idea在登錄界面激活需要License code
激活方式：License Server
1、將地址 http://active.chinapyg.com/ 或者 http://idea.toocruel.net 任意一個複製到License Server中
2、激活完成
轉載方式：https://blog.csdn.net/zhw0596/article/details/81394870
20181113註冊碼：
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2018.12.05註冊碼：
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有效期到2020年
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實在不行的，請從http://idea.lanyus.com/破解網站破解
1、進入hosts文件中：C:\Windows\System32\drivers\etc\hosts
win10沒有權限，修改時，則修改權限，2從記事本打開
可以通過如下方法修改hosts文件。
1、開始——所有應用——windows附件——記事本，右鍵選擇“以管理員身份運行“。
2、點擊記事本的“文件”——“打開”。
3、在彈出的窗口中右下角下拉菜單選擇“所有文件”，然後依次找到X:\windows\system32\drivers\etc\hosts文件，X表示系統盤，一般是C盤。
4、選擇hosts文件，點擊“打開”即可修改或者查看hosts文件了。
2、將“0.0.0.0 account.jetbrains.com”添加到hosts文件中
注意：添加只有重新打開hosts文件進行確認之後在進行下一步操作。
修改成功後如圖所示：
注：將這條數據加入之後會提示保存，然後確認之後，重新打開hosts文件確認是否添加成功，有時候會提示確認兩次。
3、點擊獲得註冊碼，然後將註冊碼複製，粘貼到IDEA中
