场景
IDEA版本过低的话会导致某些IDEA插件没法安装，比如Lombok插件和EasyCode插件等。
实现
双击exe安装包
点击Next
选择安装路径，点击Next
设置桌面快捷方式，增加到右键菜单，添加文件关联和添加到环境变量，点击Next
默认并点击Install
等待安装完成
选择稍后重启，点击Finish
然后将PJ包jetbrains-agent.jar放在IDEA安装目录下的bin目录下
并在此目录下打开idea64.exe.vmoptions文件,在末尾中添加如下路径，对应刚才的jar包所在的路径
运行IDEA
启动后进行相关UI设置
点击跳过
进入到激活页面。
选择使用License server激活，输入以下地址
http://jetbrains-license-server
点击Activate。
然后新建一个Project，进入Help--About，如果提示没有激活
再点击Help-Register
然后先点击激活按钮左下角的 Remove License按钮，然后选择激活方式中的 Activation Code 方式激活，填入如下激活码并激活：
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激活成功后会有激活成功提示
安装包等资源下载
关注公众号：
霸道的程序猿
回复：
IDEA2019
来源：oschina
链接：https://my.oschina.net/u/4357584/blog/3345829