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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
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xmlns:tx="http://www.springframework.org/schema/tx"
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xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
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http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
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http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">
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<context:component-scan base-package="com.ischoolbar.programmer">
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<context:include-filter type="annotation"
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expression="org.springframework.stereotype.Component" />
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<context:include-filter type="annotation"
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expression="org.springframework.stereotype.Repository" />
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<context:include-filter type="annotation"
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expression="org.springframework.stereotype.Service" />
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</context:component-scan>
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<!-- 加载配数据源配置文件 db.properties -->
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<context:property-placeholder location="classpath:config/db.properties" />
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<!-- 配置 C3P0 数据源 -->
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<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
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<property name="driverClass" value="${datasource.connection.driver_class}"/>
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<property name="jdbcUrl" value="${datasource.connection.url}"/>
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<property name="user" value="${datasource.connection.username}"/>
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<property name="password" value="${datasource.connection.password}"/>
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<property name="minPoolSize" value="${datasource.connection.minPoolSize}"/>
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<!--连接池中保留的最大连接数。Default: 15 -->
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<property name="maxPoolSize" value="${datasource.connection.maxPoolSize}"/>
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<!--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 -->
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<property name="maxIdleTime" value="${datasource.connection.maxIdleTime}"/>
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<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
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<property name="acquireIncrement" value="${datasource.connection.acquireIncrement}"/>
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<!--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。
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如果maxStatements与maxStatementsPerConnection均为0，则缓存被关闭。Default: 0 -->
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<property name="maxStatements" value="${datasource.connection.maxStatements}"/>
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<!--maxStatementsPerConnection定义了连接池内单个连接所拥有的最大缓存statements数。Default: 0 -->
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<property name="maxStatementsPerConnection"
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value="${datasource.connection.maxStatementsPerConnection}"/>
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<!--初始化时获取三个连接，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
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<property name="initialPoolSize" value="${datasource.connection.initialPoolSize}"/>
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<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
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<property name="idleConnectionTestPeriod"
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value="${datasource.connection.idleConnectionTestPeriod}"/>
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<!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
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<property name="acquireRetryAttempts"
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value="${datasource.connection.acquireRetryAttempts}"/>
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<!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留，并在下次调用getConnection()的时候继续尝试获取连接。如果设为true，那么在尝试
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获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
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<property name="breakAfterAcquireFailure"
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value="${datasource.connection.breakAfterAcquireFailure}"/>
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<!--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
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等方法来提升连接测试的性能。Default: false -->
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<property name="testConnectionOnCheckout"
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value="${datasource.connection.testConnectionOnCheckout}"/>
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<property name="checkoutTimeout" value="${datasource.connection.checkoutTimeout}"/>
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<property name="testConnectionOnCheckin"
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value="${datasource.connection.testConnectionOnCheckin}"/>
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<property name="automaticTestTable" value="${datasource.connection.automaticTestTable}"/>
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<property name="acquireRetryDelay" value="${datasource.connection.acquireRetryDelay}"/>
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<!--自动超时回收Connection-->
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<property name="unreturnedConnectionTimeout" value="${datasource.connection.unreturnedConnectionTimeout}"/>
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<!--超时自动断开-->
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<property name="maxIdleTimeExcessConnections" value="${datasource.connection.maxIdleTimeExcessConnections}"/>
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<property name="maxConnectionAge" value="${datasource.connection.maxConnectionAge}"/>
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</bean>
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<!-- 事务管理器 （JDBC） -->
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<bean id="transactionManager"
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class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
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<property name="dataSource" ref="dataSource"></property>
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</bean>
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<!-- 启动声明式事务驱动 -->
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<tx:annotation-driven transaction-manager="transactionManager" />
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<!-- spring 通过 sqlSessionFactoryBean 获取 sqlSessionFactory 工厂类 -->
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<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
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<property name="dataSource" ref="dataSource"></property>
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<!-- 扫描 po 包，使用别名 -->
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<property name="typeAliasesPackage" value="com.ischoolbar.programmer.entity"></property>
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<!-- 扫描映射文件 -->
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<property name="mapperLocations">
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<array>
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<value>classpath:config/mybatis/mapper/admin/*.xml</value>
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<value>classpath:config/mybatis/mapper/home/*.xml</value>
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<value>classpath:config/mybatis/mapper/common/*.xml</value>
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</array>
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</property>
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</bean>
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<!-- 配置扫描 dao 包，动态实现 dao 接口，注入到 spring 容器中 -->
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<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
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<property name="basePackage" value="com.ischoolbar.programmer.dao" />
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<!-- 注意使用 sqlSessionFactoryBeanName 避免出现spring 扫描组件失效问题 -->
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<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
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</bean>
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<bean id="gson" class="com.google.gson.Gson" scope="prototype"></bean>
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</beans> |
