<? 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:p = "http://www.springframework.org/schema/p"
xmlns:context = "http://www.springframework.org/schema/context"
xmlns:aop = "http://www.springframework.org/schema/aop" xmlns:tx = "http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
< context:property-placeholder location = "classpath:jdbc.properties" />
<!-- 扫描类包,将标注Spring注解的类自动转化Bean,同时完成Bean的注入 -->
< context:component-scan base-package = "com.controller" />
< context:component-scan base-package = "com.service" />
< context:component-scan base-package = "com.dao" />
<!-- 配置数据源 -->
< 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 >
<!--连接池中保留的最小连接数。 -->
< property name = "minPoolSize" >
< value >5</ value >
</ property >
<!--连接池中保留的最大连接数。Default: 15 -->
< property name = "maxPoolSize" >
< value >30</ value >
</ property >
<!--初始化时获取的连接数,取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
< property name = "initialPoolSize" >
< value >10</ value >
</ property >
<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
< property name = "maxIdleTime" >
< value >60</ value >
</ property >
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
< property name = "acquireIncrement" >
< value >5</ value >
</ property >
<!--JDBC的标准参数,用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。所以设置这个参数需要考虑到多方面的因素。
如果maxStatements与maxStatementsPerConnection均为0,则缓存被关闭。Default: 0 -->
< property name = "maxStatements" >
< value >0</ value >
</ property >
<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
< property name = "idleConnectionTestPeriod" >
< value >60</ value >
</ property >
<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
< property name = "acquireRetryAttempts" >
< value >30</ value >
</ property >
<!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留,并在下次调用getConnection()的时候继续尝试获取连接。如果设为true,那么在尝试
获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
< property name = "breakAfterAcquireFailure" >
< value >true</ value >
</ property >
<!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod或automaticTestTable
等方法来提升连接测试的性能。Default: false -->
< property name = "testConnectionOnCheckout" >
< value >false</ value >
</ property >
</ bean >
<!-- 配置Jdbc模板 -->
< bean id = "jdbcTemplate" class = "org.springframework.jdbc.core.JdbcTemplate" >
< property name = "dataSource" ref = "dataSource" ></ property >
</ bean >
<!-- 配置事务管理器 -->
< bean id = "transactionManager"
class = "org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref = "dataSource" />
<!-- 通过AOP配置提供事务增强,让service包下所有Bean的所有方法拥有事务 -->
< aop:config proxy-target-class = "true" >
< aop:pointcut id = "serviceMethod"
expression = " execution(* com.service..*(..))" />
< aop:advisor pointcut-ref = "serviceMethod" advice-ref = "txAdvice" />
</ aop:config >
< tx:advice id = "txAdvice" transaction-manager = "transactionManager" >
< tx:attributes >
< tx:method name = "*" />
</ tx:attributes >
</ tx:advice >
<!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 -->
< bean
class = "org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- 配置视图解析器,将ModelAndView及字符串解析为具体的页面 -->
< bean
class = "org.springframework.web.servlet.view.InternalResourceViewResolver"
p:viewClass = "org.springframework.web.servlet.view.JstlView" p:prefix = "/WEB-INF/jsp/"
p:suffix = ".jsp" />
</ beans >
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