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：在https://mvnrepository.com/artifact/org.eclipse.birt.runtime/org.eclipse.emf/2.6.0.v20140901-1055下载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。