我们正在使用Windows 7 64位操作系统和JRE 1.7和1.8。在代理服务器后面运行的Java和eclipse。
我们正在使用Microsoft Forefront TMG客户端。
我们正在尝试连接maven / eclipse市场，但它没有检测到TMG服务器。
最多java 1.6在访问maven / eclipse市场时没有错误。在升级java之后我们面临着这个问题。
问题：当我使用Java 1.7时，我无法连接到Maven存储库（https://repo.maven.apache.org/maven2/...。）
当我使用Java 1.6时，我能够连接到maven存储库
我使用了Windows命令提示符。
得到以下消息
"[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:maven-clean-plugin:2.5: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artif
act descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.5
org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven
-clean-plugin:jar:2.5
at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:122)
at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:148)
at org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBuildPluginManager.java:81)
at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:138)
at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:121)
at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(DefaultPluginPrefixResolver.java:85)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix(MojoDescriptorCreator.java:260)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(MojoDescriptorCreator.java:220)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:103)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:83)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.jav