eclipse mars 安装groovy插件

ps:还是安装不了，提示springsource的groovy每个jar read time out.

于是下载了个离线包 解压后copy到eclipse

http://download.youkuaiyun.com/download/add166/9569795

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1、下载安装

You can download a pre-configured version of the Eclipse IDE with Groovy and Gradle support from the following website:Spring tools download side.

2、更新安装

Alternatively you can also install the Groovy tooling into an existing Eclipse installation. Open the Eclipse Update manager via theHelp →Install New Software... menu entry to install the Groovy Eclipse plug-in. Enter the following URL in this dialog:

http://dist.springsource.org/snapshot/GRECLIPSE/e4.5/ 

其他是使用其他版本,可以浏览这个链接，复制对应的更新地址。 Groovy/Grails Tool Suite™ Downloads 。

安装上述，失败，并提示错误，信息如下：

http://dist.springsource.org/snapshot/GRECLIPSE/e4.5/plugins/org.eclipse.jdt.core_3.11.0.xx-201608111527-e45.jar. Read timed out。

解决办法：

清空目录 {user.home}/.eclipse/org.eclipse.oomph.p2/cache to clean ，然后重新安装，应该可以成功。

groovy项目提示错误：Groovy compiler to set the Groovy compiler level for this project

需要安装Groovy compiler对应的版本，然后在groovy项目属性中进行设置，保持编译版本一致。