在eclipse中安装statET时出现：An error occurred while collecting items to be installed，具体如下：An error occurred while collecting items to be installed
session context was:(profile=epp.package.committers, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to connect to repository http://download.walware.de/eclipse-4.5/mylyn/plugins/org.eclipse.mylyn.wikitext.textile.core_2.10.0.v20160630-1705.jar
Connection refused: connect，求大神帮忙解决，谢谢！