1．Hibernate默认连接池
XFl 6M~ c dO'(2 J8 <?xml version='1.0' encoding='UTF-8'?>
{: /}NpA$ Txu/{ M, <!DOCTYPE hibernate-configuration
6K^ #?Bn; BPrt'Nc PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
{ 6il`>=C * 4'"2 " "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
{7[Ox<Ho Jy)/%p~ O.? JmE <hibernate-configuration>
rI\FI0zIp_ {}9a6.V;}
3";q[&F9y <session-factory >
MgZ/ (X E 4#D,?eA 7 Mx}gN:Wt <!?JDBC驱动程序-->
5P2K5,o|n~ &>O+}>lr9 <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
\bXa&Lq =;L|gtH" 4W75T2q# <!-- 连接数据库的URL-->
\z$= K j 7B!h| <property name="connection.url">
)%TmAaj9d F ,kZU$ jdbc:mysql://localhost:3306/schoolproject
F59 TZI W9&=xs6 </property>
}e1ZbmW &]Tmxh( <property name="connection.useUnicode">true</property>
l1I#QB@5n WJi]t9 3 <property name="connection.characterEncoding">UTF-8</property>
"+c-pO`Wg 4g/dP ^ mpyt5 #f <!--连接的登录名-->
y_)FA"IkE Ry&6p>- <property name="connection.username">root</property>
Wwo0%< 2y e-;}366 } !WlH'y-I <!?登录密码-->
6Wn1{v0 4+ n\k <property name="connection.password"></property>
;uW FHc5@B i b m4fa pH ;%ELZ <!--是否将运行期生成的SQL输出到日志以供调试-->
/r 5eWR1G y =@N|f! <property name="show_sql">true</property>
4H/OBR SbZ6t$" )b)z m2; <!--指定连接的语言-->
/v }`l *8q.YuZ <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
+ZYn? #IQ !D6]JPX ! -bB559Nv <!--映射Student这个资源-->
2wn2.\v M `cO:< ^% <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
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kAx4fE[c </session-factory>
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M|-)GvR$J ICCc./l| </hibernate-configuration>
M5B# TAybC KoY F] CTK;dM'uQ 2．C3P0连接配置
INf& 4!&h sLFl!jX <?xml version='1.0' encoding='UTF-8'?>
Xj*Wu_ hZ3bVi)L\ <!DOCTYPE hibernate-configuration
E`q_bn #$vEGY}1 PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
8L XHk l :gT4K-O j "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
E7hhew z Dp 2g) Z)!C'c b <hibernate-configuration>
J4utIGF :N@^?q{b z#N@ 0R <session-factory >
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9j@N77 ^8tEach |{;G2G1[ <!?JDBC驱动程序-->
s{++w5s :,^gj <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
K,]=6 Rj c,22*.V/ E]6
6]+;0_ <!-- 连接数据库的URL-->
V :eD]zq5 =43auFY-P <property name="connection.url">
@o^Ww ; jP Xs jdbc:mysql://localhost:3306/schoolproject
e )ZUO_Q$ A Gno6g </property>
BVm0{*-[| DlT{` <property name="connection.useUnicode">true</property>
Mtv?:q BY*Q_ Et <property name="connection.characterEncoding">UTF-8</property>
|%wX*z af %\DX #. GfG|&VNlz <!--连接的登录名-->
'S~5"6r ~
1 pr~ <property name="connection.username">root</property>
(t.Nk[ x"(KBEK~ *VeRVaBl <!--登录密码-->
]k(]qZ d3Rw!slIq <property name="connection.password"></property>
% nIf)/2g AS,%RN^. ;=@0'xPEa- <!-- C3P0连接池设定-->
-8Xf0_ +#By* ;BJ <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider
vy/-wP|1 :]c3|J </property>
h~26WLf. :EH=_" <property name="hibernate.c3p0.max_size">20</property>
/bEAK- G: JR7 N$ <property name="hibernate.c3p0.min_size">5</property>
k8Xm n6X C?Ucu]cW <property name="hibernate.c3p0.timeout">120</property>
H-%v3d>3 _|] x2xb) <property name="hibernate.c3p0.max_statements">100</property>
m,S{p<-h .B yu N <property name="hibernate.c3p0.idle_test_period">120</property>
2%> FR4a oE~RyS X <property name="hibernate.c3p0.acquire_increment">2</property>
K#xv u1U 6#yUc_5 \ j4b4!^fV <!--是否将运行期生成的SQL输出到日志以供调试-->
AEuG v}#
Y~Ifj,\ <property name="show_sql">true</property>
IAEAhqp 4=.so~9odX ^ &)|sP <!--指定连接的语言-->
b2]Kx&! bfO=;S]b! <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
`kr?j:g B:QHwzd BD- AI <!--映射Student这个资源-->
Q^I\cAIB nd (S3rct& <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
.KC ++\{HE BC]?0 U x :7IIvP </session-factory>
{| \.i 8] ikygt" J= L5=G7( </hibernate-configuration>
bx Wa oWE0 +O5hH8<&b 7Qsgys#/= or]IZ2^n 3．proxool连接池
Sz RmF1< v@Ox:wl> (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
s 79r@])= aoTP [Bp `-&K~^-cH <?xml version="1.0" encoding="UTF-8"?>
Df#l8YK# I0a<%;JJW <!-- the proxool configuration can be embedded within your own application's.
