不能打开Eclipse MarketPlace

1、打开Eclipse->help->eclipse marketplace，报以下异常

Cannot open Eclipse Marketplace 
Cannot install remote marketplace locations: Connection failed

This is most often caused by a problem with your internet connection.Please check your internet connection and retry. 
Unable to read repository athttp://marketplace.eclipse.org/catalogs/api/p. 
Connection reset 
Connection failed

This is most often caused by a problem with your internet connection.Please check your internet connection and retry. 
Connection reset

2、解决方案

(1) window->preferences->General->Network Connections，Active Provider处勾选Manual

(2)在eclipse.ini中增加    -Djava.net.preferIPv4Stack=true

最后

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