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  • JDBC_c3p0连接池

    package cn.code.demo;
    
    import java.beans.PropertyVetoException;
    import java.sql.Connection;
    import java.sql.SQLException;
    
    import org.junit.Test;
    
    import com.mchange.v2.c3p0.ComboPooledDataSource;
    
    /*
     * c3p0
     * c3p0配置文件要求:
     * 文件名称必须是 c3p0-config.xml
     * 位置必须在src下
     * */
    public class C3P0Demo1 {
        @Test
        public void fun1() throws PropertyVetoException, SQLException{
            ComboPooledDataSource dataSource = new ComboPooledDataSource();
            dataSource.setDriverClass("com.mysql.jdbc.Driver");
            dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/mydb1");
            dataSource.setUser("root");
            dataSource.setPassword("123");
            //池配置
    //        dataSource.setInitialPoolSize(20);
            
            Connection con = dataSource.getConnection();
            System.out.println(con);
            con.close();
        }
        @Test
        public void fun2() throws SQLException{
            ComboPooledDataSource dataSource = new ComboPooledDataSource();
            Connection con = dataSource.getConnection();
            System.out.println(con);
            con.close();
        }
    }

    //配置文件

    <?xml version="1.0" encoding="UTF-8"?>
    <c3p0-config>
    <!-- 默认配置信息 -->
        <default-config>
            <property name="jdbcUrl">jdbc:mysql://localhost:3306/mydb1</property>
            <property name="driverClass">com.mysql.jdbc.Driver</property>
            <property name="user">root</property>
            <property name="password">123</property>
            <property name="acquireIncrement">3</property>
            <property name="initialPoolSize">10</property>
            <property name="minPoolSize">2</property>
            <property name="maxPoolSize">10</property>
        </default-config>
    <!-- 自定义配置信息(模拟oracle) -->
        <named-config name="oracle-config">
        <property name="jdbcUrl">jdbc:mysql://localhost:3306/mydb1</property>
            <property name="driverClass">com.mysql.jdbc.Driver</property>
            <property name="user">root</property>
            <property name="password">123</property>
            <property name="acquireIncrement">3</property>
            <property name="initialPoolSize">10</property>
            <property name="minPoolSize">2</property>
            <property name="maxPoolSize">10</property>
        </named-config>
    </c3p0-config>
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  • 原文地址:https://www.cnblogs.com/wangyinxu/p/7428222.html
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