原博文地址：https://blog.csdn.net/everest_man/article/details/78985879
1.官网下载 Ultimate版本
2.http://idea.lanyus.com/ 下载 JetbrainsCrack-3.1-release-enc.jar 或其他版本
3.将上面的jar放入idea安装的bin目录下
4.修改bin目录下的两个文件：idea.exe.vmoptions 和 idea64.exe.vmoptions ，文件末尾添加一行：
-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2018.2.6\bin\JetbrainsCrack-3.1-release-enc.jar
(这个路径就是上面那个jar包的路径，每个人的安装目录可能不一样，要注意，如遇到无法保存问题，可以先将文件剪切出来，改完之后再放进去。)
5.启动idea，在active code中，输入以下内容：
ThisCrackLicenseId-{ “licenseId”:”ThisCrackLicenseId”, “licenseeName”:”idea”, “assigneeName”:”“, “assigneeEmail”:”idea@163.com”, “licenseRestriction”:”For This Crack, Only Test! Please support genuine!!!”, “checkConcurrentUse”:false, “products”:[ {“code”:”II”,”paidUpTo”:”2099-12-31”}, {“code”:”DM”,”paidUpTo”:”2099-12-31”}, {“code”:”AC”,”paidUpTo”:”2099-12-31”}, {“code”:”RS0”,”paidUpTo”:”2099-12-31”}, {“code”:”WS”,”paidUpTo”:”2099-12-31”}, {“code”:”DPN”,”paidUpTo”:”2099-12-31”}, {“code”:”RC”,”paidUpTo”:”2099-12-31”}, {“code”:”PS”,”paidUpTo”:”2099-12-31”}, {“code”:”DC”,”paidUpTo”:”2099-12-31”}, {“code”:”RM”,”paidUpTo”:”2099-12-31”}, {“code”:”CL”,”paidUpTo”:”2099-12-31”}, {“code”:”PC”,”paidUpTo”:”2099-12-31”} ], “hash”:”2911276/0”, “gracePeriodDays”:7, “autoProlongated”:false}
active code不行的话，用这个重新生成试试。
http://idea.lanyus.com/