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這篇文章將為大家詳細講解有關SSH如何實現條件查詢和分頁查詢，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。
1、QueryHelper和PageResult
QueryHelper是進行HQL查詢的輔助類，而PageResult則是進行分頁查詢的結果類。
QueryHelper.java
package com.rk.core.utils;
import java.util.ArrayList;
import java.util.List;
public class QueryHelper {
//from子句
private String fromClause = "";
//where子句
private String whereClause = "";
//order by子句
private String orderByClause = "";
private List<Object> parameters;
//排序順序
public static String ORDER_BY_DESC = "DESC";//降序
public static String ORDER_BY_ASC = "ASC";//升序
/**
* 構造from子句
* @param clazz 實體類
* @param alias 實體類對應的別名
*/
public QueryHelper(Class clazz,String alias){
fromClause = "FROM " + clazz.getSimpleName() + " " + alias;
}
/**
* 構造where子句
* @param condition 查詢條件語句；例如：i.title like ?
* @param params 查詢條件語句中對應的查詢條件值；例如：%標題%
*/
public void addCondition(String condition, Object... params){
if(whereClause.length() > 1){ //非第一個查詢條件
whereClause += " AND " + condition;
}
else{//第一個查詢條件
whereClause += " WHERE " + condition;
}
//設置 查詢條件值 到 查詢條件值集合 中
if(parameters == null){
parameters = new ArrayList<Object>();
}
if(params != null){
for(Object param : params){
parameters.add(param);
}
}
}
/**
* 構造order by子句
* @param property 排序屬性；例如：i.createTime
* @param order 排序順序；例如：DESC 或者 ASC
*/
public void addOrderByProperty(String property, String order){
if(orderByClause.length()>1){ //非第一個排序屬性
orderByClause += ", " + property + " " + order;
}
else{ //第一個排序屬性
orderByClause = " ORDER BY " + property + " " + order;
}
}
//查詢hql語句
public String getQueryListHql(){
return fromClause + whereClause + orderByClause;
}
//查詢統計數的hql語句
public String getQueryCountHql(){
return "SELECT COUNT(*) " + fromClause + whereClause;
}
//查詢hql語句中對應的查詢條件值集合
public List<Object> getParameters(){
return parameters;
}
}QueryHelper分析：由3部分組成
（1）from子句
（2）where子句
（3）order by子句
PageResult.java
package com.rk.core.entity;
import java.util.ArrayList;
import java.util.List;
public class PageResult {
//總記錄數
private long totalCount;
//當前頁號
private int pageNo;
//總頁數
private int totalPageCount;
//頁大小
private int pageSize;
//列表記錄
private List items;
//避免分頁過大或過小
public static final int MAX_PAGE_SIZE = 100;
public static final int MIN_PAGE_SIZE = 3;
public PageResult(long totalCount, int totalPageCount,int pageSize, int pageNo, List items) {
this.totalCount = totalCount;
this.totalPageCount = totalPageCount;
this.pageSize = pageSize;
this.pageNo = pageNo;
this.items = items;
}
public long getTotalCount() {
return totalCount;
}
public void setTotalCount(long totalCount) {
this.totalCount = totalCount;
}
public int getPageNo() {
return pageNo;
}
public void setPageNo(int pageNo) {
this.pageNo = pageNo;
}
public int getTotalPageCount() {
return totalPageCount;
}
public void setTotalPageCount(int totalPageCount) {
this.totalPageCount = totalPageCount;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public List getItems() {
return items;
}
public void setItems(List items) {
this.items = items;
}
}對于PageResult的分析：
（1）總記錄數totalCount (根據sql語句從數據庫獲得)
（2）每一頁的大小pageSize （一般由前臺指定）
（3）由（1）和（2）得出總的頁數totalPageCount （計算得出）
（4）判斷當前頁pageNo是否合理（是否小于1，是否大于totalPageCount）；如果不合理，則進行校正
（5）取出當前頁的數據items
2、使用QueryHelper
