瀛︿範浣跨敤struts+hibernate瀹炵幇涓涓氱敤鐨勫垎欏電▼搴忋?/span>
鍐呭錛?/span>
鍒嗛〉紼嬪簭鏄綉欏佃璁＄粡甯擱渶瑕佸疄鐜扮殑鍩烘湰鍔熻兘銆備絾鏈夌殑鍒嗛〉紼嬪簭鐩存帴宓屽湪jsp欏甸潰涓婏紝涓嶄粎宸ヤ綔閲忚緝澶э紝浠ｇ爜涔熼毦浠ラ噸鐢ㄣ傛湰嬈¤瘯楠屽皢浣跨敤struts+hibernate鏉ュ疄鐜伴氱敤鐨勫垎欏電▼搴忋備笉鍚屽姛鑳界殑浠ｇ爜灝介噺鍒嗙錛屼互婊¤凍閫氱敤鎬ц姹傘?/span>
棣栧厛闇瑕佸緩绔嬩竴涓〃錛屽涓婸roduct,鍚勫瓧孌佃璁″涓?鍙嚜鐢辨洿鏀?錛?/span>
ID int primary key,
Typeid varchar(20),
Name varchar(50),
Price varchar(20),
Memo varchar(100).
姝ラ錛?/span>
1 寤虹珛web宸ョ▼錛屽悕瀛椾負”Fenye”.
2 娣誨姞hibernate錛岀敓鎴?/span>Product琛ㄧ殑.hbm.xml鍜?/span>pojo綾匯傝繖涓緢綆鍗曪紝涓嶅啀璧樿堪銆?/span>
3 鎺ョ潃鍐欐暟鎹闂眰錛屾垜浠皢鍏跺垎涓?/span>Dao鍜?/span>ProDao涓や釜綾匯傚叾涓?/span>Dao鏄釜鍏叡鐨勫熀綾伙紱ProDao緇ф壙瀹冿紝騫朵笌action閫氫俊鍙栧緱鍙傛暟銆傝繖鏍瘋璁＄殑濂藉鏄細濡傛灉闇瑕佸User榪欎釜琛ㄨ繘琛屽垎欏墊樉紺猴紝鍙渶娣誨姞涓涓?/span>UserDao綾伙紝騫惰瀹冪戶鎵?/span>Dao綾匯?/span>
Dao綾葷殑浠ｇ爜濡備笅錛屽彲浠ユ牴鎹渶瑕佹坊鍔狅細澶存枃浠惰嚜宸卞鍏ャ?/span>
public class Dao {
private Session session=null;
public Dao() {
}
public Session getSession()
{
session = HibernateSessionFactory.getSession();
return session;
}
public int getCount(String pojo)
{
String sql="select count(*) from "+pojo ;
this.getSession();
try {
Query q = getSession().createQuery(sql);
List cc = q.list();
Integer rows = (Integer) cc.get(0);
return rows.intValue();
} catch (HibernateException ex) {
System.out.print("ex::"+ex.getMessage());
return 0;
}
}
public List getlist(Query query, String pojo,int pagesize,int currow) throws HibernateException
{
List list = null;
this.getSession();
query.setFirstResult(currow);
query.setMaxResults(pagesize);
list=query.list();
//session.flush();
if(session!=null)
session.close();
return list;
}
public List getlist(Query query,int pagesize,int currow)
{
String[] str = query.getQueryString().split("from");
String[] table =str[1].trim().split(" ");
System.out.println("table:"+table[0]);
return getlist(query,table[0],pagesize,currow);
}
}
ProDao綾葷殑浠ｇ爜濡備笅錛?/span>
public class PinfoDao extends Dao{
private Session session;
public PinfoDao() {
super();
}
public List list(int pagesize,int currow)
{
Query query =getSession().createQuery("from PInfo");
List li=getlist(query, pagesize, currow);
return li;
}
public Session getSession()
{
// Configuration config=null;
session = HibernateSessionFactory.getSession();
return session;
}
public int getCount()
{
