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Problems about Jason object in Java front end

2022-02-02 22:40:30 【CSDN Q & A】 

        List<SysDept> dept = deptService.selectCodeEmlNoList(param);        dept.forEach(sysDept -> {            if (sysDept!=null&&StringUtils.isNotBlank(sysDept.getOrgCusCode())){                JSONObject temp = new JSONObject();                temp.put("code",sysDept.getOrgCusCode());                temp.put("label",sysDept.getOrgCusCode());                temp.put("code1",sysDept.getOldOrgCusCode());                temp.put("label1",sysDept.getOldOrgCusCode());                objectList.add(temp);

You need to query two fields in the database Pass together to the front end Is there any way to put this together



Refer to the answer 1：

“” + ""



Refer to the answer 2：


Refer to the answer 3：

have access to concat Function together , The sample code is as follows ：

select concat(t.field1,t.field2) as f from table_name as t where 1 = 1;


Refer to the answer 4：

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