jquery flexigrid for java增删查改完整示例--后台

新增,修改,删除的就不贴了,那个原来是怎么写就怎么写

DAO层的实现类:

/**

* 根据主键ID查找一条数据

*/

public BlPaper findById(Long id) {

try {

BlPaper instance = (BlPaper) getHibernateTemplate().get(

"net.bolue.drps.vo.BlPaper", id);

return instance;

} catch (RuntimeException re) {

throw re;

}

}

/**

* 根据条件统计所有数据总数

*/

public Long count(String sql) {

try {

String countString = "select count(*) from BlPaper as b where 1=1 "

+ sql;

List list = getHibernateTemplate().find(countString);

Iterator iter = list.iterator();

Long count = 0l;

while (iter.hasNext()) {

count = (Long) iter.next();

}

return count;

} catch (RuntimeException re) {

throw re;

}

}

/**

* 根据条件查询出数据

*/

public List findAll(String sql, Integer firstResult, Integer maxResults) {

Session session = getHibernateTemplate().getSessionFactory()

.getCurrentSession();

try {

String queryString = "from BlPaper as b where 1=1 " + sql;

Query q = session.createQuery(queryString);

q.setFirstResult(firstResult);

q.setMaxResults(maxResults);

return q.list();

} catch (RuntimeException re) {

throw re;

}

}

这没啥说的,和普通的没啥区别

Service层的实现类:

/**

* 根据主键ID查找一条数据

*/

public PrintWriter findById(HttpServletResponse response, Long id)

throws IOException {

BlPaper vo = blPaperDAO.findById(id);

Map map = new HashMap();

map.put("papId", vo.getPapId());

map.put("papTitle", vo.getPapTitle());

map.put("papTitleS", vo.getPapTitleS());

map.put("papAuthor", vo.getPapAuthor());

map.put("papKeyword", vo.getPapKeyword());

map.put("papAbstract", vo.getPapAbstract());

map.put("papAuthorF", vo.getPapAuthorF());

map.put("papDepart", vo.getPapDepart());

map.put("papJourney", vo.getPapJourney());

map.put("papPubtime", DateUtil.formatDate(vo.getPapPubtime()));

map.put("papVolum", vo.getPapVolum());

map.put("papPages", vo.getPapPages());

map.put("papSupport", vo.getPapSupport());

map.put("papText", vo.getPapText());

map.put("papTop", vo.getPapTop());

map.put("papPublish", vo.getPapPublish());

map.put("papDownload", vo.getPapDownload());

map.put("papAddman", vo.getPapAddman());

map.put("papAddtime", DateUtil.formatDateTime(vo.getPapAddtime()));

JSONObject jsonObject = new JSONObject(map);

String jsonString = jsonObject.toString();

return WriterUtil.getJSONString(response, jsonString);

}

/**

* 根据条件查询出数据

*/

public PrintWriter findAll(HttpServletResponse response, String sql,

Integer page, Integer firstResult, Integer maxResults)

throws IOException {

Map pageMap = new HashMap();

pageMap.put("page", page); //当前页数设置

pageMap.put("total", blPaperDAO.count(sql));
//总数据量设置

List list = blPaperDAO.findAll(sql, firstResult, maxResults);

List mapList = new ArrayList();

for (int i = 0; i < list.size(); i++) {

BlPaper vo = (BlPaper) list.get(i);

StringBuffer ahSb=new StringBuffer();

ahSb.append("<a href=\"#\" onClick=\"openDetail('");

ahSb.append(vo.getPapId());

ahSb.append("')\">");

ahSb.append(vo.getPapTitle());

ahSb.append("</a>");

Map cellMap = new HashMap();

cellMap.put("id", vo.getPapId()); //注意,这个map的name一定要是id,这个就是flexigrid的行的ID

cellMap.put("cell", new Object[] { i + 1, ahSb.toString(), vo.getPapAuthor(),

vo.getPapJourney(), DateUtil.formatDate(vo.getPapPubtime()) });

mapList.add(cellMap);

}

pageMap.put("rows", mapList);

JSONObject jsonObject = new JSONObject(pageMap);

String jsonString = jsonObject.toString();

return WriterUtil.getJSONString(response, jsonString);

}

说明:

1.JSONObject这个是在json.org上面的开源代码,可以下的到,主要是产生JSON格式的数据

2.WriterUtil这个的代码是:

package net.bolue.util;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class WriterUtil {

public static PrintWriter getJSONString(HttpServletResponse response,

String jsonString) throws IOException {

response.setContentType("text/html");

response.setCharacterEncoding("utf-8");

response.setHeader("Pragma", "no-cache");

response.setHeader("Cache-Control", "no-cache, must-revalidate");

response.setHeader("Pragma", "no-cache");

PrintWriter out = response.getWriter();

out.write(jsonString);

out.flush();

out.close();

return out;

}

}

Action中的代码,就更容易了

public ActionForward findById(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws IOException {

Long id = ParserUtil.parseLong(request.getParameter("id"));

blPaperService.findById(response, id);

return null;

}

public ActionForward findByAll(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws IOException {

String papTitle = request.getParameter("papTitle");

String papTitleS = request.getParameter("papTitleS");

String papAuthor = request.getParameter("papAuthor");

String papKeyword = request.getParameter("papKeyword");

String papAbstract = request.getParameter("papAbstract");

String papDepart = request.getParameter("papDepart");

String sortname = request.getParameter("sortname");// 排序字段,flexigrid的参数

String sortorder = request.getParameter("sortorder");// 排序方式,flexigrid的参数

Integer page = ParserUtil.parseInt(request.getParameter("page"));// 得到当前页数,flexigrid的参数

Integer maxResults = ParserUtil.parseInt(request.getParameter("rp"));// 得到每页显示行数,flexigrid的参数

Integer firstResult = (page - 1) * maxResults;// 计算查询开始数据下标

StringBuffer sb = new StringBuffer();

if (papTitle != null && !"".equals(papTitle)) {

sb.append(" and b.papTitle like '%" + papTitle + "%' ");

}

if (papTitleS != null && !"".equals(papTitleS)) {

sb.append(" and b.papTitleS like '%" + papTitleS + "%' ");

}

if (papAuthor != null && !"".equals(papAuthor)) {

sb.append(" and b.papAuthor like '%" + papAuthor + "%' ");

}

if (papKeyword != null && !"".equals(papKeyword)) {

sb.append(" and b.papKeyword like '%" + papKeyword + "%' ");

}

if (papAbstract != null && !"".equals(papAbstract)) {

sb.append(" and b.papAbstract like '%" + papAbstract + "%' ");

}

if (papDepart != null && !"".equals(papDepart)) {

sb.append(" and b.papDepart like '%" + papDepart + "%' ");

}

if (sortname != null && !"".equals(sortname)) {

sb.append(" order by b." + sortname + " " + sortorder);

}

blPaperService.findAll(response, sb.toString(), page, firstResult,

maxResults);

return null;

}

这些代码不用解释了,一看就知道了