String sql="select count(*) from PInfo";
Query q = getSession().createQuery(sql);
List cc = q.list();
Integer a = (Integer) cc.get(0);
System.out.println("count:"+a.intValue());
return a.intValue();
}
}
4 涓嬮潰鍐欓〉闈㈡帶鍒剁▼搴忥紝鍚屾牱灝嗕唬鐮佸垎紱諱負涓や釜綾?/span>Page綾誨拰Pagehelp綾匯?/span>
Page綾誨鐞嗛〉闈㈢浉鍏崇殑涓浜涜緗紝濡備竴欏墊樉紺哄灝戞潯璁板綍錛岃綆楀叡鏈夊灝戦〉錛屽叡鏈夊灝戣褰曪紝褰撳墠欏電爜絳夈?/span>
PageHelp綾繪帴鏀?/span>jsp欏甸潰浼犳潵鐨勫弬鏁幫紝騫惰皟鐢?/span>Page綾誨鐞嗐?/span>
Page綾諱唬鐮侊細
public class Page {
private int totalRows; //鎬昏鏁?/span>
private int pageSize = 3; //姣忛〉鏄劇ず鐨勮鏁?/span>
private int currentPage; //褰撳墠欏靛彿
private int totalPages; //鎬婚〉鏁?/span>
private int startRow; //褰撳墠欏靛湪鏁版嵁搴撲腑鐨勮搗濮嬭
public Page(int totalRows1) {
totalRows = totalRows1;
totalPages=totalRows/pageSize;
int mod=totalRows%pageSize;
if(mod>0){
totalPages++;
}
currentPage = 1;
startRow = 0;
}
public int getStartRow() {
return startRow;
}
public int getTotalPages() {
return totalPages;
}
public int getCurrentPage() {
return currentPage;
}
public int getPageSize() {
return pageSize;
}
public void setTotalRows(int totalRows) {
this.totalRows = totalRows;
}
public void setStartRow(int startRow) {
this.startRow = startRow;
}
public void setTotalPages(int totalPages) {
this.totalPages = totalPages;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getTotalRows() {
return totalRows;
}
public void first() {
currentPage = 1;
startRow = 0;
}
public void previous() {
if (currentPage == 1) {
return;
}
currentPage--;
startRow = (currentPage - 1) * pageSize;
}
public void next() {
if (currentPage < totalPages) {
currentPage++;
}
startRow = (currentPage - 1) * pageSize;
}
public void last() {
currentPage = totalPages;
startRow = (currentPage - 1) * pageSize;
}
public void refresh(int _currentPage) {
currentPage = _currentPage;
if (currentPage > totalPages) {
last();
}
}
}
Pagehelp綾諱唬鐮佸涓嬶細
public class Pagehelp {
public static Page getPager(HttpServletRequest httpServletRequest,int totalRows) {
//瀹氫箟pager瀵硅薄錛岀敤浜庝紶鍒伴〉闈?/span>
Page pager = new Page(totalRows);
//浠?/span>Request瀵硅薄涓幏鍙栧綋鍓嶉〉鍙?/span>
String currentPage = httpServletRequest.getParameter("currentPage");
//濡傛灉褰撳墠欏靛彿涓虹┖錛岃〃紺轟負棣栨鏌ヨ璇ラ〉
//濡傛灉涓嶄負絀猴紝鍒欏埛鏂?/span>page瀵硅薄錛岃緭鍏ュ綋鍓嶉〉鍙風瓑淇℃伅
