ReadAction public class ReadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
***其中怎么写***
过程怎么请详细
}
}==================================================================================
ReadFormpackage struts.form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class ReadForm extends ActionForm {
private String content;
private String time;
private String email;
private String item;
private String name;
private String url;
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
return null;
}
public void reset(ActionMapping mapping, HttpServletRequest request) {
} public String getContent() {
return content;
} public void setContent(String content) {
this.content = content;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getEmail() {
return email;
} public void setEmail(String email) {
this.email = email;
}
public String getItem() {
return item;
}
public void setItem(String item) {
this.item = item;
}
public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public String getUrl() {
return url;
} public void setUrl(String url) {
this.url = url;
}
}
===================================================================================
jsp页面怎么写??可以把数据库中的数据显示出来
我知道虽然这样直接问有点过火,但是我实在是没有办法了,那位路过的大侠,帮帮忙
解决方案 »
- 为什么结果都是false,求解!!!
- div 加滚动条 滚动的时候页面卡的很是怎么回事?
- servlet响应的打印
- 求知识,有没有什么方法能获得ActionForm中get方法个数的??
- 如何在JSF内实现页面部分刷新?
- 用SSH如何实现上传,下载?
- socket问题,关于DataInputStream转成byte[]
- spring 整合hibernate 如何重置BeanFactory
- 求一函数:abcdefg字符串中从第3个位置开始,长度为4的字符串。即为cdef
- java中类似C的write方法,有没有!!
- Jsp/WEB.高手进来,十万火急,在线等待~~~!
- 如何实现jquery的jqgrid导出excel表格的案例(java)
try {
ps = con.prepareStatement(sql);
ps.setString(1, userName);
rs = ps.executeQuery(); while (rs.next()) {
LoginInfo loginInfo = new LoginInfo();
loginInfo.setId(rs.getInt("id"));
loginInfo.setName(rs.getString("name"));
loginInfo.setPwd(rs.getString("pwd"));
list.add(loginInfo);
} } catch (SQLException e) {
e.printStackTrace();
} finally {
try { ConnectionManager.closeRs(rs);
ConnectionManager.closePs(ps);
ConnectionManager.closeCn(con); } catch (SQLException e) {
e.printStackTrace();
} } return list; }Action 类 /**
* 登录方法
*/
public ActionForward login(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) { LoginForm checkform = (LoginForm) form;
UserInfoService userInfoService = new UserInfoService();
LoginInfo loginInfo = new LoginInfo();
loginInfo = checkform.getLoginInfo(); boolean bool = userInfoService.Login(loginInfo); if (bool) {
request.setAttribute("loginInfo", loginInfo);
return new ActionForward("/ok.jsp");
} else { return new ActionForward("/Error.jsp");
}
}
//通过用户名获取该用户的充值记录条数
public int getAllLogNumByCn(String cn)throws Exception{
Criteria criteria = getCriteria();
if(cn!=null)
criteria.add(Expression.eq("cn", cn));
criteria.setProjection(Projections.rowCount());
return ((Number)criteria.uniqueResult()).intValue();
} //通过用户名获取该用户的充值记录信息
@SuppressWarnings("unchecked")
public List getAllByCn(String cn) throws Exception{
Criteria criteria = getCriteria();
if(cn!=null)criteria.add(Expression.eq("cn", cn)); return criteria.list();
}
//共用的方法
private Criteria getCriteria(){
return this.getSession(true).createCriteria(RechargeLog.class);//RechargeLog为实体 与 数据库 表对应部分action 代码
List allLogs = null;
int allCounts = 0;
int allpage = 0; try {
allLogs = mems.getAllByCn(cn);
allCounts = mems.getAllLogNumByCn(cn);
request.setAttribute("allLogs", allLogs); request.setAttribute("allCounts", allCounts); return mapping.findForward("query_ok");
} catch (RuntimeException e) {
return mapping.findForward("error");
}
}
在Action;里面存 然后去 JSP页面取数据JSP页面 int allCounts = (Integer) request.getAttribute("allCounts");
List allLogs = (List) request.getAttribute("allLogs");显示:
<table width="903" height="182" border="0">
<tr>
<td height="37" colspan="8">
<div align="center"></div>
<div align="center">
<B><FONT size=6> <bean:message key="rechargeLog.title"/></FONT> </B>
</div>
</td>
</tr>
<tr>
<td width="139" height="39">
<div align="center" class="STYLE4">
<bean:message key="user.recharge.cn"/>
</div>
</td>
<td width="99">
<div align="center" class="STYLE4">
<bean:message key="user.recharge.cardid"/>
</div>
</td>
<td width="126">
<div align="center" class="STYLE4">
<bean:message key="rechargeLog.date"/>
</div>
</td>
<td width="122">
<div align="center" class="STYLE4">
<bean:message key="rechargeLog.ip"/>
</div>
</td>
<td width="109">
