spring JdbcTemplate批量插入以及单个插入时获取id

1. 批量更新插入

jdbcTemplate.batchUpdate(String sql, List<Object[]> batchArgs)

Object[]数组的长度为每条记录的参数个数(也就是sql语句中"?"的个数)

List: 总共插入多少条记录。

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/**  * 批量插入订单详情  *  */ public void addBatch(List<OrderDetail> orderDetails) {     List<Object[]> params = new ArrayList<>();     for(OrderDetail orderDetail : orderDetails) {         params.add(new Object[]{orderDetail.getProductName(), orderDetail.getProductPrice(),                 orderDetail.getProductCount(), orderDetail.getParentid()});     }     final String sql = "insert into order_detail(pro_name,pro_price,pro_count,parent_id) values(?,?,?,?)";     jdbcTemplate.batchUpdate(sql, params);       }

 

2. 单条记录插入获取主键id

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/**  *  插入并获取主键  */ public int addAndGetId(Order order) {     final String sql = "insert into orders(name, address,createtime,totalprice,status) values(?,?,?,?,?)";     KeyHolder keyHolder = new GeneratedKeyHolder();     jdbcTemplate.update(new PreparedStatementCreator() {         @Override         public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {             PreparedStatement ps  = connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);             ps.setObject(1, order.getName());             ps.setObject(2, order.getAddress());             ps.setObject(3, order.getCreateTime());             ps.setObject(4, order.getTotalPrice());             ps.setObject(5, order.getStatus());             return ps;         }     }, keyHolder);     return keyHolder.getKey().intValue(); }