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1.pagination.tld

<? xml?version="1.0"?encoding="UTF-8" ?> ?????
?2

<! DOCTYPE?taglib?PUBLIC?"-//Sun?Microsystems,?Inc.//DTD?JSP?Tag?Library?1.2//EN"?"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd" > ?????
?3

< taglib > ??
?4

???? < tlib-version > 2.2.3 </ tlib-version > ?????
?5

???? < jsp-version > 1.2 </ jsp-version > ?????
?6

???? < short-name > tangs </ short-name > ?????
?7

???? < uri > /tangs </ uri > ?
?8

???? < description > author?xiongwei </ description > ???
?9

???? < display-name > "Tangs?Tags" </ display-name > ?????
10

??????????
11

???????? < tag > ?????
12

???????????? < name > pages </ name > ?????
13

???????????? < tag-class > cn.com.sunrise.home.util.PageTag </ tag-class > ??????
14

???????????? < body-content > empty </ body-content > ?????
15

???????????? < attribute > ??????
16

???????????????? < name > pageNo </ name > ?????
17

???????????????? < required > true </ required > ?????
18

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
19

???????????? </ attribute > ?????
20

???????????? < attribute > ?????
21

???????????????? < name > total </ name > ?????
22

???????????????? < required > true </ required > ?????
23

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
24

???????????? </ attribute > ????
25

???????????? < attribute > ?????
26

???????????????? < name > permeterName </ name > ?????
27

???????????????? < required > false </ required > ?????
28

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
29

???????????? </ attribute > ????
30

???????????? < attribute > ?????
31

???????????????? < name > includes </ name > ?????
32

???????????????? < required > false </ required > ?????
33

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
34

???????????? </ attribute > ???
35

???????????? < attribute > ?????
36

???????????????? < name > styleClass </ name > ?????
37

???????????????? < required > false </ required > ?????
38

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
39

???????????? </ attribute > ?????
40

???????????? < attribute > ?????
41

???????????????? < name > theme </ name > ?????
42

???????????????? < required > false </ required > ?????
43

???????????????? < rtexprvalue > true </ rtexprvalue > ?????
44

???????????? </ attribute > ????
45

???????? </ tag > ?????
46

</ taglib > ????
47

2.Pages.java
??1package?cn.com.sunrise.home.util;???
??2??
??3import?java.io.IOException;???
??4import?java.io.Writer;???
??5import?java.util.Map;???
??6import?java.util.logging.Level;???
??7import?java.util.logging.Logger;???
??8??
??9import?javax.servlet.http.HttpServletRequest;???
?10??
?11import?org.apache.struts2.StrutsStatics;???
?12import?org.apache.struts2.components.Component;???
?13import?org.apache.struts2.dispatcher.StrutsRequestWrapper;???
?14??
?15import?com.opensymphony.xwork2.util.ValueStack;???
?16??
?17/**??
?18?*?分頁邏輯Bean??
?19?*?@author?xiongwei
?20?*/??
?21public?class?Pages?extends?Component?{???
?22???????
?23????private?HttpServletRequest?request;???
?24???????
?25????private?String?pageNo;???
?26????private?String?total;???
?27????private?String?styleClass;???
?28????private?String?theme;???
?29????private?String?includes;???
?30???????
?31????public?String?getTheme()?{???
?32????????return?theme;???
?33????}???
?34????public?void?setTheme(String?theme)?{???
?35????????this.theme?=?theme;???
?36????}???????
?37????public?String?getIncludes()?{???
?38????????return?includes;???
?39????}???
?40????public?void?setIncludes(String?includes)?{???
?41????????this.includes?=?includes;???
?42????}???
?43????public?String?getStyleClass()?{???
?44????????return?styleClass;???
?45????}???
?46????public?void?setStyleClass(String?styleClass)?{???
?47????????this.styleClass?=?styleClass;???
?48????}???????
?49????public?String?getPageNo()?{???
?50????????return?pageNo;???
?51????}???
?52????public?void?setPageNo(String?pageNo)?{???
?53????????this.pageNo?=?pageNo;???
?54????}???
?55????public?String?getTotal()?{???
?56????????return?total;???
?57????}???
?58????public?void?setTotal(String?total)?{???
?59????????this.total?=?total;???
?60????}???
?61???????
?62???????
?63????public?Pages(ValueStack?arg0,?HttpServletRequest?request)?{???
?64????????super(arg0);???
?65????????this.request?=?request;???
?66????}???
?67??
?68????@Override??
?69????public?boolean?start(Writer?writer)?{???
?70???????????
?71????????boolean?result?=?super.start(writer);???
?72????????try?{???
?73????????????StringBuilder?str?=?new?StringBuilder();???
?74????????????Map?cont=this.getStack().getContext();???
?75????????????StrutsRequestWrapper?req=(StrutsRequestWrapper)cont.get(StrutsStatics.HTTP_REQUEST);???
?76???????????????
?77????????????String?url=(String)req.getAttribute("javax.servlet.forward.request_uri");???
?78??????????????????????????
?79????????????//從ValueStack中取出數值???
?80????????????Object?obj=this.getStack().findValue(pageNo);???????????????
?81????????????pageNo?=?String.valueOf((Integer)obj);?????
?82????????????obj=this.getStack().findValue(total);???
?83????????????total?=?String.valueOf((Integer)obj);?????
?84???????????????
?85????????????StringBuffer?perUrl=new?StringBuffer("");???
?86????????????if(includes!=null){???
?87????????????????String[]?perm=includes.split(",");???
?88????????????????for(int?i=0;i<perm.length;i++){???
?89????????????????????String?permName=perm[i];???
?90????????????????????Object?obje=this.getStack().findValue(permName);???
?91?????????????????????String?vType=obje.getClass().toString();???
?92???????????????????????
?93????????????????????vType=vType.substring(vType.lastIndexOf(".")+1,vType.length());????????????????????????
