studentaction.java

java 考试管理系统 很好的很强大 很好的很强大

package com.zjxy.hibernate.action;

import java.lang.reflect.InvocationTargetException;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.beanutils.BeanUtils;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.actions.DispatchAction;

import com.zjxy.hibernate.base.PageDAO;
import com.zjxy.hibernate.base.StudentManager;
import com.zjxy.hibernate.form.StudentForm;
import com.zjxy.hibernate.model.Student;
import com.zjxy.hibernate.model.User;
import com.zjxy.hibernate.pagerHelp.Pager;
import com.zjxy.hibernate.pagerHelp.PagerHelp;

public class StudentAction extends DispatchAction{
	/**
	 * 学生信息一览画面显示
	 * @param actionMapping
	 * @param actionForm
	 * @param httpServletRequest
	 * @param httpServletresponse
	 * @return
	 */
	 public ActionForward display(ActionMapping actionMapping,
             ActionForm actionForm,
             HttpServletRequest httpServletRequest,
             HttpServletResponse httpServletresponse) {
            //		 用于输出到页面的记录集合
	        List clInfos = null;
	        String sqlBean = "from com.zjxy.hibernate.model.Student";
	        // 记录总行数
	        int totalRows = 0;
	        StudentManager studentManager = new StudentManager();
	        List list = studentManager.getStudentList();
	        totalRows = list.size();
	        PageDAO pageDAO = new PageDAO();

	        // 取得当前表中的总行数

	        // 通过PagerHelper类来获取用于输出到页面的pager对象
	        Pager pager=PagerHelp.getPager(httpServletRequest,totalRows);

	        // 取出从startRow开始的pageSize行记录
	        try {
	            clInfos = pageDAO.findWithPage(pager.getPageSize(), pager.getStartRow(),sqlBean);
	            } catch (Exception ex) {
	                servlet.log(ex.toString());
	         }
	       
	         Integer total = Integer.valueOf(totalRows);
	         //把输出的记录集和pager对象保存到request对象中
	         httpServletRequest.setAttribute("TOTALROWS", total);
	         httpServletRequest.setAttribute("CLINFOS", clInfos);
	         httpServletRequest.setAttribute("PAGER", pager);
	            
         return actionMapping.findForward("display");
   }
	 /**
		 * 学生信息添加画面初期表示
		 * @param actionMapping
		 * @param actionForm
		 * @param httpServletRequest
		 * @param httpServletresponse
		 * @return
		 */
	 public ActionForward addDisplay(ActionMapping actionMapping,
       ActionForm actionForm,
       HttpServletRequest httpServletRequest,
       HttpServletResponse httpServletresponse) {
		 return actionMapping.findForward("addDisplay");
	 }
	 
	 
		/**
		 * 学生信息添加
		 * @param actionMapping
		 * @param actionForm
		 * @param request
		 * @param response
		 * @return
		 */
	 public ActionForward add(ActionMapping actionMapping,
       ActionForm form,
       HttpServletRequest request,
       HttpServletResponse response) {
		 
		 // 定义StudentForm对象用于获取页面信息
		 StudentForm studentForm = (StudentForm) form;
		 Student student = new Student();
		 User user = new User();
		 StudentManager studentManager = new StudentManager();
		 // 定义existFlag变量，用于判断学生帐号存在性判断
		 boolean existFlag = false;
		 // 定义ActionErrors对象
		 ActionErrors errors = new ActionErrors();
		 
		 // 将页面取得的信息设置值到Student JavaBean中
		 // 学生帐号
		 student.setStudentID(studentForm.getStudentID());
		 // 学生姓名
		 student.setStudentName(studentForm.getStudentName());
		 // 学生性别
		 student.setStudentSex(studentForm.getStudentSex());
		 // 学生联系电话
		 student.setStudentCall(studentForm.getStudentCall());
		 // 学生联系地址
		 student.setStudentAddress(studentForm.getStudentAddress());
		 // 学生所在班级
		 student.setStudentClass(studentForm.getStudentClass());
		 // 学生初始密码
		 student.setStudentNO(studentForm.getStudentNO());
		 
		 // 将页面取得的信息设置值到User JavaBean中
		 // 学生帐号
		 user.setUserID(studentForm.getStudentID());
		 // 学生密码
		 user.setPassword(studentForm.getStudentNO());
		 // 学生权限
		 user.setUserFlag("S");
		 
		 // 判断输入的学生帐号是否已经存在，存在则返回true，否则返回false
		 existFlag = studentManager.getStudentByID(studentForm.getStudentID());
		 if (existFlag) {
			 // 学生帐号已经存在的情况
			 errors.add("studentIDIsExist", new ActionError("oes.student.error.studentIDIsExist"));
	        	saveErrors(request, errors);
	        	return (new ActionForward(actionMapping.getInput()));
		 }
		 // 调用AdminManager类的addAdmin方法向数据库添加教师信息
		 studentManager.addStudent(student, user);
		 
		 //重定向：页面跳转
		 return actionMapping.findForward("addSuccess");
	 }
		
	   /**
		 * 学生信息修改画面初期表示
		 * @param actionMapping
		 * @param actionForm
		 * @param request
		 * @param response
		 * @return
		 */
	 public ActionForward modifyDisplay(ActionMapping actionMapping,
      ActionForm form,
      HttpServletRequest request,
      HttpServletResponse response) {
		 
