java - 无法将日期添加到 SQL 数据库

Question

我要将日期添加到数据库中。数据库字段的类型为 DATE，我传入一个包含日期的字符串。这是sql:

INSERT INTO timetableslot (TO_DATE('?', 'MM/DD/YYYY'), time, classID, cost)
VALUES ('12/23/2016','12:00',3,12)

我收到以下错误:

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '('?', 'MM/DD/YYYY'), time, classID, cost)VALUES ('12/23/2016','12:00',3,12)' at line 1

public boolean saveToDatabase() {

    boolean saved = false;
    Connection c = DBHelperClass.getConnection();
    String template = "INSERT INTO timetableslot (TO_DATE('?', 'MM/DD/YYYY'), time, classID, cost)"
            + "VALUES (?,?,?,?)";
    if (c != null) {
        try {
            PreparedStatement inserter = c.prepareStatement(template);
            inserter.setString(1, this.getDate());
            inserter.setString(2, this.getTime());
            inserter.setInt(3, this.getClassID());
            inserter.setInt(4, this.getCost());

            System.out.println(inserter);
            inserter.executeUpdate();
            saved = true;
        } catch (SQLException ex) {
            Logger.getLogger(User.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    return saved;
}

Answer 1

使用以下内容作为您准备好的声明:

String template = "INSERT INTO timetableslot (<COLUMN-NAME>, time, classID, cost) VALUES (STR_TO_DATE(?, '%m/%d/%Y'),?,?,?)";

TO_DATE 是一个 Oracle 函数。 MySQL 使用STR_TO_DATE。