使用QueryHelper主要集中在dao層面上進行實現，而service層只是調用下一層(dao層)的功能。
2.1、Dao層
BaseDao.java
package com.rk.core.dao;
import java.io.Serializable;
import java.util.List;
import com.rk.core.entity.PageResult;
import com.rk.core.utils.QueryHelper;
public interface BaseDao<T> {
//新增
void save(T entity);
//更新
void update(T entity);
//根據id刪除
void delete(Serializable id);
//根據id查找
T findById(Serializable id);
//查找列表
List<T> findAll();
//條件查詢實體列表
List<T> findList(String hql, List<Object> parameters);
//條件查詢實體列表--查詢助手queryHelper
List<T> findList(QueryHelper queryHelper);
//分頁條件查詢實體列表--查詢助手queryHelper
PageResult getPageResult(QueryHelper queryHelper, int pageNo, int pageSize);
}其中添加的方法有
//條件查詢實體列表 List<T> findList(String hql, List<Object> parameters); //條件查詢實體列表--查詢助手queryHelper List<T> findList(QueryHelper queryHelper); //分頁條件查詢實體列表--查詢助手queryHelper PageResult getPageResult(QueryHelper queryHelper, int pageNo, int pageSize);
BaseDaoImpl.java
package com.rk.core.dao.impl;
import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import com.rk.core.dao.BaseDao;
import com.rk.core.entity.PageResult;
import com.rk.core.utils.HibernateConfigurationUtils;
import com.rk.core.utils.QueryHelper;
public class BaseDaoImpl<T> extends HibernateDaoSupport implements BaseDao<T> {
private Class<T> clazz;
@SuppressWarnings("unchecked")
public BaseDaoImpl() {
ParameterizedType pt = (ParameterizedType) this.getClass().getGenericSuperclass();
Type[] args = pt.getActualTypeArguments();
this.clazz = (Class<T>) args[0];
}
public void save(T entity) {
getHibernateTemplate().save(entity);
}
public void update(T entity) {
getHibernateTemplate().update(entity);
}
public void delete(Serializable id) {
String identifierPropertyName = HibernateConfigurationUtils.getIdentifierPropertyName(clazz);
Session session = getSession();
session.createQuery("delete from " + clazz.getSimpleName() + " where " + identifierPropertyName + "=?")
.setParameter(0, id).executeUpdate();
}
public T findById(Serializable id) {
return getHibernateTemplate().get(clazz, id);
}
@SuppressWarnings("unchecked")
public List<T> findAll() {
Session session = getSession();
Query query = session.createQuery("from " + clazz.getSimpleName());
return query.list();
}
public List<T> findList(String hql, List<Object> parameters) {
Query query = getSession().createQuery(hql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
return query.list();
}
public List<T> findList(QueryHelper queryHelper) {
Query query = getSession().createQuery(queryHelper.getQueryListHql());
List<Object> parameters = queryHelper.getParameters();
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
return query.list();
}
public PageResult getPageResult(QueryHelper queryHelper, int pageNo,int pageSize) {
//1、準備hql語句和參數
String hql = queryHelper.getQueryListHql();
String countHql = queryHelper.getQueryCountHql();
List<Object> parameters = queryHelper.getParameters();
//2、獲取總的數據記錄數
Query queryCount = getSession().createQuery(countHql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
queryCount.setParameter(i, parameters.get(i));
}
}
long totalCount = (Long) queryCount.uniqueResult();
//3、對頁的大小進行約束
if(pageSize < PageResult.MIN_PAGE_SIZE) pageSize = PageResult.MIN_PAGE_SIZE;
if(pageSize > PageResult.MAX_PAGE_SIZE) pageSize = PageResult.MAX_PAGE_SIZE;
