使用dbcp连接mysql

1.创建dbcp.properties 文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/zhang
username=root
password=123456

2.创建连接工具类

package com.util;

import org.apache.commons.dbcp.BasicDataSource;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.ResourceBundle;

public class MysqlDbcp {
    private static BasicDataSource ds;
    private static String driver;
    private static String url;
    private static String username;
    private static String password;

    private static void init(){
        ResourceBundle bundle=ResourceBundle.getBundle("mysql");
        driver=bundle.getString("driver");
        url=bundle.getString("url");
        username=bundle.getString("username");
        password=bundle.getString("password");
        ds=new BasicDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(username);
        ds.setPassword(password);
    }

    public static Connection getConnection(){
        if(ds==null){init();}
        Connection conn=null;
        try {
            conn=ds.getConnection();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return conn;
    }
    public static void closeConnection(Connection conn){
        if(conn!=null){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

}

end