这个Exception意味着什么？java.sql.SQLException：一般错误，在Java中使用Access DB？

Question

I'm trying to insert data into the Access DataBase stored on my computer, but when i run this following code an Exception appears

This is the exception:

Dec 14, 2011 7:22:21 PM Ass3_lab.afterLogin$8 actionPerformed SEVERE: null java.sql.SQLException: General error at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6986) at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7114) at sun.jdbc.odbc.JdbcOdbc.SQLExecDirect(JdbcOdbc.java:3110) at sun.jdbc.odbc.JdbcOdbcStatement.execute(JdbcOdbcStatement.java:338) at sun.jdbc.odbc.JdbcOdbcStatement.executeUpdate(JdbcOdbcStatement.java:288)

I wrote this method to make the insertion:

public void saveDataInDB(int std_id,int course_id,String semester_no) throws SQLException {  
    Connection conn=null;
    PreparedStatement pstmt=null;

    String insertSQL="insert into Registered_course (std_id,course_id,semester_number) values(? , ?,?)";
    try{
        conn=con.getConnection();
        pstmt=conn.prepareStatement(insertSQL);

        pstmt.setInt(1,std_id);
        pstmt.setInt(2,course_id);
        pstmt.setString(3,semester_no);
        pstmt.executeUpdate();

        pstmt.close();
        conn.close();
    }  // end of try
    finally {
        if(conn != null){
            conn.close();
        }
        if (pstmt != null) {
            try {
                pstmt.close();
            } catch (Exception ignore) {
            }
        }
    }
}

And i called the method like this inside an action Listener:

save.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e){
        try {
            Login l = new Login();  

            for(int t=0;t<=numberOfRowsInTableOne;t++){
                i.saveDataInDB(l.idFromDB,course_id[t],semester_no);
            }
        } catch (SQLException ex) {
            Logger.getLogger(afterLogin.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
});

Could someone help me solving this problem please?

Answer 1

GeneralError is quite misleading. There are various reasons why it can happen:

1. Incorrect username, password.
2. Difference in bitness of Java and ODBC drivers (check if both java and your odbc drivers are either 32 or 64)
3. Very annoying but recreating DSN works (no idea why but it sometimes it does).