studentactions.java

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/*
 * StudentActions.java
 *
 * Created on 2006年6月6日, 下午1:15
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.web.struts.action;

import javax.servlet.http.*;
import org.apache.struts.action.*;
import enova.service.*;
import enova.pojo.*;
import enova.util.Const;

/**
 *
 * @author vlinux
 */
public class StudentActions extends DispatchAction {
    
    private Integer id;
    private String number;
    private String name;
    private String sex;
    private String nation;
    private String birthday;
    private String birthPlace;
    private Integer enrollYear;
    private Integer classId;
    private String password;
    private StudentService ss = (StudentService)ServiceFactory.makeService("StudentService");
    
    private void loadForm(javax.servlet.http.HttpServletRequest request){
        this.number = request.getParameter("number");
        this.name = request.getParameter("name");
        this.sex = request.getParameter("sex");
        this.nation = request.getParameter("nation");
        this.birthday = request.getParameter("birthday");
        this.birthPlace = request.getParameter("birthPlace");
        this.password = request.getParameter("password");
        try{
            int intId = Integer.parseInt(request.getParameter("id"));
            this.id = new Integer(intId);
        }catch(Exception e){
            this.id = null;
        }
        try{
            int intClassId = Integer.parseInt(request.getParameter("classId"));
            this.classId = new Integer(intClassId);
        }catch(Exception e){
            this.classId = null;
        }
        try{
            int intEnrollYear = Integer.parseInt(request.getParameter("enrollYear"));
            this.enrollYear = new Integer(intEnrollYear);
        }catch(Exception e){
            this.enrollYear = null;
        }
    }
    
    
    
    //添加学生
    public ActionForward add(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if( this.verifyRoot(request) )
            return mapping.findForward(Const.ACCESS_DENY);
        try{
            loadForm(request);
            Student s = new Student(number,name,enrollYear,password,classId);
            s.setBirthPlace(birthPlace);
            s.setBirthday(java.sql.Date.valueOf(birthday));
            s.setNation(nation);
            s.setSex(sex);
            ss.updateOrCreate(s);
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }catch(UniqueException ue){
            request.setAttribute(Const.MESSAGES,"该记录已经存在");
            return mapping.findForward(Const.ADD);
        }
        request.setAttribute(Const.MESSAGES,"创建成功");
        return mapping.findForward(Const.ADD);
    }
    
    
    //删除学生
    public ActionForward delete(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if( this.verifyRoot(request) )
            return mapping.findForward(Const.ACCESS_DENY);
        try{
            loadForm(request);
            ss.delete(id);
            request.setAttribute("students",ss.getByClassId(null));
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }catch(NotExistException nee){
            request.setAttribute(Const.MESSAGES,"记录不存在");
            return mapping.findForward(Const.VIEW);
        }
        request.setAttribute(Const.MESSAGES,"删除成功");
        return mapping.findForward(Const.VIEW);
    }
    
    
    //修改学生
    public ActionForward update(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if( this.verifyRoot(request) )
            return mapping.findForward(Const.ACCESS_DENY);
        try{
            loadForm(request);
            Student s = new Student(number,name,enrollYear,password,classId);
            s.setBirthPlace(birthPlace);
            s.setBirthday(java.sql.Date.valueOf(birthday));
            s.setNation(nation);
            s.setSex(sex);
            s.setId(id);
            ss.updateOrCreate(s);
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }catch(UniqueException ue){
            request.setAttribute(Const.MESSAGES,"该记录已经存在");
            return mapping.findForward(Const.UPDATE);
        }finally{
            try{
                request.setAttribute("student",ss.get(id));
            }catch(StoreException se){
                request.setAttribute(Const.MESSAGES,"数据库出错");
                return mapping.findForward(Const.STORE_EXCEPTION);
            }
        }
        request.setAttribute(Const.MESSAGES,"修改成功");
        return mapping.findForward(Const.UPDATE);
    }
    
    
    //获取学生
    public ActionForward get(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if( this.verifyRoot(request) )
            return mapping.findForward(Const.ACCESS_DENY);
        try{
            loadForm(request);
            request.setAttribute("student",ss.get(id));
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.UPDATE);
    }
    
    //查看学生
    public ActionForward view(ActionMapping mapping, ActionForm actionForm,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        if( this.verifyRoot(request) )
            return mapping.findForward(Const.ACCESS_DENY);
        try{
            loadForm(request);
            java.util.List list = null;
            if( number!=null && number.length()>0 )
                list = ss.getByNumber(number);
            else if( classId!=null && (name==null||name.length()<=0) )
                list = ss.getByClassId(classId);
            else if( classId==null && name!=null )
                list = ss.getByName(name);
            else if( classId!=null && name!=null )
                list = ss.getByClassIdAndName(classId,name);
            else{
                list = ss.getByClassId(null);
            }
            request.setAttribute("students",list);
        }catch(StoreException se){
            request.setAttribute(Const.MESSAGES,"数据库出错");
            return mapping.findForward(Const.STORE_EXCEPTION);
        }
        return mapping.findForward(Const.VIEW);
    }
}