Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 R3_;!/1
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 |uFb(kL[U
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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 $ta"Ug.z
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 _z]v;Q
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。 |iSwG=&
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分页支持类: 1GR|$E
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java代码: mrsN@(X0
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package com.javaeye.common.util; P%[{ 'u
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import java.util.List; qa:muW
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publicclass PaginationSupport { 6eB~S)Ko
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publicfinalstaticint PAGESIZE = 30; bTYR=^9
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privateint pageSize = PAGESIZE; 5``usn/&Kj
{ }Afah
privateList items; QRdtr
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privateint totalCount; ow,! 7|m
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privateint[] indexes = newint[0]; N-p||u
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privateint startIndex = 0; p4uObK,
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public PaginationSupport(List items, int {c
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totalCount){ $G/p[JG6-
setPageSize(PAGESIZE); b9Eb"
setTotalCount(totalCount); _lH:%E*
setItems(items); 70R_O&f-k
setStartIndex(0); (G>g0(;D-
} &xC5Mecb*
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public PaginationSupport(List items, int \$,;@H5I^
&]KA%Db2
totalCount, int startIndex){ oSR;Im<2
setPageSize(PAGESIZE); y]k{u\2A
setTotalCount(totalCount); o8A(Cg}
setItems(items); *MCkezW7{
setStartIndex(startIndex); 6D4u?P,
} IV`+B<3
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public PaginationSupport(List items, int >/-Bg:
*@ S+J$
totalCount, int pageSize, int startIndex){ 6I5LZ^/ G9
setPageSize(pageSize); YO.+06X
setTotalCount(totalCount); K>2 Bz&)
setItems(items); E@@XWU21;N
setStartIndex(startIndex); 7*Gg#XQ>(
} EBUCG"e
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publicList getItems(){ {%Q+Pzl.
return items; <)oW
} ?*f2P T?`
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publicvoid setItems(List items){ #ChF{mh
this.items = items; D'_w
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} J}VG4}L
@$|bMH*1:
publicint getPageSize(){ E^Z?X2Z
return pageSize; #<R6!"TNoz
} KA9v?_@{ F
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publicvoid setPageSize(int pageSize){ /V>yF&p
this.pageSize = pageSize; jH2_Ekgc;_
} (5=B^9{R
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publicint getTotalCount(){ U;Q?Rh-W
return totalCount; mA\}zLw+r9
} -j}zr yG-
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publicvoid setTotalCount(int totalCount){ ZcrFzi
if(totalCount > 0){ ys}I~MK -
this.totalCount = totalCount; vqJq=\ .m
int count = totalCount / = _/XFN
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pageSize; Uf\U~wM<
if(totalCount % pageSize > 0) 43BqNQ0
count++; :sJQ r._L
indexes = newint[count]; T5+9#
for(int i = 0; i < count; i++){ }Gh95HwE
indexes = pageSize * j4]y(AA
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i; !,cfA';S
} a/lTQj]A
}else{ q3/ 0xN+?
this.totalCount = 0; 7) Qq
} yey]#M[y
} ")eY{C
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publicint[] getIndexes(){ )cBO_
return indexes; 18G=j@k7
} k[]2S8K2
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publicvoid setIndexes(int[] indexes){ k[5:]5lp+
this.indexes = indexes; YaAOP'p
} FZ=xy[q]~
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publicint getStartIndex(){ -5#cfi4^*
return startIndex; tk!5"`9N
} x^)W}p"
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publicvoid setStartIndex(int startIndex){ 7&vDx=W
if(totalCount <= 0) O{ |Ug~
this.startIndex = 0; o!W(
elseif(startIndex >= totalCount) CK(`]-q>,
this.startIndex = indexes sTw+.m{F
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[indexes.length - 1]; O*ER3
elseif(startIndex < 0) ,d$D0w
this.startIndex = 0; V3q[$~9
else{ G]O5irsV
this.startIndex = indexes yVgHu#?PM
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[startIndex / pageSize]; 63Z^ k(
} >- U+o.o
} 1;eWnb(
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publicint getNextIndex(){ *g[MGyF"
int nextIndex = getStartIndex() + v:]z-zU
R$i-%3
pageSize; a6\`r^ @
if(nextIndex >= totalCount) Y]bS=*q
return getStartIndex(); z8cefD9F
else |G/WS0
return nextIndex; %BF,;(P
} /cZTj!M
rG3?Z^&R+
publicint getPreviousIndex(){ 61](a;Di
int previousIndex = getStartIndex() - C!)ZRuRv
6o4Y]C2W{1
pageSize; @;}vK=6L
if(previousIndex < 0) 4))N(m%3F
return0; {%c&T S@s
else O~mQ\GlW
return previousIndex; m~-O}i~)
} B_
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} ehTv@2b
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抽象业务类 aNP\Q23D
java代码: 7[I +1
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/** 2S-f5&o
* Created on 2005-7-12 AkCy
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*/ AG><5 }
package com.javaeye.common.business; 6sG5n7E-A
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import java.io.Serializable; pog
import java.util.List; WtO@Kf:3GH
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import org.hibernate.Criteria; #x`K4f)
import org.hibernate.HibernateException; kU,g=+2J
import org.hibernate.Session; vo(:g6$
import org.hibernate.criterion.DetachedCriteria; ?TJ4L/"(k6
import org.hibernate.criterion.Projections; >Y(JC#M;
import o`G6!
