1、https://link.jianshu.com/?t=http://idea.lanyus.com/，下载JetbrainsCrack-2.6.2.jar，放到bin目录
2、编辑bin目录下面有2个文件 ： 一个是idea64.exe.vmoptions，还有一个是idea.exe.vmoptions，加入-javaagent:./JetbrainsCrack-2.6.2.jar
3、启动，active code中填：
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":,
"autoProlongated":false}
2020.4.3更新：
1、如果上述激活码无效，可以尝试：http://woele
2、已经到JetbrainsCrack-4.2-release-enc.jar了
3、记得修改hosts文件：0.0.0.0 account.jetbrains.com、0.0.0.0 www.jetbrains.com、0.0.0.0 www-weighted.jetbrains.com