使用spring的JdbcTemplate操作批量插入数据

场景:从数据库中一张表批量查出数,每条记录封装到一个实例对象中,再将批量查出的数据插入到另一张数据库表
1.实现类与测试main方法

public class BatchOperationDao {
	
	private static String querySql = "SELECT CITY_NAME,LAND_AREA,POPULATION,GROSS,AREA_NUMBER,POSTAL_CODE,TELEPHONE_CODE,CAR_CODE,CITY_DESCRIBE FROM T_CITY WHERE  AREA_NUMBER= ? ";
	private static String insertBatchSql = "INSERT INTO T_CITY_INFO  (CITY_NAME,LAND_AREA,POPULATION,GROSS,AREA_NUMBER,POSTAL_CODE,TELEPHONE_CODE,CAR_CODE,CITY_DESCRIBE) VALUES (?,?,?,?,?,?,?,?,?) ";
	private static Logger logger = LoggerFactory.getLogger(BatchOperationDao.class);
	
	@SuppressWarnings("unchecked")
	public List<Object> queryForInsert() {
		List<Object> list = new ArrayList<Object>();
		Object[] Params = {"350200"};
		JdbcTemplate jdbc=	OperateJdbcUtils.getJdbcTemplate();
		list = jdbc.query(querySql, Params,new CityInfoMapper());
		return list;
	}
	
	private static final class CityInfoMapper implements RowMapper{

		@Override
		public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
			CityModel cityModel = new CityModel();
			cityModel.setCityName(rs.getString("CITY_NAME"));
			cityModel.setLandArea(rs.getDouble("LAND_AREA"));
			cityModel.setPopulation(rs.getLong("POPULATION"));
			cityModel.setGross(rs.getDouble("GROSS"));
			cityModel.setAreaNumber(rs.getString("AREA_NUMBER"));
			cityModel.setPostalCode(rs.getString("POSTAL_CODE"));
			cityModel.setTelephoneCode(rs.getString("TELEPHONE_CODE"));
			cityModel.setCarCode(rs.getString("CAR_CODE"));
			cityModel.setCityDescribe(rs.getString("CITY_DESCRIBE"));
			return cityModel;
		}
	}
	
	public int batchInsert(final List<Object> list) throws Exception {
		if (list.size() == 0) {
			return 0;
		}
		JdbcTemplate jdbc=	OperateJdbcUtils.getJdbcTemplate();
		String batchsql  =  getBatchInsertSql(insertBatchSql, list);
		int k= jdbc.update( batchsql , new PreparedStatementSetter(){
			@Override
			public void setValues(PreparedStatement ps) throws SQLException {
				 ObjectToPs(ps, list);
			}	
		});
		return k;
	}
	
	public void ObjectToPs(PreparedStatement ps, List<Object> list)
			throws SQLException {
		for (int i = 0; i < list.size(); ++i) {
			CityModel cityModel = (CityModel) list.get(i);
			ps.setString(9*i+1, cityModel.getCityName());
			ps.setDouble(9*i+2, cityModel.getLandArea() );
			ps.setLong(  9*i+3, cityModel.getPopulation() );
			ps.setDouble(9*i+4, cityModel.getGross() );
			ps.setString(9*i+5, cityModel.getAreaNumber() );
			ps.setString(9*i+6, cityModel.getPostalCode() );
			ps.setString(9*i+7, cityModel.getTelephoneCode() );
			ps.setString(9*i+8, cityModel.getCarCode() );
			ps.setString(9*i+9, cityModel.getCityDescribe() );
		}
		 
	}
	
	public static String getBatchInsertSql(String keyStr,List list) throws Exception{
		
		int index = keyStr.indexOf("VALUES");
		String loopStr = keyStr.substring(index+6);
		StringBuilder builder = new StringBuilder(keyStr.substring(0, index+6));
		for (int j = 0; j <list.size() ;++j) {
			builder.append(loopStr);
			if (j < list.size() -1) {
				builder.append(",");
			}
		}
		return builder.toString();
	}
	
	public static void main(String [] args) throws Exception{
		
		BatchOperationDao dao = new BatchOperationDao();
		logger.info("测试开始......");
		List<Object> list = dao.queryForInsert();
		dao.batchInsert(list);
		logger.info("测试结束......");
	}
}

2.实体类

public class CityModel implements Serializable {

	private static final long serialVersionUID = 4443714978780088961L;
	