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org.springframework.orm.hibernate3.HibernateCallback; (,KzyR=*'
import =cO5Nt
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org.springframework.orm.hibernate3.support.HibernateDaoS c\/-*OYr<
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upport; TU':Rt
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import com.javaeye.common.util.PaginationSupport; oY0*2~sg
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public abstract class AbstractManager extends =CO) Q2
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j
HibernateDaoSupport { .)=*Yr M
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privateboolean cacheQueries = false; UBJYs{zz
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privateString queryCacheRegion; V'tR
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publicvoid setCacheQueries(boolean `\|tXl.
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cacheQueries){ %?, 7!|Ls
this.cacheQueries = cacheQueries;
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} <VSB!:ew
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publicvoid setQueryCacheRegion(String -agB ]j
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queryCacheRegion){ \ 4^zY'
this.queryCacheRegion = mZc; n.$U
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queryCacheRegion; [PB73q8
} dNY'uv&Y
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publicvoid save(finalObject entity){ ~cyKPg6
getHibernateTemplate().save(entity); CM$&XJzva
} kZo#Ny
Ph%ylS/T{
publicvoid persist(finalObject entity){ S7WHOr9XMV
getHibernateTemplate().save(entity); QlV(D<
} mtkZF{3Jx
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publicvoid update(finalObject entity){ <bo^u w
getHibernateTemplate().update(entity); j,;f#+O`g
} f0Q! lMv
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publicvoid delete(finalObject entity){ wr:W}Z@pL
getHibernateTemplate().delete(entity); 8(l0\R,%+z
} O`1!&XT{x
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publicObject load(finalClass entity, `GBJa k
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finalSerializable id){ V6](_w!
return getHibernateTemplate().load =,q/FY:
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(entity, id); <9"@<[[,
} Gey-8
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publicObject get(finalClass entity, H)E,([
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finalSerializable id){ =WI3#<vDG
return getHibernateTemplate().get Ye4
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(entity, id); x1`(Z|RJ
} ^GrSvl}v'
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publicList findAll(finalClass entity){ jg'"?KSU~
return getHibernateTemplate().find("from fKFD>u0%
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" + entity.getName()); @
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} EZ/_uj2&SN
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publicList findByNamedQuery(finalString PWvT C`?
