Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9F,XjPK=
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ~l+~MB
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 !4F@ !.GG!
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 *=z.H
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。 :\#]uDT2=
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分页支持类: kGq<Zmy|
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java代码: jP@t!=
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package com.javaeye.common.util; '\m\$
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import java.util.List; F0NNS!WP7^
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publicclass PaginationSupport { N~arxe(K
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publicfinalstaticint PAGESIZE = 30; 8&f"")m
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privateint pageSize = PAGESIZE; gk6j5 $Y"<
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privateList items; }Lwj~{
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privateint totalCount; HNoh B4vt
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privateint[] indexes = newint[0]; OEGAwP?F
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privateint startIndex = 0; f{Y|FjPp=E
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public PaginationSupport(List items, int f<'&_*7,|t
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totalCount){ 1}q[8q
setPageSize(PAGESIZE); Q+ST8
setTotalCount(totalCount); |V~P6o(/
setItems(items); .}y
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setStartIndex(0); f&cG;Y
} SS~Txt75m
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public PaginationSupport(List items, int )J88gMk+
't_=%^q
totalCount, int startIndex){ mg,f> (
setPageSize(PAGESIZE); ^9b
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setTotalCount(totalCount); u!`C:C'
setItems(items); ujWHO$uz!
setStartIndex(startIndex); ng<`2XgU
} ?HcA&
;^8^L'7cr
public PaginationSupport(List items, int >`\*{]
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totalCount, int pageSize, int startIndex){ g4$%)0x%
setPageSize(pageSize); ft6^s(t
setTotalCount(totalCount); w+$gY?%
setItems(items); RK3/!C`
setStartIndex(startIndex); ?Ru`ma\;
} |8`;55G
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publicList getItems(){ /#se>4]
return items; +l/j6)O`(m
} ;VFr5.*x
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publicvoid setItems(List items){ ;Gs**BB&
this.items = items; k"7eHSy,
} dGteYt_F
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publicint getPageSize(){ Wkk Nyg,
return pageSize; =GVhAzD3
} .nH
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publicvoid setPageSize(int pageSize){ '> Q$5R1
this.pageSize = pageSize; u.=;A#
} C|zH {.H
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publicint getTotalCount(){ LG|,g3&
return totalCount; k0IU~y%
} {|E7N"Qzg
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publicvoid setTotalCount(int totalCount){ `j![
if(totalCount > 0){ T!a[@,)_
this.totalCount = totalCount; U}0/V
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int count = totalCount / k9xKaJ%1
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pageSize; KxwLKaImI
if(totalCount % pageSize > 0) :GYv9OG
count++; UG_0Y8$
indexes = newint[count]; eFI4(Y
for(int i = 0; i < count; i++){ xH[yIfHkG@
indexes = pageSize * ~`E4E
$IT9@}*{
i; WCu%@hh=h
} ;alFK*K6
}else{ w0Y%}7
this.totalCount = 0; []0~9,u
} \Agg6tYr
} )+,jal^7
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publicint[] getIndexes(){ l5ds`uR#
return indexes; V^+:U>$w
} "%t`I)
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publicvoid setIndexes(int[] indexes){ np^<HfYV
this.indexes = indexes; # :w2Hf6Q
} E0]h|/A]
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publicint getStartIndex(){ ug"<\"
return startIndex; SqF.DB~
} W?
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publicvoid setStartIndex(int startIndex){ UiZp-Y%ki
if(totalCount <= 0) i?dKmRp(@y
this.startIndex = 0; y?#J`o-
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elseif(startIndex >= totalCount) 'a^tL[rLP1
this.startIndex = indexes yKEFne8^
ca*[n~np
[indexes.length - 1]; E2H<{Q
elseif(startIndex < 0) *;E+9^:V
this.startIndex = 0; {b0&qV
else{ 8Vhck-wF
this.startIndex = indexes X6GkJ
R
+JS/Z5dl+}
[startIndex / pageSize]; 6n\z53Mk
} kseJm+Hc
} 0DVZRB
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publicint getNextIndex(){ WAXts]=
int nextIndex = getStartIndex() + -Dxhq&
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pageSize; QsJW"4d
if(nextIndex >= totalCount) 'F"Y?y:!
