Cannot complete request to Marketplace不能打开eclipse marketplace

当打开eclipse marketplace的时候时候，发现有如下错误:

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Message:

Cannot install remote marketplace locations: Connection failedThis is most often caused by a problem with your internet connection. Please check your internet connection and retry.

Exception Stack Trace:

org.eclipse.core.runtime.CoreException: Unable to read repository at http://marketplace.eclipse.org/catalogs/api/p. at org.eclipse.equinox.internal.p2.transport.ecf.RepositoryTransport.stream(RepositoryTransport.java:181) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMet