Mybatisの動きsql(一括挿入)


1.必要な依存
        
        
            mysql
            mysql-connector-java
            5.1.48
            runtime
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.1.0
        
        
            com.alibaba
            druid
            1.1.21
        
        
2.Spring Bootプロファイル
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.url=jdbc:mysql://xxx.xxx.xx.xxx:4000/tpcc?useUnicode=true&characterEncoding=utf-8&useSSL=false
spring.datasource.username=xxx
spring.datasource.password=xxx
spring.datasource.driverClassName=com.mysql.jdbc.Driver
3.コード部分
@Mapper
@Repository
public interface MysqlMapper {

    /**
     *            
     *
     * @param competitionList   
     */
    @InsertProvider(type = BatchInsertCompetition.class, method = "batchInsertCompetition")
    void batchInsertCompetition(@Param("competition") List competitionList);

    class BatchInsertCompetition {
        public String batchInsertCompetition(Map> map) {
            List compList = map.get("competition");
            StringBuilder sql = new StringBuilder();
            sql.append("insert ignore into ").append(compList.get(0).getTableName()).append(" ");
            sql.append("(tenant_id,business_line_id,keyword_name,province_name,province_code,city_name,city_code," +
                    "device_name,first_raw_url,first_page_url,first_domain,first_advertiser_id,second_raw_url," +
                    "second_page_url,second_domain,second_advertiser_id,third_raw_url,third_page_url,third_domain," +
                    "third_advertiser_id,fetch_time,delete_flag) values");
            for (int i = 0; i < compList.size(); i++) {
                sql.append("(#{competition[+").append(i).append("].tenantId},")
                        .append("#{competition[+").append(i).append("].businessLineId},")
                        .append("#{competition[+").append(i).append("].keywordName},")
                        .append("#{competition[+").append(i).append("].provinceName},")
                        .append("#{competition[+").append(i).append("].provinceCode},")
                        .append("#{competition[+").append(i).append("].cityName},")
                        .append("#{competition[+").append(i).append("].cityCode},")
                        .append("#{competition[+").append(i).append("].deviceName},")
                        .append("#{competition[+").append(i).append("].firstRawUrl},")
                        .append("#{competition[+").append(i).append("].firstPageUrl},")
                        .append("#{competition[+").append(i).append("].firstDomain},")
                        .append("#{competition[+").append(i).append("].firstAdvertiserId},")
                        .append("#{competition[+").append(i).append("].secondRawUrl},")
                        .append("#{competition[+").append(i).append("].secondPageUrl},")
                        .append("#{competition[+").append(i).append("].secondDomain},")
                        .append("#{competition[+").append(i).append("].secondAdvertiserId},")
                        .append("#{competition[+").append(i).append("].thirdRawUrl},")
                        .append("#{competition[+").append(i).append("].thirdPageUrl},")
                        .append("#{competition[+").append(i).append("].thirdDomain},")
                        .append("#{competition[+").append(i).append("].thirdAdvertiserId},")
                        .append("#{competition[+").append(i).append("].fetchTime},")
                        .append("#{competition[+").append(i).append("].deleteFlag})");
                if (i < compList.size() - 1) {
                    sql.append(",");
                } else {
                    sql.append(";");
                }
            }
            System.out.println(String.format("【insert competition sql】 :: %s", sql.toString()));
            return sql.toString();
        }
    }
}
4.本質的には、寄せ集めに挿入された原生sql文:insert ignore into(a、b、c)values(1、2、3)、(4、5、6)である.