修改IntelliJ IDEA 缓存文件位置

　　（1）打开安装路径的属性文件
　　我的安装路径是：D:JetBrainsIntelliJ IDEA 15.0.4，打开路径下的bin文件夹，找到idea.properties文件。
　　（2）修改属性配置
　　用notepad++或记事本等打开idea.properties文件，找到配置信息中有${user.home}的字段，如idea.config.path，idea.system.path：

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE config folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.config.path=${user.home}/.IntelliJIdea/config

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE system folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
# idea.system.path=${user.home}/.IntelliJIdea/system

　　将${user.home}修改成你想存放的路径，注意去掉字段前面的井号”#”：

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE config folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.config.path=D:/JetBrains/.IntelliJIdea/config

#---------------------------------------------------------------------
# Uncomment this option if you want to customize path to IDE system folder. Make sure you're using forward slashes.
#---------------------------------------------------------------------
idea.system.path=D:/JetBrains/.IntelliJIdea/system

　　（３）查看路径
　　如果路径D:/JetBrains出现文件夹.IntelliJIdea，则说明修改成功。