JUnit插件安装失败

[刘浩]

win64 JUnit 插件一直安装失败提示信息如下：

An error occurred while collecting items to be installed
session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No artifact repository available.
noArtifactRepositoriesAvailable

查了好久，各种办法都试了，就是安不上，有没有大佬知道怎么解决的