noticeaction.java

基于asp.net的web开发的入门资料。

package com.oa.struts.actions;

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

import org.apache.log4j.Logger;
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.action.ActionMessages;

import com.oa.hibernate.beans.Meeting;
import com.oa.hibernate.beans.Notice;
import com.oa.hibernate.dao.NoticeDAO;
import com.oa.struts.forms.NoticeForm;
import com.oa.struts.forms.PageForm;
import com.oa.struts.util.Constants;
import com.oa.struts.util.Pager;

public class NoticeAction extends BaseAction {

	protected NoticeDAO noticeDAO;

	Logger log = Logger.getLogger(this.getClass());

	public NoticeDAO getNoticeDAO() {
		return noticeDAO;
	}

	public void setNoticeDAO(NoticeDAO noticeDAO) {
		this.noticeDAO = noticeDAO;
	}

	public ActionForward list(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		PageForm pageForm = (PageForm) form;

		// get pager
		Pager pager = noticeDAO.findPager(pageForm.getPageSize(), pageForm
				.getPageNo());

		// set noticeList
		request.setAttribute("noticeList", pager.getResultList());

		// set pager
		request.setAttribute("pager", pager);

		// save session
		setSession(request, Constants.PAGER_NOTICE, pageForm);

		ActionForward forward = mapping.findForward(Constants.LIST_KEY);
		return (forward);
	}

	public ActionForward back(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		PageForm pageForm = (PageForm) getSession(request,
				Constants.PAGER_NOTICE);

		// get pager
		Pager pager = noticeDAO.findPager(pageForm.getPageSize(), pageForm
				.getPageNo());

		// set noticeList
		request.setAttribute("noticeList", pager.getResultList());

		// set pager
		request.setAttribute("pager", pager);

		// save session
		setSession(request, Constants.PAGER_NOTICE, pageForm);

		ActionForward forward = mapping.findForward(Constants.LIST_KEY);
		return (forward);
	}

	public ActionForward add(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionForward forward = mapping.findForward(Constants.ADD_KEY);
		return (forward);
	}

	public ActionForward insert(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();
		NoticeForm noticeForm = (NoticeForm) form;
		String username = getUsername(request);

		// insert object
		Notice notice = new Notice();
		notice.setSender(username);
		notice.setTitle(noticeForm.getTitle());
		notice.setContent(noticeForm.getContent());
		notice.setSendtime(noticeForm.getSendtime());
		//notice.setIsread(Constants.NO);
		noticeDAO.insert(notice);

		// save messages
		messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
				"notice.message.add.success"));
		saveErrors(request, messages);

		// get pageform from session
		PageForm pageForm = (PageForm) getSession(request,
				Constants.PAGER_ADDRESS);

		// get pager form list page
		Pager pager = noticeDAO.findPager(pageForm.getPageSize(), pageForm
				.getPageNo());
		request.setAttribute("noticeList", pager.getResultList());
		request.setAttribute("pager", pager);

		return mapping.findForward(Constants.LIST_KEY);
	}
	
	public ActionForward view(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();
		String id = request.getParameter("id");

		if (id == null) {
			// id not exist, save messages
			messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"notice.message.edit.notexist"));
			saveErrors(request, messages);
			return mapping.findForward(Constants.LIST_KEY);
		} else {
			// get object
			Notice notice = noticeDAO.findById(id);
			if (notice == null) {
				messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
						"notice.message.edit.notexist"));
				saveErrors(request, messages);
				return mapping.findForward(Constants.LIST_KEY);
			}

			// save form object
			NoticeForm noticeForm = new NoticeForm();
			noticeForm.setId(notice.getId().toString());
			noticeForm.setSender(notice.getSender());
			noticeForm.setTitle(notice.getTitle());
			noticeForm.setContent(notice.getContent());
			noticeForm.setSendtime(notice.getSendtime());
			//noticeForm.setIsread(notice.getIsread());

