Question

我试图创建一个允许用户创建配置文件的应用程序，但是当我将其插入数据库时，出现了上面显示的错误。我看过类似的解决方案，但似乎没有任何效果。

目前的相关代码是

//Invokes myConnection class to link to DB
    Connection con = myConnection.getConnection();
    PreparedStatement ps;

    try 
    {
        //Adds the selected text to DB
        ps = con.prepareStatement("INSERT INTO `user`(`username`, `realname`, `password`, `email`, `gym`, `belt`, `dateofbirth`, `profilepic`, `biography`, `motto`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
        ps.setString(1, jTextFieldUsername.getText());
        ps.setString(2, jTextFieldName.getText());
        ps.setString(3, String.valueOf(jPasswordFieldPass.getPassword()));
        ps.setString(4, jTextFieldEmail.getText());
        ps.setString(5, jTextFieldGym.getText());
        ps.setString(6, jComboBoxBelt.toString());
        ps.setDate(7, convertUtilDateToSqlDate(jDateChooserDOB.getDate()));


        InputStream img = new FileInputStream(new File(imagePath));

        ps.setBlob(8, img);

        if(ps.executeUpdate() != 0)
        {
            JOptionPane.showMessageDialog(null, "Account Created!");
        }
        else
        {
            JOptionPane.showMessageDialog(null, "Oops! Something went wrong!");
        }

        ps.setString(9, jTextAreaBiography.getText());
        ps.setString(10, jTextAreaMotto.getText());
    } 
    catch (Exception ex) 
    {
        Logger.getLogger(RegisterPage.class.getName()).log(Level.SEVERE, null, ex);
    }

很抱歉，如果这样很简单，请先感谢您的帮助！

编辑：简单地回答，谢谢你在那里有个完整的脑袋。

Answer 1

您正在运行ps.executeUpdate()，而未设置参数9和10。

将这些行移动到if(ps.executeUpdate() != 0)之前：-

ps.setString(9, jTextAreaBiography.getText());
ps.setString(10, jTextAreaMotto.getText());

Answer 2

您的代码中的问题是

您必须设置参数的所有值，然后使用execute语句。

您的代码应该是这样的。

ps = con.prepareStatement("INSERT INTO `user`(`username`, `realname`, `password`, `email`, `gym`, `belt`, `dateofbirth`, `profilepic`, `biography`, `motto`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)");
ps.setString(1, jTextFieldUsername.getText());
ps.setString(2, jTextFieldName.getText());
ps.setString(3, String.valueOf(jPasswordFieldPass.getPassword()));
ps.setString(4, jTextFieldEmail.getText());
ps.setString(5, jTextFieldGym.getText());
ps.setString(6, jComboBoxBelt.toString());
ps.setDate(7, convertUtilDateToSqlDate(jDateChooserDOB.getDate()));


InputStream img = new FileInputStream(new File(imagePath));
ps.setBlob(8, img);
ps.setString(9, jTextAreaBiography.getText());
ps.setString(10, jTextAreaMotto.getText());

if(ps.executeUpdate() != 0)
{
     JOptionPane.showMessageDialog(null, "Account Created!");
}
 else
{
    JOptionPane.showMessageDialog(null, "Oops! Something went wrong!");
}

SQLException：未为参数9指定值

2 个答案: