spring配置ibatis的jdbc方式和proxool、c3p0连接池方式

spring配置ibatis的jdbc方式和proxool连接池方式，以sqlserver2005为例，驱动为sqljdbc.jar
jdbc.properties中内容如下

jdbc . driverClassName = com . microsoft . sqlserver . jdbc . SQLServerDriver
jdbc . url = jdbc \: sqlserver \:// localhost \: 1433 ; DatabaseName \= IBATIS
jdbc . username = sa
jdbc . password = 123456

1 直接用jdbc方式（这种方式适合开发阶段，发布的程序强烈要求用连接池），代码如下，这个都知道，没什么可说的

<? xml version="1.0" encoding="UTF-8" ?>
< beans  xmlns ="http://www.springframework.org/schema/beans"
    xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop ="http://www.springframework.org/schema/aop"
    xmlns:context ="http://www.springframework.org/schema/context"
    xmlns:tx ="http://www.springframework.org/schema/tx"
    xsi:schemaLocation ="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd" >
    
     < context:component-scan  base-package ="com.mydomain" >
         < context:include-filter  type ="aspectj"  expression ="com.mydomain.spring..*" />
     </ context:component-scan >
     < context:property-placeholder  location ="classpath:jdbc.properties"   />
     < bean  id ="dataSource"  
        class ="org.apache.commons.dbcp.BasicDataSource"
        destroy-method ="close" >
         < property  name ="driverClassName"  value ="${jdbc.driverClassName}"   />
         < property  name ="url"  value ="${jdbc.url}"   />
         < property  name ="username"  value ="${jdbc.username}"   />
         < property  name ="password"  value ="${jdbc.password}"   />
     </ bean >

     < bean  id ="sqlMapClient"  class ="org.springframework.orm.ibatis.SqlMapClientFactoryBean" >
         < property  name ="configLocation"  value ="classpath:com/mydomain/data/SqlMapConfig.xml" />
         < property  name ="dataSource"  ref ="dataSource" />
     </ bean >
     <!-- 事务管理直接用的DataSourceTransactionManager -->
     < bean  id ="txManager"  class ="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
         < property  name ="dataSource"  ref ="dataSource" />
     </ bean >
     < aop:config >
         < aop:pointcut  id ="baseServiceMethods"
            expression ="execution(* com.mydomain.spring.*.*(..))"   />
         < aop:advisor  advice-ref ="txAdvice"
            pointcut-ref ="baseServiceMethods"   />
     </ aop:config >
     < aop:aspectj-autoproxy  />
     < tx:advice  id ="txAdvice"  transaction-manager ="txManager" >
         < tx:attributes >
             < tx:method  name ="select*"  read-only ="true"  propagation ="REQUIRED" />
             < tx:method  name ="find*"  read-only ="true"   propagation ="REQUIRED" />
             < tx:method  name ="save*"   propagation ="REQUIRED"  isolation ="REPEATABLE_READ" />
             < tx:method  name ="update*"   propagation ="REQUIRED"  isolation ="REPEATABLE_READ" />
             < tx:method  name ="add*"   propagation ="REQUIRED"  isolation ="REPEATABLE_READ"   />
             < tx:method  name ="delete*"   propagation ="REQUIRED"  isolation ="REPEATABLE_READ" />
         </ tx:attributes >
     </ tx:advice >
</ beans >

SqlMapConfig.xml内容如下：

<! DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"
    "http://www.ibatis.com/dtd/sql-map-config-2.dtd" >

< sqlMapConfig >
   < sqlMap  resource ="com/mydomain/data/Account.xml" />
  
</ sqlMapConfig >

2 用proxool连接池方式，只有datasource发生变化，其他的无变动
  需要加入proxool.jar

     < bean  id ="dataSource"  class ="org.logicalcobwebs.proxool.ProxoolDataSource"  destroy-method ="close" >
         < property  name ="alias"  value ="test" ></ property >
         < property  name ="delegateProperties" >
             < value > user=${jdbc.username},password=${jdbc.password} </ value >
         </ property >
         < property  name ="user"  value ="${jdbc.username}" />
         < property  name ="password"  value ="${jdbc.password}" />
         < property  name ="driver"  value ="${jdbc.driverClassName}" />
         < property  name ="driverUrl"  value ="${jdbc.url}" />
         < property  name ="houseKeepingTestSql"  value ="select CURRENT_DATE" ></ property >
        <!--此处继续增加proxool属性，详细见proxool文档-->
     </ bean >

此处说明一下：属性中的user和password不起任何作用，需要用delegateProperties方式写一下，否则会报错误，如下
    org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user ''. The user is not associated with a trusted SQL Server connection.
但是user和password还不能被去掉。

除了上面的用delegateProperties之外，还可以将用户名和密码直接写在url后面。

proxool属性的说明，在这里写的比较详细
http://www.cnblogs.com/wllyy189/archive/2008/10/15/1311560.html
3 c3p0方式
  需要加入c3p0.jar

     < bean  id ="dataSource"  class ="com.mchange.v2.c3p0.ComboPooledDataSource"  destroy-method ="close" >
         < property  name ="driverClass" >
                 < value > ${jdbc.driverClassName} </ value >
             </ property >
             < property  name ="jdbcUrl" >
                 < value > ${jdbc.url} </ value >
             </ property >
             < property  name ="user" >
                 < value > ${jdbc.username} </ value >
             </ property >
             < property  name ="password" >
                 < value > ${jdbc.password} </ value >
             </ property >
            <!--此处继续增加c3p0 属性-->
     </ bean >

关于c3p0的属性说明请参见：
http://www.blogjava.net/Alpha/archive/2009/03/29/262789.html