我在本地经过身份验证的代理后面，所以我在 Window>Preferences>General>Network Connections 中手动输入了我的代理设置。
在此之后我遇到了同样的问题：如何配置代理设置以便 Eclipse 可以下载新插件？
所以我使用了上面链接中关于清除 SOCKS 代理的建议，错误就消失了。但是现在我遇到了一个新错误：
eclipse.buildId=I20120608-1400
java.version=1.7.0_05
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product
Error
Sun Nov 18 14:13:14 IST 2012
MarketplaceDiscoveryStrategy failed with an error
org.eclipse.core.runtime.CoreException: Cannot complete request to http://marketplace.eclipse.org/api/p?product=org.eclipse.epp.package.java.product&os=win32&runtime.version=3.8.0.v20120521-2346&client=org.eclipse.epp.mpc.core&java.version=1.7.0_05&product.version=1.5.0.20120131-1544&ws=win32&nl=en_US: http://marketplace.eclipse.org/api/p?product=org.eclipse.epp.package.java.product&os=win32&runtime.version=3.8.0.v20120521-2346&client=org.eclipse.epp.mpc.core&java.version=1.7.0_05&product.version=1.5.0.20120131-1544&ws=win32&nl=en_US
at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:165)
at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:80)
at org.eclipse.epp.internal.mpc.core.service.DefaultMarketplaceService.listMarkets(DefaultMarketplaceService.java:128)
at org.eclipse.epp.internal.mpc.core.service.CachingMarketplaceService.listMarkets(CachingMarketplaceService.java:55)
at org.eclipse.epp.internal.mpc.ui.catalog.MarketplaceDiscoveryStrategy.findMarketplaceCategory(MarketplaceDiscoveryStrategy.java:451)
at org.eclipse.epp.internal.mpc.ui.catalog.MarketplaceDiscoveryStrategy.performDiscovery(MarketplaceDiscoveryStrategy.java:136)
at org.eclipse.equinox.internal.p2.discovery.Catalog.performDiscovery(Catalog.java:85)
at org.eclipse.epp.internal.mpc.ui.catalog.MarketplaceCatalog.performDiscovery(MarketplaceCatalog.java:255)
at org.eclipse.equinox.internal.p2.ui.discovery.wizards.CatalogViewer$6.run(CatalogViewer.java:569)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: java.io.FileNotFoundException: http://marketplace.eclipse.org/api/p?product=org.eclipse.epp.package.java.product&os=win32&runtime.version=3.8.0.v20120521-2346&client=org.eclipse.epp.mpc.core&java.version=1.7.0_05&product.version=1.5.0.20120131-1544&ws=win32&nl=en_US
at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryStatusHelper.checkFileNotFound(RepositoryStatusHelper.java:297)
at org.eclipse.equinox.internal.p2.transport.ecf.FileReader.checkException(FileReader.java:474)
at org.eclipse.equinox.internal.p2.transport.ecf.FileReader.sendRetrieveRequest(FileReader.java:431)
at org.eclipse.equinox.internal.p2.transport.ecf.FileReader.read(FileReader.java:273)
at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.stream(RepositoryTransport.java:172)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.eclipse.epp.internal.mpc.core.util.AbstractP2TransportFactory.invokeStream(AbstractP2TransportFactory.java:35)
at org.eclipse.epp.internal.mpc.core.util.TransportFactory$1.stream(TransportFactory.java:69)
at org.eclipse.epp.internal.mpc.core.service.RemoteMarketplaceService.processRequest(RemoteMarketplaceService.java:141)
... 9 more
这就是我尝试运行 Marketplace 时得到的结果。我用谷歌搜索了很多，但我不知道如何解决它。
有什么帮助吗？