解决方式:
1.卸载java 9:
sudo rm -rf /Library/Java/JavaVirtualMachines/jdk-9.jdk
sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -fr /Library/PreferencePanes/JavaControlPanel.prefPane
sudo rm -fr ~/Library/Application\ Support/Java
2.下载1.8 界面化安装,完成,成功
3. 进入/Library/Java/目录,删除JavaVirtualMachines即可