大家在安装 *Name:*Activiti BPMN 2.0 designer *Location:*http://activiti.org/designer/update/ 总是出现以下的错误 An error occurred while collecting items to be installed 原因是这个网址已经不存在,最可恶是官网的说明文档也没有提供新的办法。 只好使用离线安装。 附带三个jar包:org.eclipse.emf.transaction.jar,org.eclipse.emf.validation.jar,org.eclipse.emf.workspace.jar。解压后,将jars文件夹里的3个jar包复制到eclipse安装目录的plugins文件夹下,然后 activiti-designer-5.14.1.zip 用离线安装的方法操作即可。如果报错(eclipse安装activiti报错,缺少jar包。具体报错如下: Cannot complete the install because one or more required items could not be found. Software being installed: Activiti Eclipse BPMN 2.0 Designer 5.18.0.201508100929 (org.activiti.designer.feature.feature.group 5.14.0.201508100929) Missing requirement: Activiti Eclipse BPMN 2.0 Designer 5.18.0.201508100929 (org.activiti.designer.feature.feature.group 5.14.0.201508100929) requires 'org.eclipse.emf 2.6.0' but it could not be found),解决方法:将“离线解决方案”文件夹中的org.eclipse.emf 2.6.0的jar,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。