我也了一个，总是不成功，各位指点一下.
try{DBAccess newAccess = new DBAccess("127.0.0.1:1433","wu","sa","sa");

            String sql = null;
            ArrayList resultList = new ArrayList();

            //sql = "insert into time_zone(Use_leap_seconds) values('N')";
            //resultList.add(sql);
            //sql = "update time_zone set Use_leap_seconds='Y' where Use_leap_seconds='N'";
            //resultList.add(sql);

            //newAccess.executeUpdate(resultList);
            

            sql = "select Course,Student,BookName from Book WHERE TeacherID='11111'";     //添加接口

            resultList = newAccess.executeQuery(sql);
            for(int i=0;i<resultList.size();i++){
              HashMap hash=(HashMap)resultList.get(i);
              String course=hash.get("Course").toString();
                          String student=hash.get("Student").toString();
                          String bookname=hash.get("BookName").toString();
                          out.println("课程名称是"+course+",学生专业是"+student);
              //if(bookname==null)
                         // out.println("你尚未提交教材，请提交");
                    //else
                          //out.println("你已经选择了教材，教材名称是"+bookname);
            }
            newAccess.close();}catch(DBException e){
  out.println("the exception is----"+e);
       }