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今天就跟大家聊聊有關Mybatis批量插入數據返回主鍵的實現是怎樣的,可能很多人都不太了解,為了讓大家更加了解,小編給大家總結了以下內容,希望大家根據這篇文章可以有所收獲。
響應效果(id為主鍵):
{ "data": [ {"studentName": "張三","classNo": "一班","id": 111}, {"studentName": "李四","classNo": "二班","id": 112}, {"studentName": "王五","classNo": "一班","id": 113} ]}
控制層:
@PostMapping("/test") @ResponseBody public Map<String, Object> test(@RequestBody String data) { Map<String, Object> resultMap = new HashMap<String, Object>(); //非空校驗 if (!checkParams.checkString(data)) { resultMap.put("code", "1"); resultMap.put("msg", "參數為空。"); return resultMap; } //json轉List<Map<String, Object>> JSONObject json= new JSONObject(data); String dataString = json.get("data").toString(); com.google.gson.Gson gson = new Gson(); List<Map<String, Object>> list = gson.fromJson(dataString, new com.google.common.reflect.TypeToken<List<Map<String, Object>>>() { }.getType()); //請求接口 resultMap=registerService.test(list); return resultMap; }
接口:
public Map<String, Object> test(List<Map<String,Object>> data);
實現類:
@Override public Map<String, Object> test(List<Map<String,Object>> data) { Map<String, Object> resultMap = new HashMap<String, Object>(); registerMapper.test( data); resultMap.put("data",data); return resultMap; }
持久層:
public void test(List<Map<String,Object>> list);
statement:
<!-- =========================批量插入返回主鍵示例======================== --> <insert id="test" parameterType="list" useGeneratedKeys="true" keyProperty="id" > INSERT INTO student_info(student_name,class_no)VALUES <foreach collection="list" item="item" separator=","> ( #{item.studentName}, #{item.classNo} ) </foreach> </insert>
請求方式:
http://localhost/xxx/test
請求參數:
{ "data": [ {"studentName": "張三","classNo": "一班"}, {"studentName": "李四","classNo": "二班"}, {"studentName": "王五","classNo": "一班"} ]}
注意事項:
statement中keyProperty的賦值是可以自定義的,如果將keyProperty的值改為key,即改成如下:
<!-- =========================批量插入返回主鍵示例======================== --> <insert id="test" parameterType="list" useGeneratedKeys="true" keyProperty="key" > INSERT INTO student_info(student_name,class_no)VALUES <foreach collection="list" item="item" separator=","> ( #{item.studentName}, #{item.classNo} ) </foreach> </insert>
則響應效果(key為主鍵)如下:
{ "data": [ {"studentName": "張三","classNo": "一班","key": 111}, {"studentName": "李四","classNo": "二班","key": 112}, {"studentName": "王五","classNo": "一班","key": 113} ]}
看完上述內容,你們對Mybatis批量插入數據返回主鍵的實現是怎樣的有進一步的了解嗎?如果還想了解更多知識或者相關內容,請關注億速云行業資訊頻道,感謝大家的支持。
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