如何使用jsp在mysql中插入日期？

Question

this is my edited code...

         java.sql.Timestamp sqlNow = new java.sql.Timestamp(new java.util.Date().getTime());

                stmt = con.createStatement();
    //stmt.executeUpdate("INSERT INTO cregn values('"+appno+"','"+usname+"','"+upwd +"','"+fname+"','"+mname+"','"+lname+"','"+dob+"','"+gend+"','"+faname+"','"+saddr+"','"+caddr+"','"+staddr +"','"+pin+"','"+cno+"','"+email+"','"+occ+"','"+secques+"','"+answer+"','Processing','"+sqlNow+"')");
                pst = con.prepareStatement("INSERT INTO cregn (aplno, username, pwd, firstname,middlename,lastname, dob,gender, fathername, street,city,state, pincode, phone, email,occupation,secques,answer,dor)  VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)");

                pst.setInt(1, appno);
                pst.setString(2, usname);
                pst.setString(3, upwd);
                pst.setString(4, fname);
                pst.setString(5, mname);
                pst.setString(6, lname);
                pst.setString(7, dob);
                pst.setString(8, gend);
                pst.setString(9, faname);
                pst.setString(10, saddr);
                pst.setString(11, caddr);
                pst.setString(12, staddr);
                pst.setString(13, pin);
                pst.setString(14, cno);
                pst.setString(15, email);
                pst.setString(16, occ);
                // pst.setString(17,ph);
                pst.setString(17, secques);
                pst.setString(18, answer);

                pst.setTimestamp(19, sqlNow);

                pst.executeUpdate();

                out.println("Registration Successful for application " + appno);
            } catch (Exception ee) {
                out.println("Invalid Data! All fields are mandatory..." + ee.getMessage());
            }


%>

after executing this code error displayed "Invalid Data! All fields are mandatory..data truncation"

Answer 1

You are not executing the statement.

You need to call executeUpdate

Answer 2

You have to call execute or executeUpdate on pst in order to actually do the work. Eg, at the end:

pst.executeUpdate();

All that the code you've shown does is prepare the statement for execution, it doesn't execute it. This is one of the main differences between PreparedStatement and Statement . In Statement , you pass the SQL to execute directly into executeUpdate (as seen in your commented-out line using stmt ). With a PreparedStatement , you supply the SQL with ? as you've done, set those parameters, and then call executeUpdate (or execute ), which you haven't done.

Answer 3

在pst上没有executeUpdate() 。

Answer 4

use pst.executeUpdate(); to execute the query and make sure that in transaction use setAutoCommit(true) has to be called.