关于使用logic:iterate 整合struts 和hiberante分页的问题

海蓝树 2008-06-30 09:51:58

我有的项目，在使用logic:iterate分页的屏幕就一片空白。

package com.mine.struts.action;





import java.util.List;



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;



import com.mine.server.Service;







public class User_showAction extends Action {



	public ActionForward execute(ActionMapping mapping, ActionForm form,

			HttpServletRequest request, HttpServletResponse response) {

	

		

	

	// 分析当前页码

	String pageString=request.getParameter("page");

	if(pageString == null || pageString.length() == 0) {

	pageString = "1";

	}

	int currentPage= 0 ;

	try {

	currentPage = Integer.parseInt(pageString);// 当前页码

	} catch(Exception e) {}

	if(currentPage == 0) {

	currentPage = 1;

	}

	

	int pageSize = 3;//每页显示的数据数

	// 读取数据

	Service manager = new Service();

	List users = manager.findPagedAll(currentPage, pageSize);

	request.setAttribute("users",users);// 保存用户列表

	request.setAttribute("totalPage",manager.getTotalPage(pageSize));// 保存总页数

	request.setAttribute("totalCount", manager.getTotalCount());//

	//保存记录总数

	request.setAttribute("currentPage", currentPage);// 保存当前页码

	return mapping.findForward("display");

	}

}

JSP页面：

<%@ page language="java" import="com.mine.server.*,java.util.*"

pageEncoding="GBK"%>

<%@ page contentType="text/html;charset=GBK"%>



<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>



<%

String path = request.getContextPath();

String basePath =request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<base href="<%=basePath%>">

<title>用户列表页面</title>

<meta http-equiv="pragma" content="no-cache">

<meta http-equiv="cache-control" content="no-cache">

<meta http-equiv="expires" content="0">

<style>



a:hover {color:red;text-decoration:none}

</style>

</head>

<body><b>用户列表页面</b><br>



<table width="100%" border="0">

 

</table>



<table width="80%" border="1" cellpadding="0"

style="border-collapse: collapse; " bordercolor="#000000">

<tr>

    <td>用户名</td>

    <td>密码</td>

    <td>地址</td>

    <td>电话</td>

    <td>邮箱</td>

    <td>性别</td>

    <td>爱好</td>

    <td>操作</td>

  </tr>



<logic:iterate name="users" id="user">

<tr>

<td>${user.username}</td>

<td>${user.password}</td>

<td>${user.address}</td>

<td>${user.tel}</td>

<td>${user.email}</td>

<td>${user.sex}</td>

<td>${user.enjoy}</td>

<td>${user.content}</td>

<td><a href="edit.html?id=${user.id}">修改</a></td>

</tr>

</logic:iterate>



</table> 共${totalCount}个用户

第${currentPage}页/共${totalPage}页



<c:if test="${currentPage > 1}">

[ <a

href="${pageContext.request.contextPath}/user_show.html?page=${currentPage-1

}">上一页</a> ]

</c:if>



<c:if test="${currentPage <= 1}">

[ 上一页 ]

</c:if>

<c:if test="${currentPage < totalPage}">

[ <a

href="${pageContext.request.contextPath}/user_show.html?page=${currentPage+1

}">下一页</a> ]

</c:if>

<c:if test="${currentPage >= totalPage}">

[ 下一页 ]

</c:if>

<%-- 输出 JavaScript 跳转代码 --%>

<script>

// 页面跳转函数

// 参数: 包含页码的表单元素，例如输入框，下拉框等

function jumpPage(input) {

// 页码相同就不做跳转

if(input.value == ${currentPage}) {

return;

}

var newUrl = "${pageContext.request.contextPath}/user_show.html?page=" +

input.value;

document.location = newUrl;

}

</script>

转到

<!-- 输出 HTML SELECT 元素, 并选中当前页面编码 -->

<select onchange='jumpPage(this);'>

<c:forEach var="i" begin="1" end="${totalPage}">

<option value="${i}"

<c:if test="${currentPage == i}">

selected

</c:if>

>第${i}页</option>

</c:forEach>

</select>

输入页码：<input type="text" value="${currentPage}" id="jumpPageBox"

size="3">

<input type="button" value="跳转"

onclick="jumpPage(document.getElementById('jumpPageBox'))">



</body>

</html>