在eclipse juno中安装gradle插件时出错

Question

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=). Unable to read repository at http://download.springsource.com/release/TOOLS/gradle/3.8.1.RELEASE/plugins/org.springsource.ide.eclipse.gradle.toolingapi_3.8.1.201607290732-RELEASE.jar. Connection reset

我在环境变量和java路径中也设置了gradle路径。当我在ecliple juno中安装gradle插件时，它在图像中给出了上述错误。 我怎么解决这个问题？