将MSAccess数据库与Java Web应用程序连接

Question

I am trying to connect Msaccess database with my java webapplication using the following code:

    import java.sql.*;
 public class connection {
 public static void main(String[] args) {
try {
// Load MS accces driver class
 Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
  System.out.println("loaded");

  String url =  "jdbc:odbc:OnboardingTT";

   System.out.println("assigned");
  // specify url, username, pasword - make sure these are valid 
   Connection conn = DriverManager.getConnection(url,"","");

   System.out.println("Connection Succesfull");

  } catch (Exception e) {
 System.err.println("Got an exception! ");
  System.err.println(e.getMessage());


    }}}

But connection is not established. and the error is

    loaded 
    assigned
  Got an exception!
    null   
    java.lang.NullPointerException      
    at sun.jdbc.odbc.JdbcOdbcDriver.initialize(Unknown Source) at
    sun.jdbc.odbc.JdbcOdbcDriver.connect(Unknown Source) at  
    java.sql.DriverManager.getConnection(Unknown Source) at 
    java.sql.DriverManager.getConnection(Unknown Source) at   
    connect.connection.main(connection.java:18)

I also tried with

 String url = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb,*.accdb)};DBQ="+ "C:\\OnboardingTT.mdb";

Is this code correct or i have to do any changes in this please answer my question

Answer 1

Looks like something went wrong with the DB connection, maybe the DB is not online, maybe the user or the password are incorrect...

Please provide more info to help us to help you.

;-)