1.破解补丁下载：http://idea.lanyus.com/jar/JetbrainsCrack-2.7-release-str.jar,
2.然后把补丁放入bin目录。修改两个文件(idea.exe.vmoptions和idea64.exe.vmoptions),用记事本打开这两个文件，在末尾添加-javaagent:G:\Program Files\JetBrains\IntelliJ IDEA 2017.3\bin\JetbrainsCrack-2.7-release-str.jar(红色字体需自行修改至你的intellij idea安装目录的bin目录)
3.重新激活，选择activation code,重新输入激活码
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综上完成,参考blog https://blog.csdn.net/qq_27686779/article/details/78870816?from=groupmessage&isappinstalled=0