1. 程式人生 > 程式設計 >Mybatis批量插入資料返回主鍵的實現

Mybatis批量插入資料返回主鍵的實現

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","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","引數為空。");
  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());
        //請求介面
 resultMap=registerService.test(list);
 return resultMap;
 }

介面:

public Map<String,Object> test(List<Map<String,Object>> data);

實現類:

    @Override
 public Map<String,Object>> data) {
 Map<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

請求引數:

{
  "data": [
    {"studentName": "張三","classNo": "一班"},"classNo": "二班"},"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,#{item.classNo}
  )
 </foreach>
 </insert>

則響應效果(key為主鍵)如下:

{
  "data": [
    {"studentName": "張三","key": 111},"key": 112},"key": 113}
  ]
}

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支援我們。