1
我还是一个新手。但是,我在mt数据库中插入数据时遇到问题。我认为在我的脚本中发生了很多错误使用JCreator将Java连接到MS Access
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class Student extends JFrame
{
//Component's name
private JLabel lblName,lblAge,lblGrade;
private JTextField txtName, txtAge,txtGrade;
private JButton btnAdd;
String c;
String d;
String e;
public void Student()
{
Connection conn = null;
String url = "jdbc:mysql://localhost:3306/";
String dbName = "Information";
String driver = "com.mysql.jdbc.Driver";
String userName = "root";
String password = "abcd";
Container container = getContentPane();
container.setLayout(new FlowLayout());
lblName=new JLabel("Name: ");
container.add(lblName);
txtName=new JTextField(30);
container.add(txtName);
lblAge=new JLabel("Age: ");
container.add(lblAge);
txtAge=new JTextField(2);
container.add(txtAge);
lblGrade=new JLabel("Grade: ");
container.add(lblGrade);
txtGrade=new JTextField(1);
container.add(txtGrade);
btnAdd=new JButton("Add");
container.add(btnAdd);
btnAdd.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ev)
{
c=txtName.getText();
d=txtAge.getText();
e=txtGrade.getText();
try
{
Class.forName(driver).newInstance();
conn = DriverManager.getConnection(url + dbName, userName, password);
PreparedStatement statement = conn.prepareStatement("INSERT INTO Information ('StudentName', 'StudentAge','Grade') VALUES ('"+c+"', '"+d+"', '"+e+"'')");
statement.executeQuery();
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
});
setSize(300,300);
setVisible(true);
}
public static void main(String[]args)
{
Student application = new Student();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
所以,谁能帮我解决这里出了什么问题吗?请参阅下面的屏幕截图了解输出。
可以请你把你的错误,我无法看到图像 –