14、Hibernate对c3p0连接池的配置

<!-- 1. 数据库连接配置 -->
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///hib_demo</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <!-- 
            数据库方法配置， hibernate在运行的时候，会根据不同的方言生成符合当前数据库语法的sql
         -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        
        <!-- 2. 其他相关配置 -->
        <!-- 2.1 显示hibernate在运行时候执行的sql语句 -->
        <property name="hibernate.show_sql">true</property>
        <!-- 2.2 格式化sql
        <property name="hibernate.format_sql">true</property>  -->
        <!-- 2.3 自动建表  -->
        <property name="hibernate.hbm2ddl.auto">update</property>
        
        <!-- 配置session的创建方式：线程方式创建session对象 -->
        <property name="hibernate.current_session_context_class">thread</property>
        
        <!--****************** 【连接池配置】****************** -->
        <!-- 配置连接驱动管理类 -->
        <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
        <!-- 配置连接池参数信息 -->
        <property name="hibernate.c3p0.min_size">2</property>
        <property name="hibernate.c3p0.max_size">4</property>
        <property name="hibernate.c3p0.timeout">5000</property>
        <property name="hibernate.c3p0.max_statements">10</property>
        <property name="hibernate.c3p0.idle_test_period">30000</property>
        <property name="hibernate.c3p0.acquire_increment">2</property>
        

<!-- 配置数据库的连接信息 -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLMyISAMDialect</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///student</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">1234</property>
        <!-- 显示调试的信息 -->
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 配置连接驱动管理类 -->
        <property name="hibernate.connection.provider_class">org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider</property>
        <!-- 配置连接池参数信息 -->
        <property name="hibernate.c3p0.min_size">2</property>
        <property name="hibernate.c3p0.max_size">4</property>
        <property name="hibernate.c3p0.timeout">5000</property>
        <property name="hibernate.c3p0.max_statements">10</property>
        <property name="hibernate.c3p0.idle_test_period">30000</property>
        <property name="hibernate.c3p0.acquire_increment">2</property>