//4、求解總頁數
int quotient = (int) (totalCount / pageSize);
int remainder = (int) (totalCount % pageSize);
int totalPageCount = remainder==0?quotient:(quotient+1);
//5、對當前頁進行約束
if(pageNo < 1) pageNo = 1;
if(pageNo > totalPageCount) pageNo = totalPageCount;
//6、查詢當前頁的數據
Query query = getSession().createQuery(hql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
query.setFirstResult((pageNo-1)*pageSize);//設置數據起始索引號
query.setMaxResults(pageSize);
List list= query.list();
//7、返回分頁數據
return new PageResult(totalCount,totalPageCount,pageSize,pageNo,list);
}
}其中添加的方法有：
public List<T> findList(String hql, List<Object> parameters) {
Query query = getSession().createQuery(hql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
return query.list();
}
public List<T> findList(QueryHelper queryHelper) {
Query query = getSession().createQuery(queryHelper.getQueryListHql());
List<Object> parameters = queryHelper.getParameters();
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
return query.list();
}
public PageResult getPageResult(QueryHelper queryHelper, int pageNo,int pageSize) {
//1、準備hql語句和參數
String hql = queryHelper.getQueryListHql();
String countHql = queryHelper.getQueryCountHql();
List<Object> parameters = queryHelper.getParameters();
//2、獲取總的數據記錄數
Query queryCount = getSession().createQuery(countHql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
queryCount.setParameter(i, parameters.get(i));
}
}
long totalCount = (Long) queryCount.uniqueResult();
//3、對頁的大小進行約束
if(pageSize < PageResult.MIN_PAGE_SIZE) pageSize = PageResult.MIN_PAGE_SIZE;
if(pageSize > PageResult.MAX_PAGE_SIZE) pageSize = PageResult.MAX_PAGE_SIZE;
//4、求解總頁數
int quotient = (int) (totalCount / pageSize);
int remainder = (int) (totalCount % pageSize);
int totalPageCount = remainder==0?quotient:(quotient+1);
//5、對當前頁進行約束
if(pageNo < 1) pageNo = 1;
if(pageNo > totalPageCount) pageNo = totalPageCount;
//6、查詢當前頁的數據
Query query = getSession().createQuery(hql);
if(parameters != null){
for(int i=0;i<parameters.size();i++){
query.setParameter(i, parameters.get(i));
}
}
query.setFirstResult((pageNo-1)*pageSize);//設置數據起始索引號
query.setMaxResults(pageSize);
List list= query.list();
//7、返回分頁數據
return new PageResult(totalCount,totalPageCount,pageSize,pageNo,list);
}2.2、Action層
BaseAction.java
package com.rk.core.action;
import com.opensymphony.xwork2.ActionSupport;
import com.rk.core.entity.PageResult;
public abstract class BaseAction extends ActionSupport {
protected String[] selectedRow;
protected PageResult pageResult;
protected int pageNo;
protected int pageSize;
protected String searchContent;
public String[] getSelectedRow() {
return selectedRow;
}
public void setSelectedRow(String[] selectedRow) {
this.selectedRow = selectedRow;
}
public PageResult getPageResult() {
return pageResult;
}
public void setPageResult(PageResult pageResult) {
this.pageResult = pageResult;
}
public int getPageNo() {
return pageNo;
}
public void setPageNo(int pageNo) {
this.pageNo = pageNo;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public String getSearchContent() {
return searchContent;
}
public void setSearchContent(String searchContent) {
this.searchContent = searchContent;
}
}其中對查詢條件支持的字段有：
protected String searchContent;
其中對分頁查詢支持的字段有：
