驳回，结束流程

src/main/java/com/example/demo/controller/ACBackController.java

@@ -6,6 +6,7 @@ import io.swagger.annotations.ApiOperation;
 import org.activiti.api.process.runtime.ProcessRuntime;
 import org.activiti.api.task.runtime.TaskRuntime;
 import org.activiti.bpmn.model.BpmnModel;
+import org.activiti.bpmn.model.EndEvent;
 import org.activiti.bpmn.model.FlowNode;
 import org.activiti.bpmn.model.SequenceFlow;
 import org.activiti.engine.*;
@@ -169,4 +170,41 @@ public class ACBackController {
             e.printStackTrace();
         }
     }
+
+    @ApiOperation(value = "驳回任务")
+    @GetMapping("stop")
+    public void stop(String taskId) {
+        try {
+            Task task = taskService.createTaskQuery().taskId(taskId).singleResult();
+            String processDefinitionId = task.getProcessDefinitionId();
+            BpmnModel bpmnModel = repositoryService.getBpmnModel(processDefinitionId);
+
+            // 得到结束节点的信息
+            FlowNode stopFlowNode = bpmnModel.getMainProcess().findFlowElementsOfType(EndEvent.class).get(0);
+            // 取得当前节点的信息
+//            Execution execution = runtimeService.createExecutionQuery().executionId(task.getExecutionId()).singleResult();
+//            String curActivityId = execution.getActivityId();
+            FlowNode curFlowNode = (FlowNode) bpmnModel.getMainProcess().getFlowElement(task.getTaskDefinitionKey());
+            //记录当前节点的原活动方向
+            List<SequenceFlow> outgoingFlows = new ArrayList<>();
+            outgoingFlows.addAll(curFlowNode.getOutgoingFlows());
+            //清理活动方向
+            curFlowNode.getOutgoingFlows().clear();
+            //建立新方向
+            List<SequenceFlow> newSequenceFlowList = new ArrayList<>();
+            SequenceFlow newSequenceFlow = new SequenceFlow();
+            newSequenceFlow.setId("newSequenceFlowId");
+            newSequenceFlow.setSourceFlowElement(curFlowNode);
+            newSequenceFlow.setTargetFlowElement(stopFlowNode);
+            newSequenceFlowList.add(newSequenceFlow);
+            curFlowNode.setOutgoingFlows(newSequenceFlowList);
+            // 完成任务
+            taskService.complete(taskId);
+            //恢复原方向
+            curFlowNode.setOutgoingFlows(outgoingFlows);
+            System.out.println("驳回停止成功");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
 }