1．Hibernate默认连接池
EPeKg{w "06t"u<% <?xml version='1.0' encoding='UTF-8'?>
`>ppDQaS)W H!SFSgAu <!DOCTYPE hibernate-configuration
- t#YL *G rYB6MT PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
V[DiN~H B|WM;Y^ "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
H@, h$$ ^mwS6W H6 pW&K=,7| <hibernate-configuration>
qAI %6d T'6MAxEZUq zTBf.A;e7 <session-factory >
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gk w)# <!?JDBC驱动程序-->
KBC?SxJSJc trx y3k; <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
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~2 ^(F@ #zN} <!-- 连接数据库的URL-->
76 oJCNY s5 s'[< <property name="connection.url">
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"K< jdbc:mysql://localhost:3306/schoolproject
i0}f@pCB?X E .N@qMn~ </property>
X+2 uM+ gwGw <property name="connection.useUnicode">true</property>
&9Kni/ B6k c9XG <property name="connection.characterEncoding">UTF-8</property>
}INj~d<: TJ_Wze-lQ gpw,b V <!--连接的登录名-->
%6.WGuO rdH3! <property name="connection.username">root</property>
m?O~( 6k@C J?C#'2 /
n58yR -" <!?登录密码-->
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v?HD:j !!k ^M"e2 <property name="connection.password"></property>
p>N8g#G [$X^r<|P @ emSky-{$u <!--是否将运行期生成的SQL输出到日志以供调试-->
(b;Kl1Ql] z C,c9b <property name="show_sql">true</property>
X $2f)3 zJ6""38Pr %?hvN <!--指定连接的语言-->
y{KYR) q6PG=9d0B <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
S4U}u l KAJR.YNm 5 ) q_Aro <!--映射Student这个资源-->
^c<8|lK L@ {E[t(Ig <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
s*Nb=v.e9 VUi> ]v/e )+Y"4?z~ </session-factory>
=PF2p'.o D7r&z ? s0O]vDTR,H </hibernate-configuration>
[ $5u:* 9Nw&l@ n$ rgJ 2．C3P0连接配置
Xub*i^(] b:5-0uxjs <?xml version='1.0' encoding='UTF-8'?>
jM}(?^@ n)0M1o# <!DOCTYPE hibernate-configuration
|}? H$d j{j5TvsrY PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
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Q=6 1.lP6 "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
_N {4Rs0 &]h`kvtBC d6a3\f <hibernate-configuration>
z/]]u.UP $ 1$0M M1]}yTCd <session-factory >
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L =&I f K6[ p& "} "/d( <!?JDBC驱动程序-->
qSGM6kb ! 1Hs;K <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
?f N6_x2e3 's.e"F# NB4 Q,iq$ <!-- 连接数据库的URL-->
UZdGV?o ? K {kd:pr <property name="connection.url">
$ q*a}d[Q 80=LT-%# jdbc:mysql://localhost:3306/schoolproject
t`=" 2$NO "IB36/9 </property>
LZb<-v K"y 3%+!qm <property name="connection.useUnicode">true</property>
{P_i5V? \%&A? D <property name="connection.characterEncoding">UTF-8</property>
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*;i]owV p+8o'dl8= U)xebU.!S <!--连接的登录名-->
}h sNsQ DZ @B9<Zz{ <property name="connection.username">root</property>
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s^ 7c <(@Z#%O9) <!--登录密码-->
i\_LLXc D w/vXyZ <property name="connection.password"></property>