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namedQuery){ S{bp'9]$y
return getHibernateTemplate \24'iYtqW
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().findByNamedQuery(namedQuery);
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} %La/E#
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publicList findByNamedQuery(finalString query, fj(WHL
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finalObject parameter){ /8`9SS
return getHibernateTemplate --TH6j"
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().findByNamedQuery(query, parameter); &WAU[{4W
} ;sf'"UnL
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publicList findByNamedQuery(finalString query, X"g,QqDD
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finalObject[] parameters){ y,Bj,zw
return getHibernateTemplate *kF/yN
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().findByNamedQuery(query, parameters); d/3&3>/
} 1y U!rEH
:18}$
publicList find(finalString query){ Yu&\a?]\2
return getHibernateTemplate().find 23p.g5hJi
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(query); rc%*g3ryLG
} Ssa/;O2
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publicList find(finalString query, finalObject F3Vvqt*2
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parameter){ ?&1%&?cg9
return getHibernateTemplate().find (lYC2i_b#
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(query, parameter); aOoWB^;6
} EmP2r*"rb
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public PaginationSupport findPageByCriteria Ai)Q(]
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(final DetachedCriteria detachedCriteria){ hiR+cPSF
return findPageByCriteria b_~KtMO
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); u<j.XPK
} !a5e{QG0
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public PaginationSupport findPageByCriteria 4=* ml}RP
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(final DetachedCriteria detachedCriteria, finalint SnO,-Rg
yAel4b/}
startIndex){ iqXsDgkr
return findPageByCriteria yaX%<KBa\
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(detachedCriteria, PaginationSupport.PAGESIZE, wLQM]$O
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startIndex); 9'p
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} \ $9n
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public PaginationSupport findPageByCriteria o`ODz[04
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(final DetachedCriteria detachedCriteria, finalint C9T-4o1
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(
pageSize, L w/ZKXDU2
finalint startIndex){ yucbEDO.
return(PaginationSupport) !P _'n
n8e}8.Bu
getHibernateTemplate().execute(new HibernateCallback(){ j%*<W> O
publicObject doInHibernate FkoN+\d
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(Session session)throws HibernateException { F8Z6Ss|v3
Criteria criteria = opxPK=kJ
}KrZ6cG9#
detachedCriteria.getExecutableCriteria(session); akA C^:F
int totalCount = {D&:^f
}*0*8~Q'5
((Integer) criteria.setProjection(Projections.rowCount nHL(v
;0++):30V
()).uniqueResult()).intValue(); >E(IkpZ
criteria.setProjection F(:]lM|
^`!EpO>k9
(null); JSiLG0
List items = Ucok&)7-
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criteria.setFirstResult(startIndex).setMaxResults ?x
&"EhA>
E)l@uPA'1
(pageSize).list(); Rs%6O|u7
PaginationSupport ps = ~x}=lK N
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new PaginationSupport(items, totalCount, pageSize, 7":0CU%%
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startIndex); $PNIuC?=
return ps; G@QZmuj&KH
} N;\by<snN
}, true); QFf lx
} ]"M 4fA
cB7=4:U
public List findAllByCriteria(final fXYg %
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DetachedCriteria detachedCriteria){ # 1,(I
return(List) getHibernateTemplate S\jN:o#b
?<slB>8
().execute(new HibernateCallback(){ U;4:F{3m
publicObject doInHibernate 0Q5ua`U
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(Session session)throws HibernateException { IXf@YV
Criteria criteria = =`rESb[
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detachedCriteria.getExecutableCriteria(session); {E`f(9r:
return criteria.list(); RxkcQL/Le
} /\_ s
}, true); T;}pMRd%
} "Gxf[6B
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public int getCountByCriteria(final M(S:&GOU
=2{ ^qvP
DetachedCriteria detachedCriteria){ pUr.<yc&u
Integer count = (Integer) c X553&
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getHibernateTemplate().execute(new HibernateCallback(){ o$YL\ <qp
publicObject doInHibernate e?G] fz
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(Session session)throws HibernateException { *A O/$K@Ma
Criteria criteria = 5o2;26c
1<
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detachedCriteria.getExecutableCriteria(session); oO>mGl36H
return UMw1&"0:
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criteria.setProjection(Projections.rowCount X'WbS
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()).uniqueResult(); Hc4]2pf
} H{`S/>)[
}, true); xO6)lVd
return count.intValue(); \
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} "wT[LA9\
} a%sr*`
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用户在web层构造查询条件detachedCriteria,和可选的 `$7j:<c=
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startIndex,调用业务bean的相应findByCriteria方法,返回一个 /A4zR
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PaginationSupport的实例ps。 NI\jGR.
