Salesforce 代碼實現提交審批

Approval.ProcessSubmitRequest req1 = new Approval.ProcessSubmitRequest();
req1.setComments('Submitting request for approval automatically using Trigger');
req1.setObjectId(opp.id);
req1.setNextApproverIds(new Id[] {UserInfo.getUserId()});
Approval.ProcessResult result = Approval.process(req1);  
Approval.ProcessWorkitemRequest req = new Approval.ProcessWorkitemRequest();    
List<Id> newWorkItemIds = result.getNewWorkitemIds();
req.setComments('Approving request using Trigger');
req.setAction('Approve');
req.setNextApproverIds(new Id[] {UserInfo.getUserId()});
req.setWorkitemId(newWorkItemIds.get(0));
Approval.ProcessResult result1 =  Approval.process(req);