可以通过阅读「详述 hosts 文件的作用及修改 hosts 文件的方法」了解详情。
温馨提示：此注册码的有效期截止于 2018 年 10 月 14 日，来自于「lanyu」，在此表示深深的谢意。