return getStartIndex(); RrdtU7i3
else 0/@ X!|X
return nextIndex; xTFrrmxOf
} 6.h
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publicint getPreviousIndex(){ A
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int previousIndex = getStartIndex() - kefv=n*]l
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pageSize; l()MYuLNV
if(previousIndex < 0) apD=>O
return0; o?mXxL)
else h`h>H
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return previousIndex;
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} 0O,T=z[+>
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} h<'5q&y
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抽象业务类 {_XrZ(y/
java代码: v;]I^Kq
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/** #>m,
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* Created on 2005-7-12 +iH30v
*/ G9n /S=R?
package com.javaeye.common.business; =PFR{=F
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import java.io.Serializable; C7 ]DJn
import java.util.List; d9-mWz(V+
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import org.hibernate.Criteria; fHe0W
import org.hibernate.HibernateException; FL#g9U>
import org.hibernate.Session; (ND5CKCR^
import org.hibernate.criterion.DetachedCriteria; me:|!lI7YU
import org.hibernate.criterion.Projections; &xBK\
import v=.z|QD^1
&H4uvJ_<
org.springframework.orm.hibernate3.HibernateCallback; (!VMnLlXRK
import xa{<R+LR
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org.springframework.orm.hibernate3.support.HibernateDaoS S}w.#tyEn
@bW[J
upport; w~$c= JO#
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import com.javaeye.common.util.PaginationSupport; cF_;hD|YZ
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public abstract class AbstractManager extends \7t5U7v8U
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HibernateDaoSupport { O[(?.9
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privateboolean cacheQueries = false; ,zN3? /7
pdi=6<?bd
privateString queryCacheRegion; 6/[Z178m
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publicvoid setCacheQueries(boolean m+Q5vkW
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cacheQueries){ ," C[Qg(
this.cacheQueries = cacheQueries; y^X\^Kq
} )pjjW"C+
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publicvoid setQueryCacheRegion(String 9P7xoXJ@y
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queryCacheRegion){ vr{'FMc
this.queryCacheRegion = fwi};)K
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queryCacheRegion; %wt2F-u
} A \MfF
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publicvoid save(finalObject entity){ -7I1Lh#M
getHibernateTemplate().save(entity); s-C!uq
} kUn2RZ6$#
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publicvoid persist(finalObject entity){ 7`blGzP_
getHibernateTemplate().save(entity); }iua]
4|
} 9u?)vR[@e
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publicvoid update(finalObject entity){ =de<WoKnu2
getHibernateTemplate().update(entity); +z:CZ(fb
} "YG\
O->_/_
publicvoid delete(finalObject entity){ G Sz @rDGY
getHibernateTemplate().delete(entity); U#;51_
} HQ^9[HN.
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publicObject load(finalClass entity, ~LawF_]6
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finalSerializable id){ 8%o~4u3
return getHibernateTemplate().load lo+xo;Nd
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(entity, id); 4? m/*VV
} 5Noe/6
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publicObject get(finalClass entity, L!;^#g
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finalSerializable id){ M!N`
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return getHibernateTemplate().get 6IEUJ-M Z
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(entity, id); ug^om{e-
} ;W7 hc!
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publicList findAll(finalClass entity){ ==]Z \jk
return getHibernateTemplate().find("from >vlQ|/C
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" + entity.getName()); RVc)")
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} Q0V^PDF
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publicList findByNamedQuery(finalString 5ZnSA9?
