?
import
?java.util.ArrayList;
import
?java.util.HashMap;
import
?java.util.List;
import
?java.util.Map;
import
?javax.servlet.jsp.JspException;
import
?javax.servlet.jsp.JspWriter;
import
?javax.servlet.jsp.tagext.TagSupport;
/**
?*?自定義的分頁(yè)標(biāo)簽
?*?
?*?
@author
?馬萬(wàn)林
?*?
?
*/
public
?
class
?NumenTag?
extends
?TagSupport?
{
????
private
?String?url?
=
?
null
;
????
private
?Result?result;
????
private
?String?page?
=
?
null
;
????
private
?String[]?p;
????
private
?Map?kv?
=
?
new
?HashMap();
????
private
?List?key?
=
?
null
;
????
/**
?????*?分離參數(shù)
?????*?
@param
?params
?????
*/
????
public
?
void
?setParams(String?params)?
{
????????key?
=
?
new
?ArrayList();
????????p?
=
?params.split(
"
;
"
);
????????
for
?(
int
?i?
=
?
0
;?p.length
>
1
&&
i?
<
?p.length;?i
++
)?
{
????????????kv.put(p[i].split(
"
:
"
)[
0
],?p[i].split(
"
:
"
)[
1
]);
????????????key.add(p[i].split(
"
:
"
)[
0
]);
????????}
????}
????
/**
?????*?分頁(yè)的結(jié)果
?????*?
@param
?result
?????
*/
????
public
?
void
?setResult(String?result)?
{
????????
this
.result?
=
?(Result)?pageContext.getRequest().getAttribute(
"
result
"
);
????????
this
.page?
=
?(String)?pageContext.getRequest().getAttribute(
"
page
"
);
????}
????
public
?
void
?setUrl(String?url)?
{
????????
this
.url?
=
?url;
????}
????
public
?
int
?doStartTag()?
throws
?JspException?
{
????????StringBuffer?sb?
=
?
null
;
????????
if
?(result?
!=
?
null
?
&&
?result.getContent()?
!=
?
null
????????????????
&&
?result.getContent().size()?
>
?
0
)?
{
????????????sb?
=
?
new
?StringBuffer(
"
分頁(yè):?
"
);
????????????
if
?(result.getPage().getHasPrePage())
{
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=1
"
);
????????????????
else
????????????????????sb.append(
"
&page=1
"
);
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
首頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(
????????????????????????????result.getPage().getPreviousPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(
????????????????????????????result.getPage().getPreviousPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
上頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????}
????????????
if
?(result.getPage().getHasNextPage())?
{
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(result.getPage().getNextPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(result.getPage().getNextPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
下頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(result.getPage().getTotalPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(result.getPage().getTotalPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
尾頁(yè)
"
).append(
"
</a>
"
);
????????????}
????????????sb
????????????????????.append(
"
?跳轉(zhuǎn)到:<select?name='goToPage'?onchange='javascript:goPage(this.value)'>
"
);
????????????
int
?s?
=
?result.getPage().getTotalCount();
????????????
for
?(
int
?i?
=
?
1
;?i?
<=
?s;?i
++
)?
{
????????????????sb.append(
"
<option?value=
"
).append(i);
????????????????
if
?(Integer.parseInt(page)?
==
?i)
????????????????????sb.append(
"
?selected
"
);
????????????????sb.append(
"
>第
"
).append(i).append(
"
頁(yè)</option>
"
);
????????????}
????????????sb.append(
"
</select>
"
);
????????????sb.append(
"
<script?language=javascript>
"
);
????????????sb.append(
"
function?goPage(page){
"
).append(
"
window.location='
"
)
????????????????????.append(url);
????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????sb.append(
"
?page='+
"
).append(
"
page
"
);
????????????
else
????????????????sb.append(
"
&page='+
"
).append(
"
page
"
);
????????????sb.append(
"
+'
"
);
????????????linkParams(sb);
????????????sb.append(
"
';
"
);
????????????sb.append(
"
}
"
);
????????????sb.append(
"
</script>
"
);
????????}
????????
try
?
{
????????????
if
?(sb?
!=
?
null
)?
{
????????????????JspWriter?out?
=
?pageContext.getOut();
????????????????out.print(sb);
????????????}
????????}
?
catch
?(Exception?e)?
{
????????????
throw
?
new
?JspException(e);
????????}
????????
return
?EVAL_PAGE;
????}
????
????
/**
?????*?鏈接參數(shù)處理
?????*?
@param
?sb
?????
*/
????
private
?
void
?linkParams(StringBuffer?sb)?
{
????????
for
?(
int
?i?
=
?
0
;?i?
<
?key.size();?i
++
)?
{
????????????sb.append(
"
&
"
).append(key.get(i)).append(
"
=
"
).append(
????????????????????kv.get(key.get(i)));
????????}
????}
}
<?
xml??version="1.0"??encoding="utf-8"??
?>
?
<!
DOCTYPE?taglib?PUBLIC?"-//Sun?Microsystems,?Inc.//DTD?JSP?Tag?Library?1.2//EN"?"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd"
>
<
taglib
>
????
<
tlib-version
>
1.0
</
tlib-version
>
????
<
jsp-version
>
1.2
</
jsp-version
>
????
<
short-name
>
numen
</
short-name
1,標(biāo)簽的實(shí)現(xiàn)類(lèi)NumenTag.java
?
import
?java.util.ArrayList;
import
?java.util.HashMap;
import
?java.util.List;
import
?java.util.Map;
import
?javax.servlet.jsp.JspException;
import
?javax.servlet.jsp.JspWriter;
import
?javax.servlet.jsp.tagext.TagSupport;
/**
?*?自定義的分頁(yè)標(biāo)簽
?*?