<div align="center" class="STYLE4">
<bean:message key="rechargeLog.point"/>
</div>
</td>
<td width="91">
<div align="center" class="STYLE4">
<div align="center">
<bean:message key="rechargeLog.presentPoint"/>
</div>
</div>
</td>
<td width="91">
<div align="center" class="STYLE4">
<div align="center">
<bean:message key="rechargeLog.jxsName"/>
</div>
</div>
</td>
</tr>
<%
EsalseDealerInfo jxsInfo = null;
String jxsrealName = null;
for(int i=0;i<allLogs.size();i++){
RechargeLog log = (RechargeLog)allLogs.get(i);
String cn = log.getCn();
Long cardNo = log.getCardNo();
String cardNos = cardNo+"";
String cardN1 = cardNos.substring(0,4);
String cardN2 = cardNos.substring(8,10);
Date date = log.getChargeDate();
String ip = log.getIp();
Double point = log.getPoint();
Double p_point = log.getPresentPoint();
Long jxsId = log.getDealerId();
if(jxsId!=0){
jxsInfo = (EsalseDealerInfo)jxss.load(jxsId);
jxsrealName = jxsInfo.getRealName();
}else{
jxsrealName = "";
}
%>
<tr>
<td height="36">
<div align="center">
<%=cn %>
</div>
</td>
<td>
<div align="center">
<%=cardN1 %>****<%=cardN2 %>
</div>
</td>
<td>
<div align="center">
<fmt:formatDate value="<%=date %>"/>
</div>
</td>
<td>
<div align="center">
<%=ip %>
</div>
</td>
<td>
<div align="center">
<%=point %>
</div>
</td>
<td>
<div align="center">
<%=p_point %>
</div>
</td>
<td>
<div align="center">
<%=jxsrealName %>
</div>
</td>
</tr>
<%
}
%>
<tr>
<td colspan="6">
<center>
<f:fenye className="doUser" para="opers" functionName="getAll" pageNum="<%=pageNum%>" totalPage="<%=allpage %>" /></center>
</td> </tr>
</table>当然这里你也可以用 foreach 循环
首先构造你的业务逻辑类
比如:Services s=new Services();
List<XXX> list=s.getXXXAll();//这就是一个从业务逻辑类中查询数据内容。至于
request.setAttribute("list",list);
reutnr mapping.findForward("showList");//知道和配置文件的对应关系吧?页面:
<table>
<c:forEach item="${list}" var="item">
<tr><td>
${item.属性}
</td>
</tr>
</table>
至于getXXXAll();内容是什么就是hibernate简单的读取操作。
public class ReadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
Session session=HibernateSessionFactory.getSession();
Query q=session.createQuery("from Mess");
List list=q.list();
request.setAttribute("display.list", list);
HibernateSessionFactory.closeSession();
return mapping.findForward("display");
}
}display.jsp页面<%@ page language="java" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<head>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>留言本</title>
<link rel="stylesheet" type="text/css" href="css/css.css">
</head><body>
<p><table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="80%" id="AutoNumber3">
<tr>
<td width="140" valign="top" align=center>
</td>
<td><img border="0" src="images/guestbook.jpg"><p style="margin: 0 20">
</td>
</tr>
</table> <c:forEach items="${requestScope['display.list']}" var="article">
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="80%" id="AutoNumber3">
<tr>
<td width="140" valign="top">
</td>
<td>
<br>
<div align="center">
<center>
<table style="word-break:break-all" border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#3F8805" width="90%" id="AutoNumber4">
<tr>
<td height="20" bgcolor="#eefee0" width="75%"> <img src="images/gb-index2.gif" align="absmiddle""> <c:out value="${name}"/> <font color="#3F8805"><c:out value="${time}"/>说</font> <c:out value="${item}"/></td>
<td height="20" bgcolor="#eefee0" width="25%">
<p align="right" style="margin-right: 10">
<a href=mailto:<c:out value="${email}"/>><img border='0' alt='信箱 <c:out value="${email}"/>' src=images/gb-mail.gif align='absmiddle'></a>
<a href="<c:out value="${url}"/>">
<img border='0' src=images/gb-url.gif align='absmiddle'>
</a>
</td>
</tr>
<tr>
<td colspan="2" height="120" style="WORD-WRAP: break-word">
<p style="line-height: 140%; margin-left: 15; margin-right: 10; margin-top: 10; margin-bottom: 5" align=left><c:out value="${content}"/>
</p>
</td>
</tr>
</table>
</center>
</div> </td> </tr> </table>
</c:forEach>
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="80%" id="AutoNumber5">
<tr>
<td width="140" valign="top"> </td>
<td> <br> <div align="center">
<center>
<table border="1" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#3F8805" width="90%" id="AutoNumber6">
<tr>
<td colspan="2" height="50">
</td>
</tr>
</table>
</center>
</div></td>
</tr>
</table> </body></html>jsp页面中无法显示数据,想问一下错在哪里,怎么改,最好能说清楚点,谢谢啦!
<s:property value="name"/><br/>
</s:iterator>