jdbc 链接数据库配置Properties 方法

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package com.itxdl.ums.util;

import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

import org.apache.commons.dbcp.BasicDataSource;

//连接池版本
public class DBUtil2 {
private static BasicDataSource dataSource;
static{
dataSource = new BasicDataSource();
initParameter();
}

public static void initParameter(){    //读取属性文件    Properties prop = new Properties();    try {        prop.load(DBUtil2.class.getClassLoader().getResourceAsStream("db.properties"));        dataSource.setUsername(prop.getProperty("jdbc.user"));        dataSource.setUrl(prop.getProperty("jdbc.url"));        dataSource.setPassword(prop.getProperty("jdbc.password"));        dataSource.setDriverClassName(prop.getProperty("jdbc.driverClass"));        dataSource.setInitialSize(Integer.parseInt(prop.getProperty("jdbc.initSize")));    } catch (IOException e) {        e.printStackTrace();    }}public static Connection getConnection() throws SQLException{    return dataSource.getConnection();}public static void close(Connection conn){    if(conn!=null){        try {            conn.close();        } catch (SQLException e) {            e.printStackTrace();        }    }}public static void main(String[] args) throws SQLException {    System.out.println(getConnection());}

}

properites配置文件

jdbc.url=jdbc:oracle:thin:@localhost:1521/xe
jdbc.user=system
jdbc.password=123456
jdbc.driverClass=oracle.jdbc.driver.OracleDriver
jdbc.initSize=20

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