?*?
@author
?馬萬(wàn)林
?*?
?
*/
public
?
class
?NumenTag?
extends
?TagSupport?
{
????
private
?String?url?
=
?
null
;
????
private
?Result?result;
????
private
?String?page?
=
?
null
;
????
private
?String[]?p;
????
private
?Map?kv?
=
?
new
?HashMap();
????
private
?List?key?
=
?
null
;
????
/**
????
?????*?分離參數(shù)
?????*?
@param
?params
?????
*/
????
public
?
void
?setParams(String?params)?
{
????????key?
=
?
new
?ArrayList();
????????p?
=
?params.split(
"
;
"
);
????????
for
?(
int
?i?
=
?
0
;?p.length
>
1
&&
i?
<
?p.length;?i
++
)?
{
????????????kv.put(p[i].split(
"
:
"
)[
0
],?p[i].split(
"
:
"
)[
1
]);
????????????key.add(p[i].split(
"
:
"
)[
0
]);
????????}
????}
????
/**
?????*?分頁(yè)的結(jié)果
?????*?
@param
?result
?????
*/
????
public
?
void
?setResult(String?result)?
{
????????
this
.result?
=
?(Result)?pageContext.getRequest().getAttribute(
"
result
"
);
????????
this
.page?
=
?(String)?pageContext.getRequest().getAttribute(
"
page
"
);
????}
????
public
?
void
?setUrl(String?url)?
{
????????
this
.url?
=
?url;
????}
????
public
?
int
?doStartTag()?
throws
?JspException?
{
????????StringBuffer?sb?
=
?
null
;
????????
if
?(result?
!=
?
null
?
&&
?result.getContent()?
!=
?
null
????????????????
&&
?result.getContent().size()?
>
?
0
)?
{
????????????sb?
=
?
new
?StringBuffer(
"
分頁(yè):?
"
);
????????????
if
?(result.getPage().getHasPrePage())
{
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=1
"
);
????????????????
else
????????????????????sb.append(
"
&page=1
"
);
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
首頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(
????????????????????????????result.getPage().getPreviousPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(
????????????????????????????result.getPage().getPreviousPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
上頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????}
????????????
if
?(result.getPage().getHasNextPage())?
{
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(result.getPage().getNextPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(result.getPage().getNextPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
下頁(yè)
"
).append(
"
</a>
"
).append(
"
?|?
"
);
????????????????sb.append(
"
<a?href='
"
).append(url);
????????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????????sb.append(
"
?page=
"
).append(result.getPage().getTotalPage());
????????????????
else
????????????????????sb.append(
"
&page=
"
).append(result.getPage().getTotalPage());
????????????????linkParams(sb);
????????????????sb.append(
"
'>
"
).append(
"
尾頁(yè)
"
).append(
"
</a>
"
);
????????????}
????????????sb
????????????????????.append(
"
?跳轉(zhuǎn)到:<select?name='goToPage'?onchange='javascript:goPage(this.value)'>
"
);
????????????
int
?s?
=
?result.getPage().getTotalCount();
????????????
for
?(
int
?i?
=
?
1
;?i?
<=
?s;?i
++
)?
{
????????????????sb.append(
"
<option?value=
"
).append(i);
????????????????
if
?(Integer.parseInt(page)?
==
?i)
????????????????????sb.append(
"
?selected
"
);
????????????????sb.append(
"
>第
"
).append(i).append(
"
頁(yè)</option>
"
);
????????????}
????????????sb.append(
"
</select>
"
);
????????????sb.append(
"
<script?language=javascript>
"
);
????????????sb.append(
"
function?goPage(page){
"
).append(
"
window.location='
"
)
????????????????????.append(url);
????????????
if
?(url.indexOf(
"
?
"
)?
==
?
-
1
)
????????????????sb.append(
"
?page='+
"
).append(
"
page
"
);
????????????
else
????????????????sb.append(
"
&page='+
"
).append(
"
page
"
);
????????????sb.append(
"
+'
"
);
????????????linkParams(sb);
????????????sb.append(
"
';
"
);
????????????sb.append(
"
}
"
);
????????????sb.append(
"
</script>
"
);
????????}
????????
try
?
{
????????????
if
?(sb?
!=
?
null
)?
{
????????????????JspWriter?out?
=
?pageContext.getOut();
????????????????out.print(sb);
????????????}
????????}
?
catch
?(Exception?e)?
{
????????????
throw
?
new
?JspException(e);
????????}
????????
return
?EVAL_PAGE;
????}
????
????
/**
?????*?鏈接參數(shù)處理
?????*?
@param
?sb
?????
*/
????
private
?
void
?linkParams(StringBuffer?sb)?
{
????????
for
?(
int
?i?
=
?
0
;?i?
<
?key.size();?i
++
)?
{
????????????sb.append(
"
&
"
).append(key.get(i)).append(
"
=
"
).append(
????????????????????kv.get(key.get(i)));
????????}
????}
}
?
2,標(biāo)簽定義文件numentag.tld
?
<?
xml??version="1.0"??encoding="utf-8"??
?>
?
<!
DOCTYPE?taglib?PUBLIC?"-//Sun?Microsystems,?Inc.//DTD?JSP?Tag?Library?1.2//EN"?"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd"
>
<
taglib
>
????
<
tlib-version
>
1.0
</
tlib-version
>
????
<
jsp-version
>
1.2
</
jsp-version
>
????
<
short-name
>
numen
</
short-name
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