1，
下载 JetbrainsCrack-2.5.6.jar
我的是 h:IntelliJ IDEA 15.0.2in
2，
在安装的idea下面的bin目录下面有2个文件 一个是idea64.exe.vmoptions还有一个是idea.exe.vmoptions。
用记事本打开在最下面一行增加一行：
-javaagent:D:/Program Files (x86)/JetBrains/IntelliJIDEA 15.0.2/bin/JetbrainsCrack-2.5.6.jar
“h:/IntelliJ IDEA 15.0.2/bin/JetbrainsCrack-2..5.6.jar”是对应的JetbrainsCrack-2.5.6.jar的位置。
3.
重新启动软件在ActiviteCode里面输入如下注册码（licenseeName:用户名和assigneeEmail邮箱可以任意修改）
ThisCrackLicenseId-{
"licenseId":"ThisCrackLicenseId",
"licenseeName":"idea",
"assigneeName":"",
"assigneeEmail":"idea@163.com",
"licenseRestriction":"For This Crack, Only Test! Please supportgenuine!!!",
"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}
摘自：http://blog.csdn.net/qq_38013968/article/details/70660349