java 批量插入 Oracle

sql = "INSERT INTO LOG_FILENAME(ID,FILENAME,CREATETIME) VALUES(2,?,sysdate)";

public void batchInsertFileNames(File[] files) throws SQLException {
        Connection conn = null;
        PreparedStatement pstmt = null;
        try {
            conn = dataSource.getConnection();
            pstmt = (PreparedStatement) conn.prepareStatement(sql);
            Date date = new Date();
            for (int i = 0; i < files.length; i++) {
                setParams(pstmt, files[i].getName(), date);
            }
//下句执行后开始批量插入数据
            pstmt.executeBatch();
        } finally {
            DbUtils.close(pstmt);
        }
}

    private void setParams(PreparedStatement pstmt, String fileName, Date date)
            throws SQLException {
        pstmt.setString(1, fileName);
                  //addBatch();执行后暂时记录此条插入
        pstmt.addBatch();
    }