Activiti获取流程中的审批意见

执行流程的过程中所有的变量信息都保存在ACT_HI_VARINST中。对应的java对象是HistoricVariableUpdate

   /**
	 * 
	 *@User   :Test
	 *@date   :2014-6-26 下午02:19:22
	 *@return :String
	 *@userFor :获得流程的变量信息  taskService.complete(taskid,variables);
	 */
  private String getWorkflowVariables(String processInstanceId,
			String activityInstanceId) {
		String result = "";
		List historicDetailList = historyService.createHistoricDetailQuery()
				.processInstanceId(processInstanceId).activityInstanceId(
						activityInstanceId).list();
		if (historicDetailList != null && historicDetailList.size() > 0) {
			//执行任务时提的意见
			String comment = "";
			//下一个审批人
			String piStatus = "";
			for (Iterator iterator = historicDetailList.iterator(); iterator
					.hasNext();) {
				HistoricDetail historicDetail = (HistoricDetail) iterator
						.next();
				HistoricVariableUpdate variable = (HistoricVariableUpdate) historicDetail;
				if ("workflowComment".equals(variable
						.getVariableName()))
					comment = String.valueOf(variable.getValue());
				else if ("flowName".equals(variable
						.getVariableName()))
					piStatus = variable.getValue() != null ? String
							.valueOf(variable.getValue()) : "";
			}

			if (!"".equals(piStatus)
					&& !"".equals(comment)
					&& !"撤回"
							.equals(piStatus))
				result = (new StringBuilder(String.valueOf(piStatus))).append(":").append(comment).toString();
		}
		return result;
 }