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ps.getItems()得到已分页好的结果集 )&<BQIv9/
ps.getIndexes()得到分页索引的数组 B3]q*ERAo
ps.getTotalCount()得到总结果数 ~%B^`s
ps.getStartIndex()当前分页索引 YUat}-S
ps.getNextIndex()下一页索引 J"L+`i
ps.getPreviousIndex()上一页索引 >Q#_<IcI
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连续看了两篇robbin有关DetachedCriteria的介绍,感觉真的不错 iVLfAN @
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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 $rv&!/}]e
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一下代码重构了。 )" q$g&
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我把原本我的做法也提供出来供大家讨论吧: 'kf]l=i[n
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首先,为了实现分页查询,我封装了一个Page类: %{WS7(si
java代码: JwL}|o6
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/*Created on 2005-4-14*/ :3J,t//c
package org.flyware.util.page; ZgK[,<2
d
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/** }lt5!u~}
* @author Joa +sq'\Tbp
* :jlKj} 4A
*/ kVR_?ch{
publicclass Page { 5gYv CW&~
jR[VPm=
/** imply if the page has previous page */ ],#Xa.r
privateboolean hasPrePage; r#r L~Rsd}
;c p*]
/** imply if the page has next page */ 'c7C*6;a
privateboolean hasNextPage; 5]pvHc
#@FMH*?xX6
/** the number of every page */ Z0HfrK#oU
privateint everyPage; =?]H`T:
BdBwfH%:
/** the total page number */ @yp#k>
privateint totalPage; L/\s~*:M
0M=A,`qk
/** the number of current page */ n-zAkKM
privateint currentPage; {\zTE1X9
1T&NU
/** the begin index of the records by the current *\Z9=8yK
K#Ia19au5
query */ QS7<7+
privateint beginIndex; Qw>~]d,Z
Zp8\n:
S$#"bK/p^
/** The default constructor */ S7pf
QF
public Page(){ c8z6-6`i0
M3q%(!2
} O-P'Ff"}t
;] v{3m
/** construct the page by everyPage +;r1AR1)x
* @param everyPage x[u4>f
* */ D6+^Qmu"p
public Page(int everyPage){ YV%y
KD
this.everyPage = everyPage; pLYLHS`*
} L%S(z)xX3
arK(dg~S
/** The whole constructor */ /{6&99SJcc
public Page(boolean hasPrePage, boolean hasNextPage, CFK{.{d]B
_uXb 9
c,>y1%V*S{
int everyPage, int totalPage, Ms<v81z5T
int currentPage, int beginIndex){ !NqLBrcv 0
this.hasPrePage = hasPrePage; M!i["($_
this.hasNextPage = hasNextPage; u.yYE,9
this.everyPage = everyPage; g)dKXsy(F
this.totalPage = totalPage; Xsk/U++
this.currentPage = currentPage; q$7w?(Lk
this.beginIndex = beginIndex; xe"A;6H
} |@W|nbAfX
Xr."C(`w
/** .(^%M
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* @return *epK17i=
* Returns the beginIndex. y$Fk0s*>
*/ Sq]VtQ(
publicint getBeginIndex(){ !L[$t~z
return beginIndex; bblEZ%
} we0haK
/&N\#;kK?b
/** RH9P$;.7
* @param beginIndex XqLR2d
* The beginIndex to set. |.OS7Gt?
*/ rF$S
publicvoid setBeginIndex(int beginIndex){ h e=A%s
this.beginIndex = beginIndex; lT?Vt`==~M
} (%j V[Q
g#Z7ReMw
/** q*K[?
* @return v4qpE!W27~
* Returns the currentPage. i"0*)$
hW
*/ L)i6UAo
publicint getCurrentPage(){ B='(0Uxy-
return currentPage; }S"qU]>8a
} hbe";(
_WGWU7h
/** vL#I+_ 2
* @param currentPage @.,Mn#
* The currentPage to set. oj=%< a
*/ >u\'k+=
publicvoid setCurrentPage(int currentPage){ ,Yn$X
this.currentPage = currentPage; >Qqxn*O
} !'C8sNs
n5 <B*
/** !
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* @return 4d_Az'7`4
* Returns the everyPage. W!+eJ!Da
*/ d(j
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publicint getEveryPage(){ [{0/'+;9
return everyPage; >}bkX
6c5
} |['SiO$)
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/** TyvUdU
* @param everyPage Qe0?n
* The everyPage to set. Xyu0np;@
*/ y: ]
publicvoid setEveryPage(int everyPage){ |.b&\
this.everyPage = everyPage; nf-6[dg
} Y>{%,d#s_
E#A}2|7,g
/** [s+FX5' K
* @return *Z+U}QhHD6
* Returns the hasNextPage.
,
{}S<^?]