?94????????????????????perUrl.append("&"+permName);???
?95????????????????????if(vType.equals("String")){???
?96????????????????????????String?tmp=?(String)this.getStack().findValue(permName);???
?97????????????????????????perUrl.append("="+tmp);???
?98????????????????????}else?if(vType.equals("Long")){???
?99????????????????????????Long?tmp=?(Long)this.getStack().findValue(permName);???
100????????????????????????perUrl.append("="+tmp);???
101????????????????????}else?if(vType.equals("Float")){???
102????????????????????????Float?tmp=?(Float)this.getStack().findValue(permName);???
103????????????????????????perUrl.append("="+tmp);???
104????????????????????}else?if(vType.equals("Integer")){???
105????????????????????????Integer?tmp=?(Integer)this.getStack().findValue(permName);???
106????????????????????????perUrl.append("="+tmp);???
107????????????????????}else?if(vType.equals("Boolean")){???
108????????????????????????Boolean?tmp=?(Boolean)this.getStack().findValue(permName);???
109????????????????????????perUrl.append("="+tmp);???
110????????????????????}???
111????????????????}??????????????????
112????????????}???
113???????????????
114???????????????
115????????????Integer?cpageInt?=?Integer.valueOf(pageNo);???
116????????????str.append("<span?");???
117????????????if?(styleClass?!=?null)?{???
118????????????????str.append("?class='"+styleClass+"'>");???
119????????????}?else?{???
120????????????????str.append(">");???
121????????????}???
122????????????//文本樣式???
123????????????if?(theme?==?null?||?"text".equals(theme))?{???
124????????????????//當前頁與總頁數相等???
125????????????????if?(pageNo.equals(total))?{???
126????????????????????//如果total?=?1，則無需分頁，顯示“[第1頁]?[共1頁]”???
127????????????????????if?("1".equals(total))?{???
128?????????????????????????
129????????????????????}?else?{???
130????????????????????????//到達最后一頁,顯示“[首頁]?[上一頁]?[末頁]”?
131????????????????????????str.append("<td>   ? </td>");
132????????????????????????str.append("<td><a?href='"+url+"?pageNo=1"+perUrl+"'><font?class='luntanbmy'>首頁</a></td>");
133????????????????????????str.append("<td>   ? </td>");??
134????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?(cpageInt?-?1)+perUrl+"'><font?class='luntanbmy'>上一頁</a></td>");?
135????????????????????????str.append("<td>   ? </td>");
136????????????????????????str.append("<td><a?href='#'><font?class='luntanbmy'>下一頁</a></td>");
137????????????????????????str.append("<td>   ? </td>");
138????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?total+perUrl+"'><font?class='luntanbmy'>最后一頁</a></td>");
139????????????????????????str.append("<td>   ? </td>");
140????????????????????????str.append("<td?class='lqbz'>共<span?style='color:?red'>"?+?total?+?"頁</td>");?
141????????????????????????str.append("<td>   ? </td>");
142????????????????????????str.append("<td?class='lqbz'>當前第<span?style='color:?red'>"?+?pageNo?+?"頁</td>");?
143????????????????????}???
144????????????????}?else?{???
145????????????????????//當前頁與總頁數不相同???
146????????????????????if?("1".equals(pageNo))?{???
147????????????????????????//第一頁，顯示“[首頁]?[下一頁]?[末頁]”???
148????????????????????????str.append("<td>   ? </td>");
149????????????????????????str.append("<td><a?href='"+url+"?pageNo=1"+perUrl+"'><font?class='luntanbmy'>首頁</a></td>");
150????????????????????????str.append("<td>   ? </td>");??
151????????????????????????str.append("<td><a?href='#'><font?class='luntanbmy'>上一頁</a></td>");?
152????????????????????????str.append("<td>   ? </td>");
153????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?(cpageInt?+?1)?+perUrl+"'><font?class='luntanbmy'>下一頁</a></td>");
154????????????????????????str.append("<td>   ? </td>");
155????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?total+perUrl+"'><font?class='luntanbmy'>最后一頁</a></td>");
156????????????????????????str.append("<td>   ? </td>");
157????????????????????????str.append("<td?class='lqbz'>共<span?style='color:?red'>"?+?total?+?"頁</td>");?
158????????????????????????str.append("<td>   ? </td>");
159????????????????????????str.append("<td?class='lqbz'>當前第<span?style='color:?red'>"?+?pageNo?+?"頁</td>");?
160????????????????????}?else?{???
161????????????????????????//不是第一頁，顯示“[首頁]?[上一頁]?[下一頁]?[末頁]”???
162????????????????????????str.append("<td>   ? </td>");
163????????????????????????str.append("<td><a?href='"+url+"?pageNo=1"+perUrl+"'><font?class='luntanbmy'>首頁</a></td>");
164????????????????????????str.append("<td>   ? </td>");??
165????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?(cpageInt?-?1)+perUrl+"'><font?class='luntanbmy'>上一頁</a></td>");?
166????????????????????????str.append("<td>   ? </td>");
167????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?(cpageInt?+?1)?+perUrl+"'><font?class='luntanbmy'>下一頁</a></td>");
168????????????????????????str.append("<td>   ? </td>");
169????????????????????????str.append("<td><a?href='"+url+"?pageNo="?+?total+perUrl+"'><font?class='luntanbmy'>最后一頁</a></td>");
170????????????????????????str.append("<td>   ? </td>");
171????????????????????????str.append("<td?class='lqbz'>共<span?style='color:?red'>"?+?total?+?"頁</td>");?
172????????????????????????str.append("<td>   ? </td>");
173????????????????????????str.append("<td?class='lqbz'>當前第<span?style='color:?red'>"?+?pageNo?+?"頁</td>");?
174????????????????????}???
175????????????????}???
176????????????}?
177????????????str.append("");???
178???????????????
179????????????writer.write(str.toString());???
180???????????????
181????????}?catch?(IOException?ex)?{???
182????????????Logger.getLogger(Pages.class.getName()).log(Level.SEVERE,?null,?ex);???
183????????}???
184????????return?result;???
185????}???
186}?

