/**
 * 大批量插入,資料分頁處理
 *
 * @param tableName 臨時表名稱
 * @param mapHead   臨時表屬性 Map,key = 臨時表字段屬性, value = 具體值。此處 value 沒有使用
 * @param mapList   臨時表的大批量資料
 */
private void pageDate(String tableName, Map<String, Object> mapHead, List<HashMap<String, Object>> mapList) {

    //測試（大批量插入）：條數-耗時：6300條-2s,16800條-5s，24000條-7s 67300條-18s
    for (int i = 0, j = 0, amount = 3000; i < mapList.size(); i += amount) {
        j = i + amount;
        //amount可取值3000/5000/10000/。。。測看大批量效果。
        try {
            if (j < mapList.size()) {
                insertBatchList(tableName, mapHead, mapList.subList(i, mapList.size()));
            } else {
                insertBatchList(tableName, mapHead, mapList.subList(i, mapList.size()));
                break;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}
 

/**
 * 批量插入資料
 *
 * @param tableName 臨時表名稱
 * @param mapHead   臨時表屬性 Map,key = 臨時表字段屬性, value = 具體值。此處 value 沒有使用
 * @param list      臨時表分頁後的批量資料
 */
private void insertBatchList(String tableName, Map<String, Object> mapHead, List<HashMap<String, Object>> list) {
    HashMap<String, Object> map = new HashMap<>();
    map.put("tableName", tableName);
    map.put("mapHead", mapHead);
    map.put("list", list);
    reportAllSqlMapper.insertBatchTableListDynamic(map);
}
 

mybatis mapper 層介面

/**
 * 批量插入資料
 * @param map
 */
void insertBatchTableListDynamic(@Param("map")HashMap<String,Object> map);

mybatis xml

<insert id="insertBatchTableListDynamic" parameterType="java.util.HashMap">
    insert into
    ${map.tableName}
    (
    <foreach collection="map.mapHead" index="key" item="value"
             separator=",">
        `${key}`
    </foreach>
    )
    values
    <foreach collection="map.list" item="line" separator=",">
        (
        <foreach collection="line" index="key" item="value"
                 separator=",">
            #{value}
        </foreach>
        )
    </foreach>
</insert>