			// save in request
			request.setAttribute("noticeFormBean", noticeForm);

			return mapping.findForward(Constants.VIEW_KEY);
		}
	}
	/*
	public ActionForward read(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();
		String id = request.getParameter("id");
		
		if (id == null) {
			// id not exist, save messages
			messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"notice.message.edit.notexist"));
			saveErrors(request, messages);
			return mapping.findForward(Constants.LIST_KEY);
		} else {
			// get object
			Notice notice = noticeDAO.findById(id);
			if (notice == null) {
				messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
						"notice.message.edit.notexist"));
				saveErrors(request, messages);
				return mapping.findForward(Constants.LIST_KEY);
			}
			
			// set isread
			notice.setIsread(Constants.YES);
			noticeDAO.update(notice);
			
			String username = getUsername(request);
			
			// get pageForm from session
			PageForm pageForm = (PageForm)getSession(request, Constants.PAGER_NOTICE);
			
			// get pager form list page
			Pager pager = noticeDAO.findPager(pageForm
					.getPageSize(), pageForm.getPageNo());
			request.setAttribute("noticeList", pager.getResultList());
			request.setAttribute("pager", pager);
		}
		return mapping.findForward(Constants.LIST_KEY);
	}
*/
	public ActionForward edit(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();
		String id = request.getParameter("id");

		if (id == null) {
			// id not exist, save messages
			messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"notice.message.edit.notexist"));
			saveErrors(request, messages);
			return mapping.findForward(Constants.LIST_KEY);
		} else {
			// get object
			Notice notice = noticeDAO.findById(id);
			if (notice == null) {
				messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
						"notice.message.edit.notexist"));
				saveErrors(request, messages);
				return mapping.findForward(Constants.LIST_KEY);
			}

			// save form object
			NoticeForm noticeForm = new NoticeForm();
			noticeForm.setId(notice.getId().toString());
			noticeForm.setSender(notice.getSender());
			noticeForm.setTitle(notice.getTitle());
			noticeForm.setContent(notice.getContent());
			noticeForm.setSendtime(notice.getSendtime());

			// save in request
			request.setAttribute("noticeFormBean", noticeForm);

			return mapping.findForward(Constants.EDIT_KEY);
		}
	}

	public ActionForward update(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();
		NoticeForm noticeForm = (NoticeForm) form;
		Notice notice = new Notice();

		// update object
		notice.setId(new Integer(noticeForm.getId()));
		notice.setSender(noticeForm.getSender());
		notice.setTitle(noticeForm.getTitle());
		notice.setContent(noticeForm.getContent());
		notice.setSendtime(noticeForm.getSendtime());
		//notice.setIsread(Constants.NO);
		noticeDAO.update(notice);

		// save messages
		messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
				"notice.message.edit.success"));
		saveErrors(request, messages);

		// get pageForm from session
		PageForm pageForm = (PageForm) getSession(request,
				Constants.PAGER_NOTICE);

		// get pager form list page
		Pager pager = noticeDAO.findPager(pageForm.getPageSize(), pageForm
				.getPageNo());
		request.setAttribute("noticeList", pager.getResultList());
		request.setAttribute("pager", pager);

		ActionForward forward = mapping.findForward(Constants.LIST_KEY);
		return (forward);
	}

	public ActionForward delete(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionMessages messages = new ActionMessages();

		String id = request.getParameter("id");
		if (id == null) {
			// if id not exist
			messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"notice.message.edit.notexist"));
		} else {
			// delete object
			noticeDAO.delete(id);

			// save messages
			messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
					"notice.message.delete.success"));

			// get pageForm from session
			PageForm pageForm = (PageForm) getSession(request,
					Constants.PAGER_NOTICE);

			// get pager form list page
			Pager pager = noticeDAO.findPager(pageForm.getPageSize(), pageForm
					.getPageNo());
			request.setAttribute("noticeList", pager.getResultList());
			request.setAttribute("pager", pager);
		}
		saveErrors(request, messages);
		return mapping.findForward(Constants.LIST_KEY);
	}
}