使用Java插入mySql

Question

I am trying to insert some stuff into a sql database but my code isn't working. I'm kinda new to this, but after trying a few different things I am still stuck. Any ideas as to how I could get my code to work? I'm not actually getting any errors, but the information is never entered into the database. Thanks in advance.

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class sqlIns
{
    public static void main (String []args)
    {
        String host = "jdbc:mysql://localhost:3306/tempdatat";
        String user = "root";
        String pass = "Nathan1";

        try
        {
            Class.forName("com.mysql.jdbc.Driver");
            Connection con = DriverManager.getConnection(host,user, pass);
            PreparedStatement statement = con.prepareStatement("Insert Into tempdata(id, timedata, tempdata) VALUES (?, ?, ?)");
            statement.setInt(1, 1);
            statement.setInt(2, 30);
            statement.setDouble(3, 78.30);
            statement.execute();
            statement.close();
            con.close();
        }
        catch(Exception e)
        {
             System.out.println(e.getMessage());
        }
        finally
        {
                 System.out.println("Done!");
        }

     }
}

Answer 1

Your DB table names are different in your host variable & sql query . Make sure of correct table name of database at both places. And, Use all lowercase letters for sql query.

Try it:

insert into tempdata(id, timedata, tempdata) values (?, ?, ?)

Instead of :

Insert Into tempdata(id, timedata, tempdata) VALUES (?, ?, ?)

Answer 2

Your code is actually pretty good, and you almost got it right.

Your only mistake is that for INSERT you need to use:

statement.executeUpdate();