      // 定义StudentForm对象用于获取页面信息
		 StudentForm studentForm = (StudentForm) form;
		 Student student = new Student();
		 StudentManager studentManager = new StudentManager();
		 
		 // 从页面取得要修改数据的sequenceID值
		 int sequenceID = Integer.parseInt(request.getParameter("sequenceID"));
		 // 调用getModifyInfoByID方法取得要修改的数据
		 student = studentManager.getModifyInfoByID(sequenceID);
		 // 将页面取得的信息设置值到Student JavaBean中
		 try {
			BeanUtils.copyProperties(studentForm, student);
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
   // 重定向：页面跳转
		 return actionMapping.findForward("modifyDisplay");
	 }
		/**
		 * 学生信息修改
		 * @param actionMapping
		 * @param actionForm
		 * @param request
		 * @param response
		 * @return
		 */
	 public ActionForward modify(ActionMapping actionMapping,
    ActionForm form,
    HttpServletRequest request,
    HttpServletResponse response) {
   
		 // 定义StudentForm对象用于获取页面信息
		 StudentForm studentForm = (StudentForm) form;
		 Student student = new Student();
		 Student studentOld = new Student();
		 User user = new User();
		 StudentManager studentManager = new StudentManager();
		 ActionErrors errors = new ActionErrors();
		 
   // 将页面取得的信息设置值到Admin JavaBean中
		 student.setSequenceID(studentForm.getSequenceID());
		 student.setStudentID(studentForm.getStudentID());
		 student.setStudentName(studentForm.getStudentName());
		 student.setStudentSex(studentForm.getStudentSex());
		 student.setStudentCall(studentForm.getStudentCall());
		 student.setStudentAddress(studentForm.getStudentAddress());
		 student.setStudentClass(studentForm.getStudentClass());
		 student.setStudentNO(studentForm.getStudentNO());

		 
   // 将页面取得的信息设置值到User JavaBean中
		 user.setSequenceID(studentForm.getSequenceID());
		 user.setUserID(studentForm.getStudentID());
		 user.setPassword(studentForm.getStudentNO());
		 user.setUserFlag("S");
		 
		 // 判断修改过的学生帐号是否在数据库中已经存在，若存在则报错
		 studentOld = studentManager.getModifyInfoByID(studentForm.getSequenceID());
		 if (!studentForm.getStudentID().equals(studentOld.getStudentID())) {
			 // 学生帐号已经被修改
			 if (studentManager.getStudentByID(studentForm.getStudentID())) {
				 // 学生帐号已经存在的情况
				 errors.add("studentIDIsExist", new ActionError("oes.student.error.studentIDIsExist"));
		        	saveErrors(request, errors);
		        	return (new ActionForward(actionMapping.getInput()));
			 }
		 }
		 // 修改学生信息：调用modifyAdminInfo方法
		 studentManager.modifyStudentInfo(student, user);
		 return actionMapping.findForward("modifySuccess");
	 }
	 /**
		 * 学生信息删除
		 * @param actionMapping
		 * @param actionForm
		 * @param request
		 * @param response
		 * @return
		 */
	 public ActionForward delete(ActionMapping actionMapping,
   ActionForm form,
   HttpServletRequest request,
   HttpServletResponse response) {
		 StudentManager studentManager = new StudentManager();
		 // 从页面取得要删除数据的sequenceID值
		 int sequenceID = Integer.parseInt(request.getParameter("sequenceID"));
		 studentManager.delete(sequenceID);
		 return actionMapping.findForward("deleteSuccess");
	 }	
	 
	 /**
		 * 学生信息查询
		 * @param actionMapping
		 * @param actionForm
		 * @param request
		 * @param response
		 * @return
		 */
	 public ActionForward search(ActionMapping actionMapping,
	         ActionForm form,
	         HttpServletRequest request,
	         HttpServletResponse response) {
		     StudentForm studentForm = (StudentForm) form;
		     StudentManager studentManager = new StudentManager();
			 String name = studentForm.getStudentIDSearch();
			 // 用于输出到页面的记录集合
		        List clInfos = null;
		        String sqlBean = "from com.zjxy.hibernate.model.Student as student where student.studentID=?";
		        // 记录总行数
		        int totalRows = 0;
		        List list = studentManager.getStudentList();
		        totalRows = list.size();
		        PageDAO pageDAO = new PageDAO();

		        // 取得当前表中的总行数

		        // 通过PagerHelper类来获取用于输出到页面的pager对象
		        Pager pager=PagerHelp.getPager(request,totalRows);

		        // 取出从startRow开始的pageSize行记录
		        try {
		            clInfos = pageDAO.findWithPage_search(pager.getPageSize(), pager.getStartRow(), sqlBean, name);
		            } catch (Exception ex) {
		                servlet.log(ex.toString());
		         }
		       
			         if (clInfos.size() == 0) {
			        	 request.setAttribute("noRecord", new ActionMessage("oes.student.error.noRecord"));
			         }
			         Integer total = Integer.valueOf(totalRows);
			         //把输出的记录集和pager对象保存到request对象中
			         request.setAttribute("TOTALROWS", total);
			         request.setAttribute("CLINFOS", clInfos);
			         request.setAttribute("PAGER", pager);
	             
		     request.setAttribute("searchPage", new ActionMessage("searchPage"));
			 return actionMapping.findForward("searchSuccess");
		 }
}