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namedQuery){ C
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return getHibernateTemplate i{gDW+N
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().findByNamedQuery(namedQuery); f5@.^hi[
} p QluGIX0V
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publicList findByNamedQuery(finalString query, (E!%v`_0
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finalObject parameter){ RK?jtb=&A
return getHibernateTemplate xN6?yr
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().findByNamedQuery(query, parameter); Dba+z-3Nzy
} B-!guf
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publicList findByNamedQuery(finalString query, "E.\6sC
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finalObject[] parameters){ K<c2PFo)Q
return getHibernateTemplate ^~^mR#<P$
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().findByNamedQuery(query, parameters); Q"A_bdg5
} Ay2b,q
+Dv 7:x7
publicList find(finalString query){ !0`lu_ZN
return getHibernateTemplate().find z~F37]W3[
p`
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(query); Iq+2mQi*/k
} I?^aCnU
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publicList find(finalString query, finalObject g{e/X~
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parameter){ LyIKP$t
return getHibernateTemplate().find 5)w4)K-%
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(query, parameter); W:WQaF`2x
} iBucT"d]
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public PaginationSupport findPageByCriteria T-^0:@5o9
+ a-D#^2;
(final DetachedCriteria detachedCriteria){ vyE{WkZxR
return findPageByCriteria 5\WUoSgy
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 6VC-KY
} 4iwf\#
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public PaginationSupport findPageByCriteria {t&*>ma6)
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(final DetachedCriteria detachedCriteria, finalint C ck#Y
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startIndex){ n[|6khOL-
return findPageByCriteria Y,'%7u
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(detachedCriteria, PaginationSupport.PAGESIZE, n!ZMTcK8
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startIndex); \6{LR&
} $(3uOsy
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public PaginationSupport findPageByCriteria ^+wk
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(final DetachedCriteria detachedCriteria, finalint !~)90Z!
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pageSize,
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finalint startIndex){ Hte[TRbM
return(PaginationSupport) wqP2Gw7jh6
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getHibernateTemplate().execute(new HibernateCallback(){ z|I0-1tAK
publicObject doInHibernate dq(E&`SzK
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(Session session)throws HibernateException { Hs$'0:
Criteria criteria = ~q 7;8<U
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detachedCriteria.getExecutableCriteria(session); UA0F):
int totalCount = tF^g<)S;t
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((Integer) criteria.setProjection(Projections.rowCount gX^ PSsp
o5SQ1;`
()).uniqueResult()).intValue(); myIe_k,F
criteria.setProjection J1X~vQAe
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(null); P_&p=${
List items = nM8[
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criteria.setFirstResult(startIndex).setMaxResults e\D|
o?v
U7h(-dV
(pageSize).list(); ?`H[u7*%
PaginationSupport ps = P#MK
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new PaginationSupport(items, totalCount, pageSize, QD$Gw-U-l=
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startIndex); <: :VCA %
return ps; $Asr`Q1i
} g5Hr7Km
}, true); *C7F2o
} R5(F)abi
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public List findAllByCriteria(final bY)#v?
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DetachedCriteria detachedCriteria){
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return(List) getHibernateTemplate Ys3uPs
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().execute(new HibernateCallback(){ s6n`?,vw
publicObject doInHibernate |@wyC0k!
@^&7$#jq%
(Session session)throws HibernateException { yQ%"U^.m
Criteria criteria = nxfoWy
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detachedCriteria.getExecutableCriteria(session); O m9jtWk
return criteria.list(); _{)9b24(
} s$ z2 c
}, true); N 9LgU)-Jt
} u okc:D
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public int getCountByCriteria(final -{{[cTI