protected PageResult pageResult; protected int pageNo; protected int pageSize;
InfoAction.java 主要關注listUI()方法，其它方法只是為了參考和理解
//列表頁面
public String listUI(){
//加載分類集合
ActionContext.getContext().getContextMap().put("infoTypeMap", Info.INFO_TYPE_MAP);
//分頁數據查詢
QueryHelper queryHelper = new QueryHelper(Info.class, "i");
try {
if(StringUtils.isNotBlank(searchContent)){
searchContent = URLDecoder.decode(searchContent, "UTF-8");
queryHelper.addCondition("i.title like ?", "%"+searchContent+"%");
}
} catch (Exception e) {
e.printStackTrace();
}
queryHelper.addOrderByProperty("i.createTime", QueryHelper.ORDER_BY_DESC);
String hql = queryHelper.getQueryListHql();
pageResult = infoService.getPageResult(queryHelper, pageNo, pageSize);
return "listUI";
}
//跳轉到新增頁面
public String addUI(){
//加載分類集合
ActionContext.getContext().getContextMap().put("infoTypeMap", Info.INFO_TYPE_MAP);
info = new Info();
info.setCreateTime(new Timestamp(new Date().getTime())); // 是為了在頁面中顯示出當前時間
return "addUI";
}
//保存新增
public String add(){
if(info != null){
infoService.save(info);
}
return "list";
}
//跳轉到編輯頁面
public String editUI(){
//加載分類集合
ActionContext.getContext().getContextMap().put("infoTypeMap", Info.INFO_TYPE_MAP);
if(info != null && info.getInfoId() != null){
info = infoService.findById(info.getInfoId());
}
return "editUI";
}
//保存編輯
public String edit(){
if(info != null){
infoService.update(info);
}
return "list";
}
//刪除
public String delete(){
if(info != null && info.getInfoId() != null){
infoService.delete(info.getInfoId());
}
return "list";
}
//批量刪除
public String deleteSelected(){
if(selectedRow != null){
for(String id : selectedRow){
infoService.delete(id);
}
}
return "list";
}其中，searchContent/pageNo/pageSize/pageResult變量繼承自父類（BaseAction）。
除了實現條件查詢（分頁查詢）之外，還要在進行“刪除和編輯”操作時，需要記錄“查詢關鍵字”、“頁碼”。而新增操作，則不需要記住原來的“查詢關鍵字”和“頁碼”，因為我們進行添加操作后，想看到的就是自己新添加的對象，而不是原來查詢條件下記錄。
在struts-tax.xml中，action是進行如下映射的：
<!-- InfoAction -->
<action name="info_*" class="infoAction" method="{1}">
<result name="{1}">/WEB-INF/jsp/tax/info/{1}.jsp</result>
<result name="list" type="redirectAction">
<param name="actionName">info_listUI</param>
<param name="searchContent">${searchContent}</param>
<param name="pageNo">${pageNo}</param>
<param name="encode">true</param>
</result>
</action>此處對searchContent內容進行Url encode的轉換，因為在listUI()方法代碼中，
searchContent = URLDecoder.decode(searchContent, "UTF-8");
對于URLEncoder和URLDecoder的一個小測試 @Test
public void test() throws Exception{
String str = "中國";
String strEncode = URLEncoder.encode(str,"utf-8");
String strDecode = URLDecoder.decode(strEncode, "utf-8");
String strDecode2 = URLDecoder.decode(str, "utf-8");
System.out.println(str);
System.out.println(strEncode);
System.out.println(strDecode);
System.out.println(strDecode2);
}輸出 中國 %E4%B8%AD%E5%9B%BD 中國 中國 UrlEncoder的源碼 public class URLDecoder {
// The platform default encoding
static String dfltEncName = URLEncoder.dfltEncName;
/**
* Decodes a <code>application/x-www-form-urlencoded</code> string using a specific
* encoding scheme.
*
* The supplied encoding is used to determine what characters
* are represented by any consecutive sequences of the form "%xy".
*
*
* Note: The World Wide Web Consortium Recommendation states that
* UTF-8 should be used. Not doing so may introduce incompatibilites.