Ims? +HPcv u?1 R `Fgne$4 <!-- C3P0连接池设定-->
Ph%{h" SXP(C^?C <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider
sE' c$H b*(K;`9)B </property>
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<property name="hibernate.c3p0.max_size">20</property>
z{|0W!nHJ HE35QH@/` <property name="hibernate.c3p0.min_size">5</property>
}S8a R:' %*szB$ [3 <property name="hibernate.c3p0.timeout">120</property>
4Z>gK ( 0TaI"/ai <property name="hibernate.c3p0.max_statements">100</property>
*RxJ8.G 4BUG\~eI3 <property name="hibernate.c3p0.idle_test_period">120</property>
"AZ|u#0P HHZw-/ s,% <property name="hibernate.c3p0.acquire_increment">2</property>
xVw@pR ; ]\KVA)\ ^8EW/$k <!--是否将运行期生成的SQL输出到日志以供调试-->
xxyc^\$ $cK}Tl q <property name="show_sql">true</property>
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6 #Lpw 8b6 <!--指定连接的语言-->
f] #\&" u178vby;l <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
Ovc9x\N JH{/0x#+ "5L?RkFi\ <!--映射Student这个资源-->
>t.Lc. {?`7D:]`^ <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
=y-yHRC7 L /:^;j`c \wD/TLS} </session-factory>
\?]U*)B. r jan} }7Dly 'KIT^k0"Ih </hibernate-configuration>
rbnAC*y8'L X5YOxMq ij!d-eM/b |,p"<a!+{w 3．proxool连接池
W M` 3QJb Ij7P -5=< (1) 先写proxool的配置文件，文件名：proxool.xml（一般放在与hibernate.cfg.xml文件在同一个目录中）本例配置的是MYSQL数据库，数据库的名字为schoolproject
OA*O = pDZewb&cA bw zx_F/ <?xml version="1.0" encoding="UTF-8"?>
uDie205 ~;3#MAG <!-- the proxool configuration can be embedded within your own application's.
I)V=$r{ 'o6}g p) Anything outside the "proxool" tag is ignored. -->
aSvv(iV b"A, q B;ek a[xU <something-else-entirely>
ppRmC,0f^ ]5jS6 @Vl* <proxool>
":$4 /b6 q4[8\Ua <!--连接池的别名-->
>2znn&g Z sko7,& <alias>DBPool</alias>
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xcr2| a5pl/d <!--proxool只能管理由自己产生的连接-->
vSR&>Q%X ;:D-}t; <driver-url>
;.uYWP|9 #+1|O;PB# jdbc:mysql://localhost:3306/schoolproject?useUnicode=true&characterEncoding=UTF8
-n.m "O3 yuZLs H </driver-url>
u -t= M] |- x-CSN <!?JDBC驱动程序-->
n"htx|v OW@%H;b <driver-class>com.mysql.jdbc.Driver</driver-class>
Jz` j N~ BDI@h%tJb: <driver-properties>
:oZ<[#p"* 6p4BsWPx <property name="user" value="root"/>
2.aCo, Kb; QcL@3QC <property name="password" value=""/>
U0_)J1Yp D_d>A+ </driver-properties>
`.MZ,Xhqi" (U.Go/A#wE ;|WUbc6&g <!-- proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回
OM[MRZEh G D{N8q^Cs9 收,超时的销毁-->
GK}52,NM M!J7Vj?Ps <house-keeping-sleep-time>90000</house-keeping-sleep-time>
LG&BWs ! W_2 ;j)i Qp:I[:Lr; <!-- 指因未有空闲连接可以分配而在队列中等候的最大请求数,超过这个请求数的
8TFQ%jv 3[ [oAp 用户连接就不会被接受-->
"@&TC"YG0 5`.CzQVb <maximum-new-connections>20</maximum-new-connections>
A 0Mjk t Ly:F*1i !d N[9} <!-- 最少保持的空闲连接数-->
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uf YIf <prototype-count>5</prototype-count>
_p*9LsN$L 49MEGl;K0\ BX?DI-o^h <!-- 允许最大连接数,超过了这个连接，再有请求时，就排在队列中等候，最大的