if (currentPage != null) {
pager.refresh(Integer.parseInt(currentPage));
}
//鑾峰彇褰撳墠鎵ц鐨勬柟娉曪紝棣栭〉錛屽墠涓欏碉紝鍚庝竴欏碉紝灝鵑〉銆?/span>
String pagerMethod = httpServletRequest.getParameter("pageMethod");
if (pagerMethod != null) {
if (pagerMethod.equals("first")) {
pager.first();
} else if (pagerMethod.equals("previous")) {
pager.previous();
} else if (pagerMethod.equals("next")) {
pager.next();
} else if (pagerMethod.equals("last")) {
pager.last();
}
}
return pager;
}
}
5 涓鍒囧噯澶囧伐浣滅粨鏉熷悗錛屼笅闈㈠啓action鏉ヨ皟鐢ㄨ繖浜涚被銆?/span>
List list = null;//鐢ㄤ簬杈撳嚭鍒伴〉闈㈢殑璁板綍闆嗗悎
int totalRows;//璁板綍鎬昏鏁?/span>
PinfoDao dao=new PinfoDao();
totalRows=dao.getCount();
System.out.print("鎬昏鏁?/span>=="+totalRows);
Page page=Pagehelp.getPager(request,totalRows);
try {
list= dao.list(page.getPageSize(), page.getStartRow());
} catch (HibernateException ex) {
System.out.print("action閲岀殑閿欒="+ex.getMessage());
}
request.setAttribute("page",page);
request.setAttribute("list",list);
return mapping.findForward("list");
6 鏈鍚庢槸鏄劇ず欏甸潰plist銆傚湪struts-config.xml鏂囦歡涓坊鍔?/span>forward璇彞錛?/span><forward name="list" path="/plist.jsp"></forward>銆?/span>
plist.jsp欏甸潰閮ㄥ垎浠ｇ爜濡備笅錛?/span>
<table align="center" border="1">
<tr>
<td>浜у搧綾誨埆</td>
<td>浜у搧鍚嶇О</td>
<td>浜у搧浠鋒牸</td>
<td>浜у搧澶囨敞</td>
</tr>
<!鈥?/span>涓嬮潰鎵撳嵃list涓殑鍚勫睘鎬?/span>-->
<tr >
<td colspan="4">
絎?/span><bean:write name="page" property="currentPage"/>欏?/span>
鍏?/span><bean:write name="page" property="totalPages" />欏?/span>
<html:link action="/page.do?pageMethod=first"
paramName="page" paramProperty="currentPage"
paramId="currentPage">棣栭〉</html:link>
<html:link action="/page.do?pageMethod=previous"
paramName="page" paramProperty="currentPage"
paramId="currentPage">涓婁竴欏?/span></html:link>
<html:link action="/page.do?pageMethod=next"
paramName="page" paramProperty="currentPage"
paramId="currentPage">涓嬩竴欏?/span></html:link>
<html:link action="/page.do?pageMethod=last"
paramName="page" paramProperty="currentPage"
paramId="currentPage">灝鵑〉</html:link>
</td>
</tr>
</table>
7 嫻嬭瘯錛?/span>
鎸夌収涓婅堪姝ラ瀹屾垚鍚庯紝鍦ㄦ祻瑙堝櫒涓緭鍏?/span>http://localhost:8080/Fenye/page.do鏌ョ湅欏甸潰銆?/span>
]]>
<%@ page import="java.sql.*,javax.sql.*,javax.naming.*" %>
<html>
<head>
