每次我运行程序时，都会出现错误
给定的文件不存在：Registration.accdb
“ Registeration.accdb”文件位于我拥有代码的目录中，并且在下图中，我指定了数据库路径。
// Registeration of Student
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Registeration extends ControlDesk{
private JLabel title,rollno,firstname,lastname,gender,fathername,contact,alter_contact,course,section,address,session;
private JTextField rollnotxt,firstnametxt,lastnametxt,gendertxt,fathernametxt,contacttxt,alter_contacttxt,coursetxt,sectiontxt,addresstxt,sessiontxt;
private JButton register,controlDesk;
private JFrame registerFrame;
private JPanel registerPanel;
//Constructor
public Registeration(){
registerFrame = new JFrame("Library Management System - Registeration");
registerPanel = new JPanel();
registerFrame.add(registerPanel);
registerPanel.setBackground(Color.YELLOW);
registerPanel.setLayout(null);
registerFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
registerFrame.setSize(1024,720);
registerFrame.setVisible(true);
title = new JLabel("Registeration Form");
title.setFont(new Font("Arial",Font.PLAIN,25));
title.setBounds(300,10,300,30);
registerPanel.add(title);
//<--labels
rollno = new JLabel("Roll Number:");
rollno.setBounds(100,50,100,30);
rollno.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(rollno);
firstname = new JLabel("First Name:");
firstname.setBounds(100,100,100,30);
firstname.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(firstname);
lastname = new JLabel("Last Name:");
lastname.setBounds(100,150,100,30);
lastname.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(lastname);
fathername = new JLabel("Father's Name: ");
fathername.setBounds(100,200,100,30);
fathername.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(fathername);
contact = new JLabel("Contact:");
contact.setBounds(100,250,100,30);
contact.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(contact);
alter_contact = new JLabel("Alternative Contact:");
alter_contact.setBounds(100,300,100,30);
alter_contact.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(alter_contact);
course = new JLabel("Course");
course.setBounds(100,350,100,30);
course.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(course);
section = new JLabel("Section");
section.setBounds(100,400,100,30);
section.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(section);
address = new JLabel("Address:");
address.setBounds(100,450,100,30);
address.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(address);
session = new JLabel("Session");
session.setBounds(100,500,100,30);
session.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(session);
gender = new JLabel("Gender");
gender.setBounds(100,550,100,30);
gender.setFont(new Font("Arial",Font.PLAIN,15));
registerPanel.add(gender);
//--> end labels
//---. text field -->
rollnotxt = new JTextField("");
rollnotxt.setBounds(300, 50, 250, 30);
registerPanel.add(rollnotxt);
firstnametxt = new JTextField("");
firstnametxt.setBounds(300,100,250,30);
registerPanel.add(firstnametxt);
lastnametxt = new JTextField("");
lastnametxt.setBounds(300,150,250,30);
registerPanel.add(lastnametxt);
fathernametxt = new JTextField("");
fathernametxt.setBounds(300,200,250,30);
registerPanel.add(fathernametxt);
contacttxt = new JTextField("");
contacttxt.setBounds(300,250,250,30);
registerPanel.add(contacttxt);
alter_contacttxt = new JTextField("");
alter_contacttxt.setBounds(300,300,250,30);
registerPanel.add(alter_contacttxt);
coursetxt = new JTextField("");
coursetxt.setBounds(300,350,250,30);
registerPanel.add(coursetxt);
sectiontxt = new JTextField("");
sectiontxt.setBounds(300,400,250,30);
registerPanel.add(sectiontxt);
addresstxt = new JTextField("");
addresstxt.setBounds(300,450,250,30);
registerPanel.add(addresstxt);
sessiontxt = new JTextField("");
sessiontxt.setBounds(300,500,250,30);
registerPanel.add(sessiontxt);
gendertxt = new JTextField("");
gendertxt.setBounds(300,550,250,30);
registerPanel.add(gendertxt);
//-- start textField-->
register = new JButton("Register");
register.setBounds(300,600,150,50);
// event on register button
register.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
// store in database
try{
Connection con = DriverManager.getConnection("jdbc:ucanaccess://Registeration.accdb"); // connection
Statement st = con.createStatement();
String sql = "insert into Registeration values('"+ rollnotxt.getText() +"','"+firstnametxt.getText()+"','"+lastnametxt.getText()+"','"+
lastnametxt.getText() + "','" + fathernametxt.getText()+"','"+contacttxt.getText()+"','"+alter_contacttxt.getText()+"','"+coursetxt.getText()+"','"+
sectiontxt.getText()+"','"+addresstxt.getText()+"','"+sessiontxt.getText()+"','"+gendertxt.getText()+"')";
st.executeQuery(sql);
if(st.executeUpdate(sql) > 0){
JOptionPane.showMessageDialog(null,"Student Added");
}
con.close();
}
catch(SQLException se){
System.out.println("Error:- "+ se.getMessage());
}
}
});
registerPanel.add(register);
controlDesk = new JButton("Control Desk");
controlDesk.setBounds(500,600,150,50);
controlDesk.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
new ControlDesk();
}
});
registerPanel.add(controlDesk);
}// constructor end
}
最佳答案
mmmm ....请记住，您没有使用jdbc-odbc桥，因此配置Registeration.accdb ODBC源是无用的（以及代码位置）。
您只需将名称Registeration.accdb替换为完整路径（例如jdbc：ucanaccess：// c：//folder/Registeration.accdb）。而且您最好阅读ucanaccess网站；-)