Jabba -- Java JDK 版本管理工具
1.安装
参照官网：https://github.com/shyiko/jabba
window 10：powershell下执行
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
Invoke-Expression (
Invoke-WebRequest https://github.com/shyiko/jabba/raw/master/install.ps1 -UseBasicParsing
).Content
问题1：
Invoke-WebRequest : 未能解析此远程名称: 'raw.githubusercontent.com'
所在位置 行:2 字符: 3
+ Invoke-WebRequest https://github.com/shyiko/jabba/raw/master/instal ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest]，WebExce
ption
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand
解决：
1）打开IPAddress.com网站，输入raw.githubusercontent.com，查询出结果，如下：
Hostname Summary
Domain githubusercontent.com
IP Address
199.232.68.133
Web Server Location United States
2）在C:/Windows/System32/drivers/etc/hosts中添加
199.232.68.133 raw.githubusercontent.com
问题2：
. : File C:\Users\sanpingx\.jabba\jabba.ps1 cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at
https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:79 char:3
+ . "$jabbaHome\jabba.ps1"
+ ~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : SecurityError: (:) [], PSSecurityException
+ FullyQualifiedErrorId : UnauthorizedAccess
解决：
输入Set-ExecutionPolicy -Scope CurrentUser，
等待提示信息ExecutionPolicy:，再输入RemoteSigned，
最后输入Y。
2.使用
常用命令可参照官网：https://github.com/shyiko/jabba
问题1：将系统中已安装的JDK链接到jabba中
jabba link system@1.8.171 C:\Program Files\Java\jdk1.8.0_171
C:\Program\bin\java.exe wasn't found. If you believe this is an error - please create a ticket at https://github.com/shyiko/jabba/issues (specify OS and command that was used)
解决：由于路径中有空格，将Program Files改为缩写Progra~1
jabba link system@1.8.171 C:\Progra~1\Java\jdk1.8.0_171
问题2：将系统中已安装的JDK链接到jabba中
jabba link system@1.8.171 C:\Progra~1\Java\jdk1.8.0_171
symlink C:\Progra~1\Java\jdk1.8.0_171 C:\Users\sanpingx\.jabba\jdk\system@1.8.171: A required privilege is not held by the client.
解决：权限不够，以管理员身份运行power shell