3.PageTag.java
?1package?cn.com.sunrise.home.util;???
?2/**//*??
?3?*?To?change?this?template,?choose?Tools?|?Templates??
?4?*?and?open?the?template?in?the?editor.??
?5?*/??
?6??
?7??
?8import?com.opensymphony.xwork2.util.ValueStack;???
?9import?javax.servlet.http.HttpServletRequest;???
10import?javax.servlet.http.HttpServletResponse;???
11import?org.apache.struts2.components.Component;???
12import?org.apache.struts2.views.jsp.ComponentTagSupport;???
13??
14/**?*//**??
15?*?分頁標簽??
16?*?@author?xiongwei??
17?*/??
18public?class?PageTag?extends?ComponentTagSupport?{???
19???????
20????private?String?pageNo;???
21????private?String?total;???
22????private?String?styleClass;???
23????private?String?theme;???
24????private?String?includes;???
25???????
26????public?void?setTheme(String?theme)?{???
27????????this.theme?=?theme;???
28????}???????
29????public?void?setStyleClass(String?styleClass)?{???
30????????this.styleClass?=?styleClass;???
31????}???
32????public?void?setPageNo(String?pageNo)?{???
33????????this.pageNo?=?pageNo;???
34????}???
35????public?void?setTotal(String?total)?{???
36????????this.total?=?total;???
37????}???
38????public?String?getIncludes()?{???
39????????return?includes;???
40????}???
41????public?void?setIncludes(String?includes)?{???
42????????this.includes?=?includes;???
43????}???
44??
45????@Override??
46????public?Component?getBean(ValueStack?arg0,?HttpServletRequest?arg1,?HttpServletResponse?arg2)?{???
47????????return?new?Pages(arg0,?arg1);???
48????}???
49??
50????protected?void?populateParams()?{???
51????????super.populateParams();???
52???????????
53????????Pages?pages?=?(Pages)component;???
54????????pages.setPageNo(pageNo);???
55????????pages.setIncludes(includes);???
56????????pages.setTotal(total);???
57????????pages.setStyleClass(styleClass);???
58????????pages.setTheme(theme);???
59??
60????}???
61}?

