When MySQL inserts Chinese into the database, there is a diamond question mark garbled code

1、 The phenomenon and background of the problem
Appears when the database is inserted �� The statement

2、 Problem related code , Do not paste screenshots

  for (DetectionFlowBinding flowBinding : bindingList) {            task = new PcrTask();            BeanUtils.copyProperties(operatorData, task);            task.setDetectionItemName(new String(operatorData.getDetectionItemName().getBytes(StandardCharsets.UTF_8)));            task.setFlowId(flowBinding.getFlowId());            task.setFlowName(detectionFlow.getFlowName());            task.setFlowNodeId(flowBinding.getNodeId());            task.setFlowNodeName(new String(flowBinding.getNodeName().getBytes(StandardCharsets.UTF_8)));            task.setContainsParam(flowBinding.getContainsParam());            task.setSampleId(operatorData.getId());// Sample the primary key of this table id            task.setCreateBy(param.getCreateBy());            task.setCreateTime(new Date());            operatorTaskList.add(task);        }

3、 adopt mybatis plus Automatically generate code and batch insert

4、DetectionItemName FlowName These two fields occasionally appear in Chinese +� The combination of garbled

5、 It is normal to read Chinese in the log before inserting , Look at Alibaba cloud sql Auditing is also normal , Saving to the database is garbled

notes ：mysql8.0 edition

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Take the answer ：

Look at you mysql Is the character set of the database utf8

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