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DetachedCriteria detachedCriteria){ 0%#\w*X8
Integer count = (Integer) G\kpUdj}
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getHibernateTemplate().execute(new HibernateCallback(){ TH:W#Ot
publicObject doInHibernate 59lj7
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(Session session)throws HibernateException { vy9dAl
Criteria criteria = ]iVLHVqz
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detachedCriteria.getExecutableCriteria(session); WbcS: !0
return 4TZ cc|B5
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criteria.setProjection(Projections.rowCount 5FOqv=6S
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()).uniqueResult(); a
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} {v,)G)obWw
}, true); %\6Q .V#s
return count.intValue(); *yez:qnx
} +~35G:&:
} jatr/
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用户在web层构造查询条件detachedCriteria,和可选的 ^RNOcM|
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 O|'1B>X
Ll}yJ#3,
PaginationSupport的实例ps。 K 1W].(-@4
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ps.getItems()得到已分页好的结果集 Bp_wnd
ps.getIndexes()得到分页索引的数组 ?obm7<
ps.getTotalCount()得到总结果数 G5Yk bw#
ps.getStartIndex()当前分页索引 +@:L|uFU
ps.getNextIndex()下一页索引 OfZN|S+~W
ps.getPreviousIndex()上一页索引 -6C +LbV
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 kbI/4IRW
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,尤其是上面的示例代码,让我着实觉得该对我原来的分页查询做 qLK?%?.N<
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lu
一下代码重构了。 X.V[0$.;
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我把原本我的做法也提供出来供大家讨论吧: \#Up|u:
DL8x":;
首先,为了实现分页查询,我封装了一个Page类: @S3f:s0~D
java代码: Yj3I5RG
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/*Created on 2005-4-14*/ ^}$O|t
package org.flyware.util.page; 5?u}#zO
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/** NNkP\oh\
* @author Joa eV};9VJ$F
* l=={pb
*/ 3z8C
publicclass Page { w0J|u'H
\".^K5Pm
/** imply if the page has previous page */ E>uVofhml
privateboolean hasPrePage; zT9JBMNE:
j*R,m1e8
/** imply if the page has next page */ "484n/D
privateboolean hasNextPage; 1hmc,c
)!W45"l-3M
/** the number of every page */ CIC[1,
privateint everyPage; Lx[
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/** the total page number */ cgT
privateint totalPage; s0"e'
u{e-G&]^;
/** the number of current page */ \>Zvev!s
privateint currentPage; @N.jB#nEb
>U!*y4
/** the begin index of the records by the current 5M_Wj*a}7
6lFfS!ZFA
query */ rf
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privateint beginIndex; Ol/N}M|3
n"D ?I
#"*e+.j[;
/** The default constructor */ L
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public Page(){ 3iX?~
~mp0B9L%
} 1KE:[YQ1
Y%aWK~O
/** construct the page by everyPage rZ03x\2
* @param everyPage -ysn&d\rV
* */ [2c{k
public Page(int everyPage){ ROb\Rxm
this.everyPage = everyPage; 19U]2D/z
} !{%: qQiA
$jzFc!rs
/** The whole constructor */ hZ$t$3
public Page(boolean hasPrePage, boolean hasNextPage, A[N{
0 p uY"[c
HIvZQQW|
int everyPage, int totalPage, j}J Z
int currentPage, int beginIndex){ q6d~V]4:
this.hasPrePage = hasPrePage; ,FSrn~-j9
this.hasNextPage = hasNextPage; T6BFX0$
this.everyPage = everyPage; A#y@`}]!'
this.totalPage = totalPage; r ,(Mu
this.currentPage = currentPage; 8p^B hd
this.beginIndex = beginIndex; H`QQG!
} D-p.kA3MJ
5Rv+zQ#GR
/** C(?blv-vM0
* @return bn9;7`>.
* Returns the beginIndex. zw@'vncc
*/ o^p
publicint getBeginIndex(){ M[]A2'fS
return beginIndex; 5"KlRuv%
} 2umv|]n+l|
v3[@1FQ"
/** iw?I
* @param beginIndex I/J7rkf
* The beginIndex to set. E /<lGm:.
*/ 3R$Z[D-
publicvoid setBeginIndex(int beginIndex){ 'Prxocxq
this.beginIndex = beginIndex; Li{~=S@N*
} )7c b6jCU
}FqA ppr
/** r?$?;%|C
* @return w}cY6O,1
* Returns the currentPage. d l]#
*/ }:Z9Vc ZP`
publicint getCurrentPage(){ N_C;&hJN$w
return currentPage; [\z/Lbn
,.
} fPa9ofU/kr
?}QH=&=^
/** DvXHK
* @param currentPage
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* The currentPage to set. gXFWxT8S
*/ cI0 ]}S
publicvoid setCurrentPage(int currentPage){ d9^E.8p$
this.currentPage = currentPage; 30j|D3-
} ?=Pd
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/** n$L51#'
* @return @ EuFJ=h
* Returns the everyPage. !0VfbY9C
*/ f:JlZ&
publicint getEveryPage(){ p<Z3tD;Z
return everyPage; )u:Q)
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} #o`Ny4sq/
`|Z}2vo;j
/** kma?v B
* @param everyPage coE&24,0
* The everyPage to set. .x83Ah`
*/ Pt,ebL~
publicvoid setEveryPage(int everyPage){ CB\{!
