1.程序安裝包：
https://download.jetbrains.8686c.com/idea/ideaIU-2018.3.exe
3.雙擊程序安裝包把 IDEA 裝好，但是不要打開
4.打開IDEA目錄下的bin目錄，將破解補丁文件放到安裝目錄的bin目錄下，找到idea.exe.vmoptions(32位系統)或idea64.exe.vmoptions(64位系統)，用記事本或其它編輯器打開，然后分別修改 idea.exe.vmoptions 和 idea64.exe.vmoptions這兩個文件，在文件末尾添加如下的配置：-javaagent:D:/application/IntelliJ IDEA 2018.3/bin/JetbrainsIdesCrack-4.2-release-enc.jar。注意，安裝目錄換成自己的安裝目錄。
5.輸入激活碼
此時我們打開IDEA，在一些基礎的設置后，會彈出讓你輸入激活碼的窗口
這里我們選擇中間的Activation code，並在下面的輸入框中粘貼如下內容：
ThisCrackLicenseId-{
"licenseId":"ThisCrackLicenseId",//隨便填
"licenseeName":"idea",//你的名字
"assigneeName":"",//你的名字
"assigneeEmail":"idea@163.com",//你的郵箱
"licenseRestriction":"For This Crack, Only Test! Please support genuine!!!",//激活信息
"checkConcurrentUse":false,
"products":[//各個產品的代碼以及過期時間
{"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}
6. 最后點擊OK，此時我們就得到一個2100年到期的IDEA了，破解完成！
7.總結：輸入激活碼后如果出現 key is invalid 的情況是因為破解補丁的版本太低了，下載高版本的就行