<title>緗戜笂涔﹀簵鐣欒█鏉?lt;/title>
</head>
<body>
<a href="say.html">鎴戣鐣欒█</a><br>
<%
Context ctx=new InitialContext();
DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/bookstore");
Connection conn=ds.getConnection();
//鍒涘緩鍙粴鍔ㄧ殑緇撴灉闆嗐?br />
Statement stmt=conn.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet rs=stmt.executeQuery("select * from guestbook order by gst_time desc");
//縐誨姩娓告爣鍒扮粨鏋滈泦鐨勬渶鍚庝竴琛屻?br />
rs.last();
//寰楀埌褰撳墠琛岀殑琛屾暟錛屼篃灝卞緱鍒頒簡鏁版嵁搴撲腑鐣欒█鐨勬繪暟銆?br />
int rowCount=rs.getRow();
if(rowCount==0)
{
out.println("褰撳墠娌℃湁浠諱綍鐣欒█!");
return;
}
String strCurPage=request.getParameter("page");
//琛ㄧず褰撳墠鐨勯〉鏁般?br />
int curPage;
if(strCurPage==null)
curPage=1;
else
curPage=Integer.parseInt(strCurPage);
//瀹氫箟姣忛〉鏄劇ず鐨勭暀璦鏁般?br />
int countPerPage=5;
//璁＄畻鏄劇ず鎵鏈夌暀璦闇瑕佺殑鎬婚〉鏁般?br />
int pageCount=(rowCount+countPerPage-1)/countPerPage;
//縐誨姩娓告爣鍒扮粨鏋滈泦涓寚瀹氱殑琛屻傚鏋滄樉紺虹殑鏄涓欏碉紝curPage=1錛?br />
//娓告爣縐誨姩鍒扮1琛屻?br />
rs.absolute((curPage-1)*countPerPage+1);
//濡傛灉鏄1欏碉紝鍒欐樉紺轟笉甯﹂摼鎺ョ殑鏂囧瓧錛屽鏋滀笉鏄1欏碉紝
//鍒欑粰鐢ㄦ埛鎻愪緵璺寵漿鍒扮涓欏靛拰涓婁竴欏電殑閾炬帴銆?br />
if(curPage==1)
{
%>
絎竴欏?amp;nbsp;
涓婁竴欏?amp;nbsp;
<%
}
else
{
%>
<a href="index.jsp?page=<%=1%>">絎竴欏?lt;/a>
<a href="index.jsp?page=<%=curPage-1%>">涓婁竴欏?lt;/a>
<%
}
//濡傛灉褰撳墠欏墊槸鏈鍚庝竴欏碉紝鍒欐樉紺轟笉甯﹂摼鎺ョ殑鏂囧瓧錛屽鏋滀笉鏄渶鍚庝竴欏碉紝
//鍒欑粰鐢ㄦ埛鎻愪緵璺寵漿鍒版渶鍚庝竴欏靛拰涓嬩竴欏電殑閾炬帴銆?br />
if(curPage==pageCount)
{
%>
涓嬩竴欏?amp;nbsp;
鏈鍚庨〉
<%
}
else
{
%>
<a href="index.jsp?page=<%=curPage+1%>">涓嬩竴欏?lt;/a>
<a href="index.jsp?page=<%=pageCount%>">鏈鍚庨〉</a>
<%
}
int i=0;
//浠ュ驚鐜殑鏂瑰紡鍙栧嚭姣忛〉瑕佹樉紺虹殑鏁版嵁錛屽洜涓哄湪鍓嶉潰閽堝瑕佹樉紺虹殑欏墊暟錛?br />
//璋冪敤浜唕s.absolute((curPage-1)*countPerPage+1);
//鎵浠ユ槸浠庢父鏍囨墍鍦ㄧ殑浣嶇疆鍙栧嚭褰撳墠欏佃鏄劇ず鐨勬暟鎹?br />
while(i<countPerPage && !rs.isAfterLast())
{
out.println("<hr color=\"blue\" size=\"2\"><br>");
out.println("鐢ㄦ埛鍚嶏細"+rs.getString("gst_user"));
out.println(" ");
Timestamp ts=rs.getTimestamp("gst_time");
long lms=ts.getTime();
Date date=new Date(lms);
Time time=new Time(lms);
out.println("鐣欒█鏃墮棿錛?+date+" "+time);
out.println(" ");
out.println("鐢ㄦ埛IP錛?+rs.getString("gst_ip")+"<br>");
out.println("涓婚錛?+rs.getString("gst_title")+"<br>");
out.println("鍐呭錛?+rs.getString("gst_content"));
i++;
rs.next();
}
rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
]]>