this.everyPage = everyPage; z`@^5_
} QP@<)`1t9
iI1n2>V3y
/** /u<nLj 1
* @return {}~: &.D
* Returns the hasNextPage. YvL?j
*/ Y$>-%KcKeI
publicboolean getHasNextPage(){ bzpFbfb
return hasNextPage; m!n/U-^
} W~n.Xeu{C
)$GIN/i
/** 5N$E()m$
* @param hasNextPage yBpk$
* The hasNextPage to set. <!d"E@%v@
*/ "8f?h%t
publicvoid setHasNextPage(boolean hasNextPage){ j V3)2C}
this.hasNextPage = hasNextPage; h!@,8y[B
} JtKp(k&
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/** ^Mkk@F&1
* @return ;!>Wz9
* Returns the hasPrePage. Xf'=+f2p
*/ `(y(w-:W1
publicboolean getHasPrePage(){ p&p.Q^"ok
return hasPrePage; sUkm|K`#
} 6rti '
)KSoq/
/** K+\nC)oG
* @param hasPrePage AEirj /
* The hasPrePage to set. 3L>IX8_
*/ '_s}o<
publicvoid setHasPrePage(boolean hasPrePage){ {Bvj"mL]j
this.hasPrePage = hasPrePage; F?+3%>/A@
} {BBw$m, o
gbBy/_b
/** W[bmzvJ_X
* @return Returns the totalPage. ;E;To\NCYF
* ^y.nDs%ZT7
*/ q-$`k
publicint getTotalPage(){ gApoX0nrv
return totalPage; 0Wvq>R.(]7
} nv0@xnbz
q(o/yx{bm
/** 5FKBv
e@
* @param totalPage l*aj#%ha
* The totalPage to set. yGBQ0o7E
*/ x+5p1sv6
publicvoid setTotalPage(int totalPage){ o?Nu:&yE
this.totalPage = totalPage; cc=gCE
} FwAKP>6 *
@~
Dh'w2q
} z$lF)r:Bc
CBT>"sYE1
5MTgK=c
Lm*VN~2
CJknJn3m&
上面的这个Page类对象只是一个完整的Page描述,接下来我写了一 0BPMmk
IakKi4(
个PageUtil,负责对Page对象进行构造: `g''rfk}
java代码: 9<Eg}Ic
V ~MiO.B
rZ1Hf11C
/*Created on 2005-4-14*/ !c W[G/W8
package org.flyware.util.page; $o?@0
eJ8]g49mD6
import org.apache.commons.logging.Log; W_M'.1 t
import org.apache.commons.logging.LogFactory; zoDZZ%{
.lG5=Th!
/** PaB!,<A
* @author Joa *4Fr&^M\
* SkNre$>t{
*/ j=+"Qz/hr_
publicclass PageUtil { ^H'a4G3
EpPf_ \o
privatestaticfinal Log logger = LogFactory.getLog ^)yTBn,
G* b2,9&F
(PageUtil.class); yBed kj
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/** ;;s* Ohh
* Use the origin page to create a new page ,8G{]X)
* @param page 9W`Frx'h1
* @param totalRecords NmIHYN3
* @return B6P|Z%E;D6
*/ ^nK7i[yF.k
publicstatic Page createPage(Page page, int gYop--\14]
ybdd;t}&1
totalRecords){ Y$8JM
return createPage(page.getEveryPage(), t%1 ^Li
O;Y:uHf
page.getCurrentPage(), totalRecords); t=euE{c
} dj6*6qX0'^
4pU>x$3$
/** #_
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* the basic page utils not including exception &fP XU*l4
~|Y>:M+0Z
handler Z(0@1l`Z-`
* @param everyPage .y5,x\Pq(
* @param currentPage ._:nw=Y0<}
* @param totalRecords g&/p*c_
* @return page f3*?MXxb16
*/ l7[7_iB&E
publicstatic Page createPage(int everyPage, int .3 pbuU
+?D6T!)