*/ |kF"p~s
publicboolean getHasNextPage(){ 5s%FHa
return hasNextPage; 2J Wp5
} /!_FE+
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/** )h]tKYx
* @param hasNextPage f[*g8p
* The hasNextPage to set. #3O$B*gV6
*/ &gP1=P,!
publicvoid setHasNextPage(boolean hasNextPage){ ;Za^).=
this.hasNextPage = hasNextPage; sHPlNwyy
} +f}w+
u`XZtF<vf
/** gk}.LE
* @return LWxP}? =
* Returns the hasPrePage. S#0C^
*/ cpH*!*S
publicboolean getHasPrePage(){ M=fhRCUB
return hasPrePage; Abpzf\F
} kaRjv
*c(J4
/** s]HJcgI
* @param hasPrePage Gx|/
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* The hasPrePage to set. #4AqWyp#f
*/ ivSpi?
publicvoid setHasPrePage(boolean hasPrePage){ .G}$jO}
this.hasPrePage = hasPrePage; vos-[$
} ZSB;4 ?:h
fc<,kRp
/** #bb$Icmtk
* @return Returns the totalPage. j'XND`3
* w[uwhd
*/ uZP(-}
publicint getTotalPage(){ Qqd +=mgc
return totalPage; #UnGU,J
} 5r0Sl89J
!MOcF5M
/** PkOtg[Z
* @param totalPage ZC &~InN
* The totalPage to set. 9? |m ^
*/ .4!wp&
publicvoid setTotalPage(int totalPage){ ^fU,9
this.totalPage = totalPage; 618bbftx{
} :io~{a#.2\
t&C0V|s79$
} m xy=3cUi
r3YfY\
QaOFl`i
kqCUr|M.P
m.U&O=]5
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 V^\b"1X7N
rD>q/,X=\
个PageUtil,负责对Page对象进行构造: /b{Ufo3v
java代码: i;67<f}-
=I$:-[(
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/*Created on 2005-4-14*/ ^56#{~%^?
package org.flyware.util.page; >SS97 9
&qV_|f;
import org.apache.commons.logging.Log; ++}#pl8e
import org.apache.commons.logging.LogFactory; LfsOGC
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/** MENrP5AL
* @author Joa \qbEC.-K
* "; ?^gA
*/ XE|"n
publicclass PageUtil { tTe:Oq
k")3R}mX
privatestaticfinal Log logger = LogFactory.getLog )1&,khd/u
FFc?Av?_
(PageUtil.class); z\<gm$1CB
$t>ow~Xi
/** rzKn5Z
* Use the origin page to create a new page ,oj)`?Vh
* @param page =1j`VJU9
* @param totalRecords jE$]Z(Ab
* @return =l$qwcfbo
*/ 2J7JEv|
publicstatic Page createPage(Page page, int &wB?ks
WoWBZ;+U
totalRecords){ U&6f:IV
return createPage(page.getEveryPage(), q%FXox~b
7=4V1FS6i
page.getCurrentPage(), totalRecords); j,g.Eo
} E"%G@,|3*
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/** YfH+kDT
* the basic page utils not including exception 1L.yh U\
+C(/.X
Kz%
handler E2|c;{c
* @param everyPage W.<I:q`eO
* @param currentPage J]Qbg7|
* @param totalRecords [M:BJ%*
* @return page wEIAU
*/ 7A>glZ/x
publicstatic Page createPage(int everyPage, int _+nlm5
o
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currentPage, int totalRecords){ b.v^:M
everyPage = getEveryPage(everyPage); 9,Ug
currentPage = getCurrentPage(currentPage); (2%z9W
int beginIndex = getBeginIndex(everyPage, 86f/R
c
yl~h
`b4
currentPage); $g)X,iQu
int totalPage = getTotalPage(everyPage, qgsKbsl
4N{^niq7
totalRecords); b~m|mb$
boolean hasNextPage = hasNextPage(currentPage, %-[U;pJe;
AY%Y,<a
totalPage); Og<UW^VR
boolean hasPrePage = hasPrePage(currentPage); MXuiQ;./
ESv&x6H
returnnew Page(hasPrePage, hasNextPage, wz5*?[4
everyPage, totalPage, 0t}&32lL&
currentPage, Amvl/bO
3+ r8yiY
beginIndex); Uzd\#edxJ
} MQGR-WV=5
mkt%|Kb.
