避免重复提交

ibzwf-core/src/main/java/cn/ibizlab/core/extensions/service/WFCoreService.java

@@ -142,7 +142,11 @@ public class WFCoreService
 				throw new BadRequestAlertException("未找到对应的工作流配置",entity,businessKey);
 			processDefinitionKey=definitionKeys.get(0);
 		}
+
 		String processInstanceBusinessKey=system+":"+entity+":k-"+businessKey;
+
+		if(runtimeService.createProcessInstanceQuery().processDefinitionKey(processDefinitionKey).processInstanceBusinessKey(processInstanceBusinessKey).count()>0)
+			throw new BadRequestAlertException("已经启动过流程，不能重复提交",entity,businessKey);
 		Map<String, Object> variables = new LinkedHashMap<>();
 		variables.put("businessKey",businessKey);
 		variables.put("activedata",instance.get("activedata"));