currentPage, int totalRecords){ qf)$$ qi
everyPage = getEveryPage(everyPage); vC;]jJb:
currentPage = getCurrentPage(currentPage); >XW*T5aUA
int beginIndex = getBeginIndex(everyPage, $K~LM8_CKy
oT95^y\9
currentPage); E N^Uki`
int totalPage = getTotalPage(everyPage, m(OvD!
r} _c
totalRecords); 'Yy&G\S
boolean hasNextPage = hasNextPage(currentPage, { >{B`e`$
)
iQ
totalPage); _>o-UBb4]T
boolean hasPrePage = hasPrePage(currentPage); gieJ}Bv
]1-z!B 4K
returnnew Page(hasPrePage, hasNextPage, =TvzS%U
everyPage, totalPage, tCF&OOI4`
currentPage, ~=r^3nZR/J
donw(_=
beginIndex); Y]`.InG@
} 6qvp*35Cx
E9!N>0
privatestaticint getEveryPage(int everyPage){ s=I'e/"7
return everyPage == 0 ? 10 : everyPage; Z^KA
} bBxw#_3A?E
G`=r^$.3WB
privatestaticint getCurrentPage(int currentPage){ eDO!^.<5
return currentPage == 0 ? 1 : currentPage; -5G)?J/*
} }}{!u0N},V
6"j_iB
privatestaticint getBeginIndex(int everyPage, int {.e=qQ%P5)
:q##fG'm/
currentPage){ iP~,n8W
return(currentPage - 1) * everyPage; *y[PNqyd
} %T`U^Pnr
qd@&59zSh
privatestaticint getTotalPage(int everyPage, int )4Q?aMm
5__+_hO
;3
totalRecords){
ug 7o>PX
int totalPage = 0; XdEPbD-
Vsq8H}K
if(totalRecords % everyPage == 0) DmqX"x%P
totalPage = totalRecords / everyPage; zRl~^~sY
else <g8K})P
totalPage = totalRecords / everyPage + 1 ; +';>=hha
"L"150Ih
return totalPage; {43yb_B(
} i?;r7>
g8;D/
privatestaticboolean hasPrePage(int currentPage){ wz8PtfZ
return currentPage == 1 ? false : true; }$su4A@0
} OV CR0
)(Iy<Y?#
privatestaticboolean hasNextPage(int currentPage, Tm]nEl)_
,0$)yZ3*3,
int totalPage){ R/b4NGW@
return currentPage == totalPage || totalPage == J a,d3K
#>;FUZuJr
0 ? false : true; ]J1S#Q5'
} "T/>d%O1b
lw%?z/HDf
8am`6;O:!
} e>'H
IO
`A%^UCd
9e!NOl\_;.
5@osnf?
{WN(&eax
上面的这两个对象与具体的业务逻辑无关,可以独立和抽象。 -!qu"A:
w6|9|f/
面对一个具体的业务逻辑:分页查询出User,每页10个结果。具体 6x{<e4<n
Tz&Y]#h_
做法如下: wy1X\PJjH
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 }SyxPXs
yQS+P8x&|]
的信息,和一个结果集List: yWPIIWHx!
java代码: EER`?Sa(
S|AM9*k9
"pxzntY|
/*Created on 2005-6-13*/ UsVMoX^
package com.adt.bo; #eP
LOR&q
2B~wHv
import java.util.List; lkIn%=Z
"kMzmo=Pv5
import org.flyware.util.page.Page; -php6$|
Ths_CKwgWY
/** / RZR}
* @author Joa %9C@ Xl
*/ B=L&bx
publicclass Result { j'%4{n
v'2[[u{7*
private Page page; 4\t1mocCSN
W~T}@T:EN
private List content; =%)+%[wv
!{,F~i9
/** EC&@I+'8Q
* The default constructor ;|%dY{L-
*/ n#Dv2 E=6
public Result(){ gB,G.QM*6
super(); S&nxok`e^
} ewNz%_2
Id'RL2Kq*&
/** T<yP* b2E
* The constructor using fields l|`9:H
* l2%bF8]z
* @param page ]-o"}"3Ef
* @param content eg+!*>GaX
*/ "ceed)(:
public Result(Page page, List content){ I&9S;I$
this.page = page; _&3<6$}i"
this.content = content; |iFVh$N
} ~`;rNnOT3
u),Qa=Wp
/** TjK{9A
* @return Returns the content. YKZrEP4^
*/ _#e&t"@GS
publicList getContent(){ v
]Sl<%ry
return content; gJt`?8t
} 6~:Sgt nU
Rx36?/
/** }G46g#_6d>
* @return Returns the page. Q "r_!f
*/ `?\tUO2_T
public Page getPage(){ Wm'QP4`
return page; ^62|d
} &}mw'_ I
(oK^c-x
/** aFiCZHohw
* @param content Vpfp}pL
* The content to set. xynw8;Y,
*/ 0XwHP{XaO
public void setContent(List content){ :A46~UA!$
this.content = content; :^ i9]
} '+'CbWgY
<<9Va.