privatestaticint getEveryPage(int everyPage){ /bv4/P
return everyPage == 0 ? 10 : everyPage; {AqPQeNgz
} "4qv
yVOE
6}e"$Ee}9
privatestaticint getCurrentPage(int currentPage){ m-!Uy$yM
return currentPage == 0 ? 1 : currentPage; @C6.~OiP
} ~@bh[o~rF
Zae$M0)
privatestaticint getBeginIndex(int everyPage, int HWT^u$a"
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currentPage){ Gd%E337d
return(currentPage - 1) * everyPage; nc.X+dx:
} ~uz 4
2:l8RH!Y
privatestaticint getTotalPage(int everyPage, int KZSvT{
[ !#<nY/C
totalRecords){ {QTnVS't 0
int totalPage = 0; 4&([<gyR<
!5K9L(gqb
if(totalRecords % everyPage == 0) -V)DKf"f
totalPage = totalRecords / everyPage; -:o4|&g<*
else P ||:?3IH
totalPage = totalRecords / everyPage + 1 ; Do5)ilt
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return totalPage; K0O&-v0"1
} lZ9rB^!
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privatestaticboolean hasPrePage(int currentPage){ 7B,axkr
return currentPage == 1 ? false : true; &udlt//^%
} *
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privatestaticboolean hasNextPage(int currentPage, Q)s[ls
^p433
int totalPage){ Q4,!N(>D
return currentPage == totalPage || totalPage == WD7IF+v
qx~-(|s`H
0 ? false : true; >FabmIcC
} K`?",G?_
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} %nfaU~IqK
kq kj.#u
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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。 (}u2) 9
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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 _c4kj
93*MY7j}
做法如下: OF)G2>t
1. 编写一个通用的结果存储类Result,这个类包含一个Page对象 ;L458fYs
T!*lTzNHm
的信息,和一个结果集List: -6OgM}
java代码: +(-L
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kgV_*0^
/*Created on 2005-6-13*/ eJJD'Z
package com.adt.bo; rv\m0*\<
N1 }#6YNw
import java.util.List; ;5bzXW#U
m["`Op4
import org.flyware.util.page.Page; V_T.#"C4=z
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A)&
/** zMf.
* @author Joa vO#=]J8`
*/ D!-
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publicclass Result { dC7YVs_,#
#ONad0T;
private Page page; .W#-Cl&n8
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private List content; S}Q/CT?au
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/** U$fh ~w<[
* The default constructor msyC."j0jU
*/ qBKRm0<W
public Result(){ 1'[RrJ$Q
super(); 0#AS>K5
} F?wfh7q
/7
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/** d@a FW
* The constructor using fields *,:>EcDr
* q*|H*sS
* @param page Sd!!1as
* @param content #JFTD[1
*/ 3$u3ssOL
public Result(Page page, List content){ `*J;4Ju@
this.page = page; \<}4D\qz
this.content = content; v\3:R,|'
} arR9uxP
D+Ke)-/
/** 6fozc2h@x%
* @return Returns the content. &p)]Cl/`
*/ xpWx6
publicList getContent(){ X2?
^t]-N
return content; 7<<-\7`
} 5,I|beM
[\ M$a|K
/** s[
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* @return Returns the page. )AxgKBW
*/ F%t_9S,)O
public Page getPage(){ ET_a>]<mv
return page; ] rP^
} N:j,9p0,
HH-A\#6J
/** "0Wi-52=V
* @param content ! z^%$;p
* The content to set. J4yL"iMt
*/ Ry@QJn I<
public void setContent(List content){ o7/S'Haxc]
this.content = content; E<j}"W$a
} p(jY2&g
pSjJ u D
/** 0]3 ,0s $}
* @param page hV(>}hb
* The page to set. |Va*=@&6J
*/ U7)#9qS4
publicvoid setPage(Page page){ gn2*'_V~3
this.page = page; ,N[N;Uoj
} otA59 ;Z
} -YXNB[C
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KT 3W>/#E
gRnn}LL^
,g.*Mx`-
2. 编写业务逻辑接口,并实现它(UserManager, \~sc6ho
|[/<[@\''
UserManagerImpl) DChqcdx~~
java代码: !e8OC9_x
wLF;nzv
3pxZk%
/*Created on 2005-7-15*/ ;_o1{?~
package com.adt.service; y9K U&