无法访问ms-access数据库2010

Question

任何人都可以帮助我，为什么我无法访问ms-access数据库。 请在我的代码中查找错误。

protected String processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, ClassNotFoundException, SQLException {
    response.setContentType("text/html;charset=UTF-8");

    try (PrintWriter out = response.getWriter()) {

        int e_no=Integer.parseInt(request.getParameter("enrollment_no"));
        String branch=request.getParameter("branch");
        String sem=request.getParameter("semester");
        String f_name=request.getParameter("first_name");
        String l_name=request.getParameter("last_name");
        String email=request.getParameter("email");
        String pass=request.getParameter("password");

        Connection con;
        Statement stm;

        try {                
                String driver="sun.jdbc.odbc.JdbcOdbcDriver";
                Class.forName(driver);
                String db="jdbc:odbc:practicedb";
                con=DriverManager.getConnection(db);
                stm=con.createStatement();
                String query="insert into studenttbl values='"+e_no+"','"+branch+"','"+sem+"','"+f_name+"','"+l_name+"','"+email+"''"+pass+"'";

                stm.executeUpdate(query);
                out.println("Database Successfuly added");

        }
        catch(ClassNotFoundException | SQLException e) {                
        }
    }
    return null;
}

Answer 1

修改

String database = "FILE PATH ON YOUR LAPTOP";
    String url = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=" + database + ";DriverID=22;READONLY=true";
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection(url, "", "");
    java.sql.Statement stm = con.createStatement();

另外，在返回null之前添加catch statement。

---

正如@jpw指出的那样，您可能需要仔细检查插入查询。它应该是这样的：

String query="insert into studenttbl values('"+e_no+"','"+branch+"','"+sem+"','"+f_name+"','"+l_name+"','"+email+"''"+pass+"')";