L[Vk 6e |Mq+QDTTw~ 等待请求数由maximum-new-connections决定-->
i=EOk}R rM7qBt <maximum-connection-count>100</maximum-connection-count>
p/<DR | 13s/m& wD9K\%jIr! <!-- 最小连接数-->
X`D2w: ,R[$S"]!SH <minimum-connection-count>10</minimum-connection-count>
Y*c]C ;%= 0VNLhM(LM =K`. $R </proxool>
dQj/ Sr 4`,(*igEv </something-else-entirely>
|R9Lben', bTD?uX!^@ z+"$G (2)配置hibernate.cfg.xml文件
d)AYY}pw Cb ;6yE)!Z <?xml version='1.0' encoding='UTF-8'?>
-%` ~3*L D;Qx 9^. <!DOCTYPE hibernate-configuration
fa/S!%}fO Fv~lasW[ PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
! UT'4 Fs qi,) l*?f "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
_<S!tW zq} ;{~u( ,sL'T[tuiU <hibernate-configuration>
=d{ 6=2Pt DhM= q ?J:w,,4m <session-factory >
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; I0 }.! H a!,9{ T <property name="hibernate.connection.provider_class">
\L*%?~ dtR"5TL<~} org.hibernate.connection.ProxoolConnectionProvider
=<n ]T; 9\_s&p=:. </property>
# ?2*I2_ tRo Sq;VrS <property name="hibernate.proxool.pool_alias">DBPool</property>
o,rF 15 Q#p)?:o/ <property name="hibernate.proxool.xml">proxoolconf.xml</property>
vvxxwZa=O pQa51 nc /!H24[tnk1 <!--是否将运行期生成的SQL输出到日志以供调试-->
,XT,t[w `jE[Xt"@ <property name="show_sql">true</property>
~ wa4kS<> <X8Urum |
1B0 <!--指定连接的语言-->
^?lpY{aa ~}_^$l8#-Q <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
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{X R ]KFh 1 /!Rva" <!--映射Student这个资源-->
wiN0|h>, 8 4(Jo_9 <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
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r </session-factory>
s-CAo~, Gld~GyB\k 1clzDwW </hibernate-configuration>
XC3)#D#HGh +-!3ruwSn !RKuEg4hQ (1) hibernate.connection.provider_class定义Hibernate的连接加载类，这里Proxool连接池是用这个，不同的连接池有不同的加载类，可以查阅Hibernate文档获取相关信息
li*S^uSF 2* g2UP (2) hibernate.proxool.pool_alias这里就是用我们上面提到的连接池的别名
gN/!w: .BP d06y (3) hibernate.proxool.xml是向Hibernate声明连接池的配置文件位置，可以用相对或绝对路径，用相对路径时要注意一定在要Path范围内！不然会抛出异常。
\92M\S q{9vY:`[ (4) dialect是声明ＳＱＬ语句的方言
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:a*>PMTn (5) show_sql定义是否显示Hibernate生成的ＳＱＬ语言，一般在调试阶段设为true,完成后再改成false，这样有利于调试。
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9tpyrGv (6) <mapping >资源文件映射
ika*w E]#;K-j < J^5l0)q 4． JNDI连接池，数据源已经由应用服务配置好(如Web服务器)，Hibernate需要做的只是通过JNDI名查找到此数据源。应用服务器将连接池对外显示为JNDI绑定数据源，它是javax.jdbc.Datasource类的一个实例。只要配置一个Hibernate文件，如：
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\bD< L\4rvZa hibernate.connection.datasource=java:/comp/env/jdbc/schoolproject //JNDI名
8O^x~[sQ >M 5}L< hibernate.transaction.factory_class = org.hibernate.transaction.JTATransactionFactory
'
#K@%P J^"_H:1 [ hibernate.transaction.manager_loopup_class =
*9n[ #2sM< IgbuMEfL org.hibernate.transaction.JBossTransactionManagerLookup
'fn}I0Vc t]&.'n, hibernate.dialect=org.hibernate.dialect.MySQLDialect
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