code: public static int[] executeBatch(Connection conn, Iterable<String> sqls) throws SQLException {
  		Statement statement = null;
  		try {
  			statement = conn.createStatement();
  			for (String sql : sqls) {
  				statement.addBatch(sql);
  			}
  			return statement.executeBatch();
  		} finally {
  			DbUtil.close(statement);
  		}
  	}
docs: 批量执行非查询语句<br>
  语句包括 插入、更新、删除<br>
  此方法不会关闭Connection
  
  @param conn 数据库连接对象
  @param sqls SQL列表
  @return 每个SQL执行影响的行数
  @throws SQLException SQL执行异常
  @since 4.5.6