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  • Spring c3p0支持Hibernate配置

    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE hibernate-configuration PUBLIC
            "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
            "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
        <session-factory>
            <!-- 该类是hibernate-c3p0-5.2.6.Final中的-->
            <property name="hibernate.connection.provider_class">org.hibernate.c3p0.internal.C3P0ConnectionProvider</property>
            <!-- 设置最小连接数 -->
            <property name="hibernate.c3p0.min_size">5</property>
            <!-- 设置最大连接数 -->
            <property name="hibernate.c3p0.max_size">15</property>
            <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
            <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate?characterEncoding=GBK</property>
            <property name="hibernate.connection.username">root</property>
            <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
            <property name="hibernate.show_sql">true</property>
            <mapping resource="com/maya/model/TStudent.hbm.xml" />
        </session-factory>
    </hibernate-configuration>
    package com.maya.test;
    import java.util.Calendar;
    import java.util.List;
    import org.hibernate.Session;
    import com.maya.model.TStudent;
    public class TestHibernate {
    
        public static void main(String[] args) {
            
            long start = Calendar.getInstance().getTimeInMillis();
            for(int i=0;i<1000;i++){
                Session session = HibernateUtil.getSession();
                List<TStudent> list = session.createQuery("from TStudent").getResultList();
                for(TStudent data:list){
                    System.out.println(data);
                }
                HibernateUtil.closeSession();
            }
            long end = Calendar.getInstance().getTimeInMillis();
            System.out.println(end-start);
        }
    }

    对于hibernate来说用与不用连接池的链接效率几乎没什么不同

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  • 原文地址:https://www.cnblogs.com/AnswerTheQuestion/p/6641738.html
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