java的DataSource类连接数据库原理

最新推荐文章于 2025-06-17 00:09:15 发布

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最新推荐文章于 2025-06-17 00:09:15 发布

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分类专栏： java的DataSource类连接数据库原理文章标签： java

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本文介绍了一个基于Apache Commons DBCP实现的Oracle数据库连接池的配置方法，并通过示例展示了如何使用该连接池获取数据库连接及执行简单查询。

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需要jar包：

commons-validator.jar
commons-dbcp-1.3.jar
commons-beanutils.jar
commons-pool-1.5.2.jar
commons-logging.jar
ojdbc14.jar

package org.liujian.test.db;

import org.apache.commons.dbcp.BasicDataSource;

/**
* File Desc: dataSource类
* Product Name: SIRM
* Module Name: BaseDase
* Author:      刘建
* History:     11-12-10 created by 刘建
*/
public class DataSource {
    private BasicDataSource dataSource;

    public static BasicDataSource getDataSource() {
        BasicDataSource basicDataSource = new BasicDataSource();
        basicDataSource.setDefaultAutoCommit(true);
        basicDataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
        basicDataSource.setUrl("jdbc:oracle:thin:@192.168.20.160:1521:orcl");
        basicDataSource.setUsername("sirmetltest");
        basicDataSource.setPassword("sirmetltest");
        return basicDataSource;
    }
}

package org.liujian.test.db;

import java.sql.*;

/**
* File Desc:
* Product Name: SIRM
* Module Name: BaseDase
* Author:      刘建
* History:     11-12-10 created by 刘建
*/
public class DataSourceFactory {
    public static void main(String[] args) {
        try {
            // Class.forName("oracle.jdbc.driver.OracleDriver");
            // Connection ct = DriverManager.getConnection("jdbc:oracle:thin:@192.168.20.160:1521:orcl", "sirmetltest", "sirmetltest");
            Connection ct = DataSource.getDataSource().getConnection();
            Statement statement = ct.createStatement();
            ResultSet rs = statement.executeQuery("select * from r_database");
            while (rs.next()) {
                System.out.println(rs.getString("name"));
            }
            rs.close();
            statement.close();
            ct.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}