*
*
* @param s the <code>String</code> to decode
* @param enc The name of a supported character encoding
* @return the newly decoded <code>String</code>
*/
public static String decode(String s, String enc)
throws UnsupportedEncodingException{
boolean needToChange = false;
int numChars = s.length();
StringBuffer sb = new StringBuffer(numChars > 500 ? numChars / 2 : numChars);
int i = 0;
if (enc.length() == 0) {
throw new UnsupportedEncodingException ("URLDecoder: empty string enc parameter");
}
char c;
byte[] bytes = null;
while (i < numChars) {
c = s.charAt(i);
switch (c) {
case '+':
sb.append(' ');
i++;
needToChange = true;
break;
case '%':
/*
* Starting with this instance of %, process all
* consecutive substrings of the form %xy. Each
* substring %xy will yield a byte. Convert all
* consecutive bytes obtained this way to whatever
* character(s) they represent in the provided
* encoding.
*/
try {
// (numChars-i)/3 is an upper bound for the number
// of remaining bytes
if (bytes == null)
bytes = new byte[(numChars-i)/3];
int pos = 0;
while ( ((i+2) < numChars) &&
(c=='%')) {
int v = Integer.parseInt(s.substring(i+1,i+3),16);
if (v < 0)
throw new IllegalArgumentException("URLDecoder: Illegal hex characters in escape (%) pattern - negative value");
bytes[pos++] = (byte) v;
i+= 3;
if (i < numChars)
c = s.charAt(i);
}
// A trailing, incomplete byte encoding such as
// "%x" will cause an exception to be thrown
if ((i < numChars) && (c=='%'))
throw new IllegalArgumentException(
"URLDecoder: Incomplete trailing escape (%) pattern");
sb.append(new String(bytes, 0, pos, enc));
} catch (NumberFormatException e) {
throw new IllegalArgumentException(
"URLDecoder: Illegal hex characters in escape (%) pattern - "
+ e.getMessage());
}
needToChange = true;
break;
default:
sb.append(c);
i++;
break;
}
}
return (needToChange? sb.toString() : s);
}
} |
3、JSP頁面
3.1、pageNavigator.jsp
在WebRoot/common目錄下
<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s" %>
<div class="c_pate" >
<s:if test="pageResult.totalCount > 0">
<table width="100%" class="pageDown" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="right">
總共<s:property value="pageResult.totalCount"/>條記錄，
當前第 <s:property value="pageResult.pageNo"/> 頁，
共<s:property value="pageResult.totalPageCount"/> 頁
<s:if test="pageResult.pageNo > 1">
<a href="javascript:doGoPage(<s:property value="pageResult.pageNo-1"/>)">上一頁</a>
</s:if>
<s:else>
<a href="javascript:;">上一頁</a>
</s:else>
<s:if test="pageResult.pageNo < pageResult.totalPageCount">
<a href="javascript:doGoPage(<s:property value="pageResult.pageNo+1"/>)">下一頁</a>
</s:if>
<s:else>
<a href="javascript:;">下一頁</a>
</s:else>
到 <input id="pageNo" name="pageNo" type="text" onkeypress="if(event.keyCode == 13){doGoPage(this.value);}" min="1"
max="<s:property value="pageResult.totalPageCount"/>" value="<s:property value="pageResult.pageNo"/>" />
</td>
</tr>
</table>
</s:if>
<s:else>
暫無數據！
</s:else>
</div>
<script type="text/javascript">
//翻頁
function doGoPage(pageNum){
document.getElementById("pageNo").value = pageNum;
document.forms[0].action = list_url;
document.forms[0].submit();
}
//搜索
function doSearch(){
//重置頁號
$('#pageNo').val(1);
document.forms[0].action = list_url;
document.forms[0].submit();
}