&OBkevg Kg$ Mx Anything outside the "proxool" tag is ignored. -->
`W-Fssu N<-Gk6`C/
FC *[* <something-else-entirely>
wAd9 !by\9
?n <proxool>
kW (Bkuc) m4g$N) <!--连接池的别名-->
L-\GHu~) go"Hf_ <alias>DBPool</alias>
2"5v[,$1H :Yks|VJ1 _2nx^E(pd <!--proxool只能管理由自己产生的连接-->
;$tSb ~K+ Z8oK2D w <driver-url>
,(4K4pN ASfaX:ke jdbc:mysql://localhost:3306/schoolproject?useUnicode=true&characterEncoding=UTF8
]~nKK@Rw :aQt;C6Z> </driver-url>
m 6djeOl * 4Izy14e <!?JDBC驱动程序-->
yZ`wfj$Jj Y<rU#Z #T <driver-class>com.mysql.jdbc.Driver</driver-class>
Uwi7) q]M0md <driver-properties>
A9JdU& ]tDDq=+v <property name="user" value="root"/>
~,~eoW7 k'"%.7 $U! <property name="password" value=""/>
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6@]Dm U ? =Dg1 </driver-properties>
x ;')9/3 qv* ^fiT e]tDy0@ <!-- proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回
h@h! ,; >U3cTEs cj 收,超时的销毁-->
RGU\h[ r4f~z$QK <house-keeping-sleep-time>90000</house-keeping-sleep-time>
TU7' J rt| 7h>RQ nvUc\7(%NW <!-- 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
'eX ' F\KUZ[% 用户连接就不会被接受-->
l (%1jC8 /SrAW`;" <maximum-new-connections>20</maximum-new-connections>
9I/N4sou w\brVnt t_ suF$ <!-- 最少保持的空闲连接数-->
hG:|9Sol, j w9b ) <prototype-count>5</prototype-count>
\j)E 5b+ I9Fr5p-%O 9k ~8 <!-- 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
~!3r&( PzR[KUK 等待请求数由maximum-new-connections决定-->
9$m|'$p3sG C/&-l{7 <maximum-connection-count>100</maximum-connection-count>
,=mS,r7 D ) 'bH5 TW>WHCAm <!-- 最小连接数-->
$2el&I ;ZG\p TCA <minimum-connection-count>10</minimum-connection-count>
BRYHX.}h\A TBrPf-Xr Fr$5RAyg </proxool>
2wgg7[tGi pU7lnS[ </something-else-entirely>
v<:R# I)W`sBL ^Va1f'g (2)配置hibernate.cfg.xml文件
H $KTo/ i @R
1/M <?xml version='1.0' encoding='UTF-8'?>
c7E11 \%&Z OaZQ7 BGq <!DOCTYPE hibernate-configuration
)tnh4WMh} ?KI, cl PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
aoa)BNs d5z`B H. "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
1&o|TT/ a+PzI x2 hDq`Z$_+KX <hibernate-configuration>
0nD/;\OU o7LuKRl
/ Qk 4 <session-factory >
bNoW?8bZ z%LIX^q9 HgkC~' <property name="hibernate.connection.provider_class">
E`k@{*Hn& qWKAM@ org.hibernate.connection.ProxoolConnectionProvider
C C^'@~)? |qZ1| </property>
[=]4-q6UN M[112%[+4 <property name="hibernate.proxool.pool_alias">DBPool</property>
ohGfp9H ?8Cq{ <property name="hibernate.proxool.xml">proxoolconf.xml</property>
k,F6Tx xpx\=iAe A6iq[b] <!--是否将运行期生成的SQL输出到日志以供调试-->
Nl(3Xqov fe#\TNeQJ[ <property name="show_sql">true</property>
78H' a x9m yq iq,=OvP qc~iQSI <!--指定连接的语言-->
U2~kJ ?#YE`] <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
CoAv Sw Km6YP !i -{vKus <!--映射Student这个资源-->
+V^;.P</ oD1/{dRzj <mapping resource="com/wqbi/model/pojo/student.hbm.xml" />
1\rz%E _M5|Y@XN- 3K/MvNI> </session-factory>
^_5r<{7/ : 1s@+;QUib 3fJc
9| </hibernate-configuration>
@<]Ekkg h@WhNk7"xa ?r+- (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
{ Z5nGG yw3$2EW (2) hibernate.proxool.pool_alias这里就是用我们上面提到的连接池的别名
Y<ql49- X 9
ea\ vZ (3) hibernate.proxool.xml是向Hibernate声明连接池的配置文件位置，可以用相对或绝对路径，用相对路径时要注意一定在要Path范围内！不然会抛出异常。
~B(4q K1G f_Av3 (4) dialect是声明ＳＱＬ语句的方言
X=8{$: M b1s F (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。
j;iAD:nf ; Nj7qt (6) <mapping >资源文件映射
xZF}D/S?Ov @Sbe^x *lw_=MXSK 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：
0 aa&m[Mk 5vZ^0yFQ hibernate.connection.datasource=java:/comp/env/jdbc/schoolproject //JNDI名
&;sP_ h ce3YCflt hibernate.transaction.factory_class = org.hibernate.transaction.JTATransactionFactory
x&T [*i Wo RZW% hibernate.transaction.manager_loopup_class =
N;j)k; s1=G; org.hibernate.transaction.JBossTransactionManagerLookup
&<U0ZvrsH -FQ 'agf@& hibernate.dialect=org.hibernate.dialect.MySQLDialect
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