实现步骤：1）双击运行安装!(https://oscimg.oschina.net/oscnet/ee8f4a85494e2d9ad80df0be3b4238a54d6.png)2）添加scala安装目录的bin目录路径到系统环境变量中!(https://oscimg.oschina.net/oscnet/bb36d0842fbebe