eclipse无法连接到makertplace

报错如下，以把eclipse文件夹和文件加入信任区还是连不上
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.
Cannot complete request to http://marketplace.eclipse.org/catalogs/api/p: Unable to connect to repository http://marketplace.eclipse.org/catalogs/api/p
Unable to connect to repository http://marketplace.eclipse.org/catalogs/api/p
Connection to http://marketplace.eclipse.org refused
Connection failed

This is most often caused by a problem with your internet connection. Please check your internet connection and retry.
Connection to http://marketplace.eclipse.org refused

1.在eclipse.ini文件末尾添加-Djava.net.preferIPv4Stack=true
2.需要手动添加Eclipse Marketplace Client。
help–install new software–add
添加name: Eclipse Marketplace Client (随意起名)
Location:http://download.eclipse.org/mpc/indigo/
添加完成后，work with 选择Eclipse Marketplace Client
就可以下载了。下载完成后，重启eclipse，help–Eclipse Marketplace Client

最后

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