</script>注意：在這最后一段Javascript中引用了一個list_url變量，它需要在主頁面（listUI.jsp）內提供它的值。
3.2、listUI.jsp
<%@page import="org.apache.struts2.components.Include"%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<%@include file="/common/header.jsp"%>
<title>信息發布管理</title>
<script type="text/javascript">
//全選、全反選
function doSelectAll(){
// jquery 1.6 前
//$("input[name=selectedRow]").attr("checked", $("#selAll").is(":checked"));
//prop jquery 1.6+建議使用
$("input[name=selectedRow]").prop("checked", $("#selAll").is(":checked"));
}
//新增
function doAdd(){
document.forms[0].action = "${basePath}/tax/info_addUI.action";
document.forms[0].submit();
}
//編輯
function doEdit(id){
document.forms[0].action = "${basePath}/tax/info_editUI.action?info.infoId="+id;
document.forms[0].submit();
}
//刪除
function doDelete(id){
document.forms[0].action = "${basePath}/tax/info_delete.action?info.infoId="+id;
document.forms[0].submit();
}
//批量刪除
function doDeleteAll(){
document.forms[0].action = "${basePath}/tax/info_deleteSelected.action";
document.forms[0].submit();
}
//異步發布信息,信息的id及將要改成的信息狀態
function doPublic(infoId, state){
//1、更新信息狀態
$.ajax({
url:"${basePath}/tax/info_publicInfo.action",
data:{"info.infoId":infoId,"info.state":state},
type:"post",
success:function(msg){
//2、更新狀態欄、操作攔的顯示值
if("更新狀態成功" == msg){
if(state == 1){//說明信息狀態已經被改成 發布，狀態欄顯示 發布，操作欄顯示 停用
$('#show_'+infoId).html("發布");
$('#oper_'+infoId).html('<a href="javascript:doPublic(\''+infoId+'\',0)">停用</a>');
}
else{
$('#show_'+infoId).html("停用");
$('#oper_'+infoId).html('<a href="javascript:doPublic(\''+infoId+'\',1)">發布</a>');
}
}
else{
alert("更新信息狀態失敗！");
}
},
error:function(){
alert("更新信息狀態失敗！");
}
});
}
var list_url = "${basePath}/tax/info_listUI.action";
</script>
</head>
<body class="rightBody">
<form name="form1" action="" method="post">
<div class="p_d_1">
<div class="p_d_1_1">
<div class="content_info">
<div class="c_crumbs"><div><b></b><strong>信息發布管理</strong></div> </div>
<div class="search_art">
<li>
信息標題：<s:textfield name="searchContent" cssClass="s_text" id="searchContent" cssStyle="width:160px;"/>
</li>
<li><input type="button" class="s_button" value="搜 索" onclick="doSearch()"/></li>
<li >
<input type="button" value="新增" class="s_button" onclick="doAdd()"/>
<input type="button" value="刪除" class="s_button" onclick="doDeleteAll()"/>
</li>
</div>
<div class="t_list" >
<table width="100%" border="0">
<tr class="t_tit">
<td width="30" align="center"><input type="checkbox" id="selAll" onclick="doSelectAll()" /></td>
<td align="center">信息標題</td>
<td width="120" align="center">信息分類</td>
<td width="120" align="center">創建人</td>
<td width="140" align="center">創建時間</td>
<td width="80" align="center">狀態</td>
<td width="120" align="center">操作</td>
</tr>
<s:iterator value="pageResult.items" status="st">
<tr <s:if test="#st.odd"> bgcolor="f8f8f8" </s:if> >
<td align="center"><input type="checkbox" name="selectedRow" value="<s:property value='infoId'/>"/></td>
<td align="center"><s:property value="title"/></td>
<td align="center">
<s:property value="#infoTypeMap[type]"/>
</td>
<td align="center"><s:property value="creator"/></td>
<td align="center"><s:date name="createTime" format="yyyy-MM-dd HH:mm"/></td>
<td id="show_<s:property value='infoId'/>" align="center"><s:property value="state==1?'發布':'停用'"/></td>
<td align="center">
