studentbean.java

基于MVC模式的学生选课系统。实现学生信息注册、学生选课和管理员的课程信息维护操作

package bean;
import dao.DataAccess;
import dao.Status;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2006</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */


public class StudentBean {

    private Status status;
    private DataAccess studentDAO;

    private String number = "";
    private String name = "";
    private String email = "";

    public StudentBean() {

        status = new Status();
        studentDAO = new DataAccess();
    }

    public void setNumber(String id){

        if((id == null)||(id.length()==0)||(id.length()>9)){

                status.addException(new Exception("Please input your number(8 bit)"));
        }else{

                number = id;
        }
    }

    public String getNumber(){

        return number;
    }

    public void setName ( String value ) {
        if ((value == null)||(value.length()==0)) {

                status.addException(new Exception("Please input your name"));
        }else{

                name = value;
        }
    }

    public String getName(){

        return name;
    }

    public void setEmail ( String value ) {


        if ((value == null)||(value.length()==0)) {

                status.addException(new Exception("Please input your email address"));
        }else{
                if(verifyEmail(value)){

                        email = value;
                }else{
                        status.addException(new Exception(
                                        "The email address is not improperly formated"));
                }
        }
    }

    public String getEmail(){

        return email;
    }

    public boolean wasSuccessful() {

        return status.isSuccessful();
    }

    public Status getStatus(){

        return status;
    }
    public void processRequest(){

        if(wasSuccessful()){
                try{

                        studentDAO.insert(number,name,email);
                }catch(Exception ex){

                        status.addException(ex);
                }
        }
    }

    public boolean search(){
		
		boolean flag=studentDAO.search(this.number);
		//System.out.println(this.number);
		return flag;
	}
    public boolean verifyEmail(String email){

        boolean result = true;

        if(email.indexOf('@')==-1){

                result = false;
        }

        int dotIdx = email.lastIndexOf('.');
        if(dotIdx == -1){

                result = false;
        }else{
                String str = email.substring(dotIdx+1);
                if(str.equals("com")||str.equals("edu")||str.equals("org")||str.equals("net")){

                        result = true;
                }
        }

        return result;
    }

}