Question

我正在使用jsp文件和mysql。我在将日期和时间插入数据库时遇到问题。我可以插入其他信息，但只能插入日期和时间。我也需要将日期和时间插入数据库。我该如何实现？任何帮助表示赞赏。

Jsp代码

 <% 
            String userId       = request.getParameter("UserID");
            String arm          = request.getParameter("Arm");
            String[] armNumber  = request.getParameterValues("ArmNumber");
            String remark       = request.getParameter("Remark");
            String Timestamp    = request.getParameter("Time");


            out.println("<tr>");
            out.println("<td style='width: 10%'>");
            out.println(Timestamp);
            out.println("</td>");
            out.println("</tr>");


            int count           =0;
            Connection conn     = null;
            try {
                Class.forName("com.mysql.jdbc.Driver");
                String connURL = "jdbc:mysql://localhost/Dodo?user=Dodo&password=0000";
                conn = DriverManager.getConnection(connURL);

                if (armNumber != null){

                for(int i=0; i<armNumber.length; i++){

                        String sql="Insert into assign(UserID, Arm, ArmNumber, Remark, Time) Values(?,?,?,?,now())";
                        PreparedStatement pstmt=conn.prepareStatement(sql);

                        pstmt.setString (1,userId);
                        pstmt.setString (2,arm);
                        pstmt.setString (3,(armNumber[i]));
                        pstmt.setString (4,remark);

                    int rec=pstmt.executeUpdate();

                    if (rec==1)
                        count++;
                    }
                }
    %>


            <form action="assign.jsp" method="post">
                <label><%=count%> assigned!!</label>
                <td style width="50%">
                <p><input type="submit" value="Return" name="ReturnBtn" /></p>
            </form>


    <%
            conn.close();
            }
            catch(Exception e){
                e.printStackTrace();
            }
            finally{

            }
    %>

Answer 1

First write sql statement like

String sql="Insert into assign(UserID, Arm, ArmNumber, Remark, Time) Values(?,?,?,?,?)";

Then add some extra statement under pstmt.setString (4,remark);

DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
pstmt.setDate(5,dateFormat.format(date));

Answer 2

now()包含在sql中的String中，我假设您正在寻找一种名为now()的方法，该方法返回当前时间和日期，但是因为String内没有调用该方法。您需要执行以下操作：

String sql="Insert into assign(UserID, Arm, ArmNumber, Remark, Time) Values(?,?,?,?,?)";
....
pstmt.setString(1,userId);
pstmt.setString(2,arm);
pstmt.setString(3,(armNumber[i]));
pstmt.setString(4,remark);
pstmt.setTimestamp(5, new Date());//this is java.util.Date

DateTime没有使用jsp插入数据库

2 个答案: