JSP向数据库中插入记录并返回记录id

public long submit() {
		Connection con = Cconnection.getconnection();
		PreparedStatement ps = null;
		ResultSet rs = null;
		long id = 0;
		try {
			String sql = "instal into abc(a,b,c) value(?,?,?)";
			ps = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
			ps.setString(1, "内容");
			ps.setString(2, "内容");
			ps.setString(3, "内容");
			ps.executeUpdate();
			rs = ps.getGeneratedKeys();// 得到插入的记录的id
			while (rs.next()) {
				id = rs.getLong(1);
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				rs.close();
				ps.close();
				con.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		return id;
	}