	String cityName;
	double landArea;
	long population;	 
	double gross ;
	String areaNumber;
	String postalCode;
	String telephoneCode;
	String carCode;
	String cityDescribe;
	
	public String getCityName() {
		return cityName;
	}
	public void setCityName(String cityName) {
		this.cityName = cityName;
	}
	public double getLandArea() {
		return landArea;
	}
	public void setLandArea(double landArea) {
		this.landArea = landArea;
	}
	public long getPopulation() {
		return population;
	}
	public void setPopulation(long population) {
		this.population = population;
	}
	public double getGross() {
		return gross;
	}
	public void setGross(double gross) {
		this.gross = gross;
	}
	public String getAreaNumber() {
		return areaNumber;
	}
	public void setAreaNumber(String areaNumber) {
		this.areaNumber = areaNumber;
	}
	public String getPostalCode() {
		return postalCode;
	}
	public void setPostalCode(String postalCode) {
		this.postalCode = postalCode;
	}
	public String getTelephoneCode() {
		return telephoneCode;
	}
	public void setTelephoneCode(String telephoneCode) {
		this.telephoneCode = telephoneCode;
	}
	public String getCarCode() {
		return carCode;
	}
	public void setCarCode(String carCode) {
		this.carCode = carCode;
	}
	 
	
	public String getCityDescribe() {
		return cityDescribe;
	}
	public void setCityDescribe(String cityDescribe) {
		this.cityDescribe = cityDescribe;
	}
	@Override
	public String toString() {
		
		return "CityModel [cityName=" + cityName
				+",landArea=" + landArea
				+",population=" + population
				+",gross=" + gross
				+",areaNumber=" + areaNumber
				+",postalCode=" + postalCode
				+",telephoneCode=" + telephoneCode
				+",carCode=" + carCode
				+",cityDescribe=" + cityDescribe
				+"]";
	}
}

3.JdbcTemplate实例类

public class OperateJdbcUtils {
	
	/**数据库连接需要字符串*/
	public static final String username = "root";
	public static final String password = "123456";
	public static final String jdbcUrl = "jdbc:mysql://127.0.0.1:3306/zbzdb";
	public static final String driverName = "com.mysql.jdbc.Driver";
	public static JdbcTemplate jdbcTemplate = getJdbcTemplate();	
	/**获取一个JdbcTemplate实例对象*/
	public static JdbcTemplate getJdbcTemplate() {
		DruidDataSource dataSource = new DruidDataSource();
		dataSource.setPassword(password);
		dataSource.setUrl(jdbcUrl);
		dataSource.setUsername(username);
		dataSource.setDriverClassName(driverName);
		JdbcTemplate jdbcTemplate = new JdbcTemplate();
		jdbcTemplate.setDataSource(dataSource);
		return jdbcTemplate;
	}
}

4.数据库两张表

CREATE TABLE `t_city` (
  `CITY_NAME` VARCHAR(64) COLLATE utf8_bin NOT NULL COMMENT '城市名',
  `LAND_AREA` DOUBLE DEFAULT NULL COMMENT '城市面积',
  `POPULATION` BIGINT(16) DEFAULT NULL COMMENT '城市人口',
  `GROSS` DOUBLE DEFAULT NULL COMMENT '生产总值',
  `AREA_NUMBER` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '行政区划代码',
  `POSTAL_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '邮政编码',
  `TELEPHONE_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '电话区号',
  `CAR_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '车牌代码',
  `CITY_DESCRIBE` VARCHAR(512) COLLATE utf8_bin DEFAULT NULL COMMENT '城市描述'
) ENGINE=INNODB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='城市信息表'


CREATE TABLE `t_city_info` (
  `CITY_NAME` VARCHAR(64) COLLATE utf8_bin NOT NULL COMMENT '城市名',
  `LAND_AREA` DOUBLE DEFAULT NULL COMMENT '城市面积',
  `POPULATION` BIGINT(16) DEFAULT NULL COMMENT '城市人口',
  `GROSS` DOUBLE DEFAULT NULL COMMENT '生产总值',
  `AREA_NUMBER` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '行政区划代码',
  `POSTAL_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '邮政编码',
  `TELEPHONE_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '电话区号',
  `CAR_CODE` VARCHAR(64) COLLATE utf8_bin DEFAULT NULL COMMENT '车牌代码',
  `CITY_DESCRIBE` VARCHAR(512) COLLATE utf8_bin DEFAULT NULL COMMENT '城市描述'
) ENGINE=INNODB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='城市信息表'

以上,TKS.