jdbc 链接数据库配置Properties 方法

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