newshelp.java

用ajax在ssh框架下发挥

package com.news.struts.action;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import com.news.page.Page;
import com.news.page.PageHelper;
import com.news.service.INewsService;
import com.news.struts.form.AddNewsForm;

public class NewsHelp {
	public void  queryHelp(HttpServletRequest request,String strHql,String strHql2,INewsService news,AddNewsForm addNewsForm){
		/**
		 * 获取参数信息
		 */
		int perPage = 10;
		String contextPath = request.getContextPath();
		int cPage = 1;
		String strPage = request.getParameter("page");
		if(strPage!=null && !strPage.equals("")){
			cPage = Integer.parseInt(strPage);
		}
		PageHelper pageHelper = new PageHelper(request);
		perPage = pageHelper.doCustomPerPage(perPage);
		Page page = new Page();
		
		/**
		 * 设置分页参数
		 */
		page.setPerPage(perPage);
		page.setPage(cPage);
		page.setHql(strHql);
		page.setTotal(news.getTotal(strHql2+strHql,addNewsForm));
		page.setParam("fun=query");
		page.setContextPath(contextPath);
		page.setUrl(request.getServletPath());
		page.setStartRs((cPage - 1) * perPage);

		/**
		 * 获取单页数据集
		 */
		List newsList = news.getList(page,addNewsForm);	
		addNewsForm.setList(newsList);
		String strPageBreak = pageHelper.getPageBreakStr(page);
		addNewsForm.setStrPageBreak(strPageBreak);
	}
}