欢迎参加Struts技术交流与讨论

这是action类
public ActionForward split(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws HibernateException {
SplitForm splitForm = (SplitForm) form;
Student ulist=null;
int page;
Transaction tx;
        if(splitForm.getName()!=null){
        page=1;
         ulist=new Student();
ulist.setName(splitForm.getName());
ulist.setScore(new Float(splitForm.getScore()));
        }
        else{
            page=Integer.parseInt((String)request.getParameter("page"));
         if(page==0)
         page=1;
        }
        QueryInfo qi=new QueryInfo();
     qi.pageSize=3;
     qi.currentPage=page;
     Session session=HibernateUtil.currentSession();
     tx=session.beginTransaction();
     DbOperation db=new DbOperation();
     List list=db.getStudent(session,qi);

     DataForm dataform=new DataForm();
     dataform.setList(list);
     dataform.setNextPage(db.nextPage);
     dataform.setPreviousPage(db.previousPage);
     dataform.setPageCount(qi.pageCount);
     dataform.setNext(qi.currentPage);
     dataform.setPrevious(qi.currentPage);
     request.setAttribute("form",dataform);
tx.commit();
HibernateUtil.closeSession();
        return  mapping.findForward("splitpage");
}

这是Herbinate 处理分页用的数据库查询与处理类public class DbOperation {
public boolean nextPage,previousPage;

public Student getStudent(String id) throws HibernateException{
Session session=HibernateUtil.currentSession();
Student student=getStudent(session,id);
session.close();
return student;
}
public Student getStudent(Session session,String id)throws HibernateException{
Transaction tx=null;
Student student=null;
try{
System.out.println("success in getStudent method");
tx=session.beginTransaction();
Query query=session.createQuery("FROM "+Student.class.getName()+"where id=:id");
query.setParameter("id",id);
List list=query.list();
if(!list.isEmpty()){
student=(Student)list.get(0);

}
tx.commit();

}catch(HibernateException e){
if(tx!=null)
tx.rollback();
throw e;
}
return student;
}

public List getStudent(Session session,QueryInfo qi)throws HibernateException{

String sql="select count(*) from "+Student.class.getName();
qi.rsCount=((Integer)session.iterate(sql).next()).intValue();

if(qi.rsCount==0)
return Collections.EMPTY_LIST;
if(qi.rsCount%qi.pageSize==0)
qi.pageCount=qi.rsCount/qi.pageSize;
else
qi.pageCount=qi.rsCount/qi.pageSize+1;
if(qi.currentPage>1)
previousPage=true;
if(qi.currentPage<qi.pageCount)
nextPage=true;
int start=(qi.currentPage-1)*qi.pageSize;

Transaction tx=null;
List list=null;
try{
tx=session.beginTransaction();

Query q=session.createQuery("from "+Student.class.getName());
q.setFirstResult(start);
q.setMaxResults(qi.pageSize);
list=q.list();
tx.commit();
}catch(HibernateException e){
if(tx!=null)
tx.rollback();
throw e;
}
return list;
}}

将分页的参数写在一个类里，便于扩展和修改
public class QueryInfo {
public int currentPage; //当前页
    public int pageSize;//每页记录数
    public int pageCount;//总页数
    public int rsCount;//总记录数
}下面是配置文件config-struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
   <data-sources />
   <form-beans >
      <form-bean name="splitForm" type="com.split.struts.form.SplitForm" />   </form-beans>   <global-exceptions />
   <global-forwards >
      <forward name="splitpage" path="/form/split.jsp" />   </global-forwards>   <action-mappings >
      <action
         attribute="splitForm"
         input="/form/input.jsp"
         name="splitForm"
         path="/split"
         scope="request"
         parameter="method"
         type="com.split.struts.action.SplitAction" />      <action
       path="/splitforward"
       parameter="/form/input.jsp"
       scope="request"
       type="org.apache.struts.acitons.ForwardAction"
       />
   </action-mappings>

   <message-resources parameter="com.split.struts.ApplicationResources" />
</struts-config>

下面是分页的两个jsp文件，
用来添加数据的表单文件<%@ page language="java" contentType="text/html;charset=gb2312"%><%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-tiles" prefix="tiles" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-template" prefix="template" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-nested" prefix="nested" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html locale="true">
  <head>
    <html:base />

    <title>input.jsp</title>

    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
  </head>

  <body>
     <CENTER>
        <html:form action="/split?method=split" method="post">
        <TABLE border=1 width=300 cellspacing=3 cellpadding=0 bgcolor="#cccccc">
           <TR bgcolor="#9999CC">
              <TD colspan=2><div align=center><FONT color="blue">请输入学生姓名和分数</font></div></TD>
           </TR>
           <TR>
              <TD align=right bgcolor="#9999CC">姓名：</TD><TD align=left bgcolor="#ffffff"><html:text property="name"/></TD>
           </TR>
            <TR>
              <TD align=right bgcolor="#9999CC">分数：</TD><TD align=left bgcolor="#ffffff"><html:text property="score"/></TD>
           </TR>
            <TR bgcolor="#ffffff">
              <TD colspan=2><div align=center><html:submit value="提交"/><html:cancel value="取消"/></div></TD>
           </TR>
        </TABLE>
        </html:form>
     </CENTER>
  </body>
</html:html>一个用来分页显示的文件
<%@ page language="java" contentType="text/html;charset=gb2312"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic"%>
<%@page import="com.split.struts.form.*"%>
<%@page import="com.split.struts.Hibernate.*"%>
<%@page import="java.util.*"%>

<html>
<head>
<title>学生信息系统</title>
</head>
<body>
    <CENTER>
<TABLE border=1 width=300 cellspacing=3 cellpadding=0 bgcolor="#cccccc">
  <TR bgcolor="#9999CC">
              <TD colspan=2><div align=center><FONT color="blue">学生信息</font></div></TD>
           </TR>
            <TR  bgcolor="#ffffff">
              <TD align=right width=50%>姓名</TD><TD align=left bgcolor="#ffffff">分数</TD>
           </TR>
           <logic:present name="form" scope="request">
                 <logic:iterate name="form" property="list" id="element">
                   <TR bgcolor="#ffffff">
                    <TD><bean:write name="element" property="name"/></TD><TD> <bean:write name="element" property="score"/></TD>
                     </tr>
                 </logic:iterate>
           </logic:present>
            <TR bgcolor="#ffffff">
              <TD colspan=2 align=right>
                   <a href="/splitpage/split.do?method=split&page=1">first</a>
                      <logic:equal name="form" property="previousPage" value="true">
                      <a href="/splitpage/split.do?method=split&page=<bean:write name="form" property="previous"/>">previous</a>
                      </logic:equal>
                      <logic:equal name="form" property="nextPage" value="true">
                          <a href="/splitpage/split.do?method=split&page=<bean:write name="form" property="next"/>">next</a>
                      </logic:equal>
                    <a href="/splitpage/split.do?method=split&page=<bean:write name="form" property="pageCount"/>">last</a>
              </TD>
           </TR>
           <TR>
             <TD colspan=2 align=center><html:link action="/splitforward">Return To Add Page</html:link></TD>
           </TR>
        </TABLE>
        </CENTER>
</body>
</html>

希望大家来顶了，我会不断地加一些新的东西进来，包括struts的基本知识，同时也希望大家能参与哦

调试易

欢迎参加Struts技术交流与讨论

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