newslistaction.java

struts spring hibernate实现的简单新闻系统

package com.pure.web.action.news;

import java.util.List;

import javax.servlet.ServletContext;
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.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.pure.business.INewsService;
import com.pure.comm.Page;
import com.pure.comm.PageHelper;
import com.pure.comm.ParamUtil;
import com.pure.sys.Constant;

public class NewsListAction extends Action {
	protected final Log logger = LogFactory.getLog(getClass());

	private INewsService newsService;

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		return toList(mapping, form, request, response);
	}

	public ActionForward toList(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		String contextPath = request.getContextPath();
		//取真实路径
		ServletContext servletContext = servlet.getServletContext();
		String realPath = servletContext.getRealPath("/");
		
		int perPage = 10;
		int cPage = ParamUtil.getInt(request, "page", 1);
		String totalHql = "select count(id) from News";
		PageHelper pageHelper = new PageHelper(request);
		perPage = pageHelper.doCustomPerPage(perPage);

		Page page = new Page();
		page.setPerPage(perPage);
		page.setPage(cPage);
		page.setRealPath(realPath);
		page.setPageTemplate("page.ftl");
		page.setHql("from News news order by news.id desc ");
		page.setTotal(this.getNewsService().getTotal(totalHql));
		page.setContextPath(contextPath);
		page.setUrl("newsList" + Constant.FILEPREFIX);
		page.setStartRs((cPage - 1) * perPage);

		List newsList = this.getNewsService().getList(page);
		request.setAttribute("newsList", newsList);
		request.setAttribute("page", pageHelper.getPageBreakStr(page));
		return mapping.findForward("success");
	}

	public INewsService getNewsService() {
		return newsService;
	}

	public void setNewsService(INewsService newsService) {
		this.newsService = newsService;
	}

}