/** !
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* @param page I[MgIr^
* The page to set. h 6G/O`:
*/ >>[/UFC)n
publicvoid setPage(Page page){ jcCoan
this.page = page; \hO2p6
} O/%< }3Sq
} fqz28aHh
hli|B+:m"
Oh.ZPG=
*x~xWg9^
1RLY $M
2. 编写业务逻辑接口,并实现它(UserManager, #yseiVm;
(LvS
:?T}
UserManagerImpl) $ZPX]2D4B#
java代码: ;wiao(t>4N
~pk(L[G
HWns.[
/*Created on 2005-7-15*/ V=I"-k}RL
package com.adt.service; HC {XX>F^
+^aFs S
import net.sf.hibernate.HibernateException; $VG*q
<[aDo%,A
import org.flyware.util.page.Page; wmNHT _
Yw3oJf&
import com.adt.bo.Result; |9xI_(+{kP
z_;3H,z`
/** )|j[uh6wo
* @author Joa v4Zb?
Yb
*/ }g+;y
publicinterface UserManager { :qhpL-ER
@ufo$?D
public Result listUser(Page page)throws [@<sFP;g
>$67 7
HibernateException; DVZdClAL
>!e<}84b
} c97{Pu
uaw~r2
?[TfpAtQ`
dCYCHHHF
Zt
-1h{7
java代码: dBsX*}C
h[KvhbD3
7T``-:`[
/*Created on 2005-7-15*/ *F^wtH`
package com.adt.service.impl; l@j.hTO<
EqiFy"H
import java.util.List; O-vGyNxP|
sML=5=otx
import net.sf.hibernate.HibernateException; ,ea^,H6
MfF~8
import org.flyware.util.page.Page; #$~ba%t9%
import org.flyware.util.page.PageUtil; r'LVa6e"N
'[|+aJ
import com.adt.bo.Result; zr v]
import com.adt.dao.UserDAO; )"(] Lf's
import com.adt.exception.ObjectNotFoundException; ql{(Lf$
import com.adt.service.UserManager; Jo(`zuLJ
0X8t>#uF
/**
>DM44
* @author Joa V~DMtB7
*/ Xm2\0=v5;
publicclass UserManagerImpl implements UserManager { 8VG!TpX/B
uf<@ruN
private UserDAO userDAO; MvLs%GE%
t9
\x%=
/** "eWk#/
* @param userDAO The userDAO to set.
@4d)R
*/ i!2TH~zl
publicvoid setUserDAO(UserDAO userDAO){ oeSN9O
this.userDAO = userDAO; qL6c`(0
} "@@I!RwA
[97:4.
/* (non-Javadoc) A,-6|&F
* @see com.adt.service.UserManager#listUser ;a=w5,h:
?PA$Ur21lw
(org.flyware.util.page.Page) A,CW_
*/ f|A
riM
public Result listUser(Page page)throws 75nNh~?)\
Jk|Q`h
HibernateException, ObjectNotFoundException { NqHy%'R
int totalRecords = userDAO.getUserCount(); {_N,=DQ!
if(totalRecords == 0) 8bK|:B#6,
throw new ObjectNotFoundException :a8 YV!X
OV2-8ERS
("userNotExist"); t-
u VZ!`\
page = PageUtil.createPage(page, totalRecords); (2ur5uk+
List users = userDAO.getUserByPage(page); H~eRT1
returnnew Result(page, users);
vr#+0:|
} -&