<span id="oper_<s:property value="infoId"/>">
<s:if test="state==1">
<a href="javascript:doPublic('<s:property value="infoId" />',0)">停用</a>
</s:if>
<s:else>
<a href="javascript:doPublic('<s:property value="infoId"/>',1)">發布</a>
</s:else>
</span>
<a href="javascript:doEdit('<s:property value='infoId'/>')">編輯</a>
<a href="javascript:doDelete('<s:property value='infoId'/>')">刪除</a>
</td>
</tr>
</s:iterator>
</table>
</div>
</div>
<%@include file="/common/pageNavigator.jsp" %>
</div>
</div>
</form>
</body>
</html>知識點（1）：在點擊搜索的時候，要將頁碼設置為1
function doSearch(){
//重置頁號
$('#pageNo').val(1);
document.forms[0].action = list_url;
document.forms[0].submit();
}知識點（2）：現在獲取的顯示數據不再是List對象，而是PageResult對象
<s:iterator value="pageResult.items" status="st">
知識點（3）：為了引入通用的pageNavigator.jsp，需要定義一個list_url變量
var list_url = "${basePath}/tax/info_listUI.action";引入頁面
<%@include file="/common/pageNavigator.jsp" %>
3.3、editUI.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<%@include file="/common/header.jsp"%>
<title>信息發布管理</title>
<script type="text/javascript" src="${basePath}/js/ueditor/ueditor.config.js"></script>
<script type="text/javascript" src="${basePath}/js/ueditor/ueditor.all.js"></script>
<script type="text/javascript" src="${basePath}/js/ueditor/lang/zh-cn/zh-cn.js"></script>
<script>
window.UEDITOR_HOME_URL = "${basePath}/js/ueditor";
window.onload = function(){
var ue = UE.getEditor("editor");
}
</script>
</head>
<body class="rightBody">
<form id="form" name="form" action="${basePath}/tax/info_edit.action" method="post" enctype="multipart/form-data">
<div class="p_d_1">
<div class="p_d_1_1">
<div class="content_info">
<div class="c_crumbs"><div><b></b><strong>信息發布管理</strong> - 修改信息</div></div>
<div class="tableH2">修改信息</div>
<table id="baseInfo" width="100%" align="center" class="list" border="0" cellpadding="0" cellspacing="0" >
<tr>
<td class="tdBg" width="200px">信息分類：</td>
<td><s:select name="info.type" list="#infoTypeMap"/></td>
<td class="tdBg" width="200px">來源：</td>
<td><s:textfield name="info.source"/></td>
</tr>
<tr>
<td class="tdBg" width="200px">信息標題：</td>
<td colspan="3"><s:textfield name="info.title" cssStyle="width:90%"/></td>
</tr>
<tr>
<td class="tdBg" width="200px">信息內容：</td>
<td colspan="3"><s:textarea id="editor" name="info.content" cssStyle="width:90%;height:160px;" /></td>
</tr>
<tr>
<td class="tdBg" width="200px">備注：</td>
<td colspan="3"><s:textarea name="info.memo" cols="90" rows="3"/></td>
</tr>
<tr>
<td class="tdBg" width="200px">創建人：</td>
<td>
<s:property value="info.creator"/>
<s:hidden name="info.creator"/>
</td>
<td class="tdBg" width="200px">創建時間：</td>
<td>
<s:date name="info.createTime" format="yyyy-MM-dd HH:ss"/>
<s:hidden name="info.createTime"/>
</td>
</tr>
</table>
<!-- 當前信息的id和狀態 -->
<s:hidden name="info.infoId"/>
<s:hidden name="info.state"/>
<!-- 暫存查詢條件值 -->
<s:hidden name="searchContent"/>
<s:hidden name="pageNo"/>
<div class="tc mt20">
<input type="submit" class="btnB2" value="保存" />
<input type="button" onclick="javascript:history.go(-1)" class="btnB2" value="返回" />
</div>
</div></div></div>
</form>
</body>
</html>知識點（1）：為了保存查詢的關鍵字和分頁，將相應信息隱藏在編輯頁面
<!-- 暫存查詢條件值 --> <s:hidden name="searchContent"/> <s:hidden name="pageNo"/>
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