weblogaction.java

struts+hibernate+spring的blog,本人也是下载的

package com.weblog.web;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
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 org.apache.struts.action.DynaActionForm;
import org.apache.struts.actions.DispatchAction;

import com.weblog.model.Weblog;
import com.weblog.service.WeblogManager;

public class WeblogAction extends DispatchAction {
	private Log log = LogFactory.getLog(WeblogAction.class);

	private WeblogManager mgr = null;

	public void setMgr(WeblogManager weblogManager) {
		this.mgr = weblogManager;
	}

	public ActionForward cancel(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return mapping.findForward("list");
	}

	public ActionForward delete(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		if (log.isDebugEnabled()) {
			log.debug("entering 'delete' method...");
		}

		DynaActionForm weblogForm = (DynaActionForm) form;
		Weblog weblog = (Weblog) weblogForm.get("weblog");

		mgr.removeWeblog(new Long(request.getParameter("weblog.id")));

		ActionMessages messages = new ActionMessages();
		messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
				"user.deleted", weblog.getName()));

		saveMessages(request.getSession(), messages);

		return mapping.findForward("weblogs");

	}

	public ActionForward edit(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		if (log.isDebugEnabled()) {
			log.debug("entering 'edit' method...");
		}

		DynaActionForm userForm = (DynaActionForm) form;
		String weblogId = request.getParameter("id");

		// null userId indicates an add
		if (weblogId != null) {
			Weblog weblog = mgr.getWeblog(new Long(weblogId));

			if (weblog == null) {
				ActionMessages errors = new ActionMessages();
				errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
						"user.missing"));
				saveErrors(request, errors);

				return mapping.findForward("list");
			}

			userForm.set("weblog", weblog);
		}

		return mapping.findForward("edit");
	}

	public ActionForward save(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		if (log.isDebugEnabled()) {
			log.debug("entering 'save' method...");
		}

		if (isCancelled(request)) {
			return list(mapping, form, request, response);
		}

		// run validation rules on this form
		ActionMessages errors = form.validate(mapping, request);

		if (!errors.isEmpty()) {
			saveErrors(request, errors);

			return mapping.findForward("edit");
		}

		DynaActionForm weblogForm = (DynaActionForm) form;
		Weblog weblog = (Weblog) weblogForm.get("weblog");

		mgr.saveWeblog(weblog);

		ActionMessages messages = new ActionMessages();
		messages.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(
				"weblog.saved", weblog.getName()));
		saveMessages(request.getSession(), messages);

		return mapping.findForward("weblogs");

	}

	public ActionForward list(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		if (log.isDebugEnabled()) {
			log.debug("entering 'list' method...");
		}

		request.setAttribute("weblogs", mgr.getWeblogs());

		return mapping.findForward("list");

	}

	public ActionForward unspecified(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		return list(mapping, form, request, response);
	}

}