4.頁面應用
<%@ taglib prefix="tangs" uri="/WEB-INF/pagination.tld"%>
<tangs:pages pageNo="pageNo" total="total"?? theme="text"/>

5.action代碼片段
?private Integer total;???
??private Integer pageNo=1;

?public String listAllHotNews(){
?pageConfig.setAllRecordNum(dao.recordCount());
??total = pageConfig.getAllPageNum();
??int start = pageConfig.getPerRecordNum()* (pageNo - 1);
??int size = pageConfig.getPerRecordNum();
??hotNewsList = dao.listAllNews(start,size);
??return SUCCESS;
?}

6.pageConfig.java
?1package?cn.com.sunrise.home.credit.page;
?2
?3import?cn.com.sunrise.home.util.Constraint;
?4
?5public?class?PageConfig?{
?6????private?int?allRecordNum;//?總記錄數
?7
?8????private?int?allPageNum;//?總頁數
?9
10????private?int?perRecordNum?=Constraint.PAGESIZE;//?每頁顯示數
11
12????private?int?currPageNO;//?當前頁號
13
14????//?分頁提供存取方法
15????public?int?getAllRecordNum()?{
16????????return?allRecordNum;
17????}
18????//得到總頁數，用下面的算法
19????public?void?setAllRecordNum(int?allRecordNum)?{
20????????this.allRecordNum?=?allRecordNum;
21????????if(allRecordNum?%?perRecordNum?==?0){
22????????????this.allPageNum?=?allRecordNum?/?perRecordNum;
23????????}else{
24????????????this.allPageNum?=?allRecordNum?/?perRecordNum?+?1;
25????????}
26????}
27
28????public?int?getAllPageNum()?{
29????????return?allPageNum;
30????}
31
32????public?void?setAllPageNum(int?allPageNum)?{
33????????this.allPageNum?=?allPageNum;
34????}
35
36????public?int?getPerRecordNum()?{
37????????return?perRecordNum;
38????}
39
40????public?void?setPerRecordNum(int?perRecordNum)?{
41????????this.perRecordNum?=?perRecordNum;
42????}
43
44????public?int?getCurrPageNO()?{
45????????return?currPageNO;
46????}
47
48????public?void?setCurrPageNO(int?currPageNO)?{
49????????this.currPageNO?=?currPageNO;
50????}
51}
52
53

posted on 2009-09-25 16:29 tobyxiong 閱讀(2501) 評論(0) 編輯收藏所屬分類: java

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