安装spring tool suite总是报错
No repository found containing: osgi.bundle,org.eclipse.m2e.archetype.common,1.7.0.20160603-1931
参照博客：https://blog.csdn.net/goon_star/article/details/46885229
解决方法：help->install new software->点击work with后面的add，
name填m2e, location填:http://download.eclipse.org/technology/m2e/releases
然后OK，选中 Maven Integration for Eclipse一直next直到安装好