安装Eclipse activity插件 报异常 Cannot complete the install because one or more required items could not be

下载插件：Activiti Designer 5.17

2)安装过程中错误处理

a、错误：

Cannot complete the install because one or more required items could not be found.

  Software being installed: Activiti Eclipse BPMN 2.0 Designer 5.14.1 (org.activiti.designer.feature.feature.group 5.14.1)

  Missing requirement: Activiti Eclipse BPMN 2.0 Designer 5.14.1 (org.activiti.designer.feature.feature.group 5.14.1) requires 'org.eclipse.emf.transaction 1.4.0' but it could not be found

b、解决办法

但具体到本机环境有所不同，具体如下，以下是本机解决方案，如下：

org.eclipse.emf.validation.ui_1.7.0.201403111711.jar、

org.eclipse.emf.workspace_1.5.1.201306111400.jar、

org.eclipse.emf.validation_1.8.0.201403111711.jar

org.eclipse.emf.transaction_1.4.0.201306111400.jar；

四个插件下载地址：http://download.csdn.net/detail/yixiaoping/8520517

把这四个文件拷贝到自己的eclipse的plugin文件夹下面，重启eclipse再次安装activiti插件就可以了。