jdbc连接oracle、mysql、sqlserver

共同的连接工具类

package com.hipad.util;

import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

/**
 * @author: create by libin
 * @version: v1.0
 * @description: com.hipad.util
 * @date:2018年5月2日
 */
public class MyJdbcUtils {
	private static String driverName;
	private static String url;
	private static String user;
	private static String password;
	private static ThreadLocal<Connection> local = new ThreadLocal<>();
	private static String loginUri;
	private MyJdbcUtils() {
	}
	static {
		try {
			Properties prop = new Properties();
			InputStream in = MyJdbcUtils.class.getResourceAsStream("/jdbc.properties");
			prop.load(in);
			driverName = prop.getProperty("DriverName");
			url = prop.getProperty("url");
			user = prop.getProperty("user");
			password = prop.getProperty("password");
			loginUri = prop.getProperty("loginUri");
			Class.forName(driverName);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	public static String getLoginUri() {
		return loginUri;
	}
	/**
	 * 获取连接的方式
	 * 
	 * @return
	 * @throws SQLException
	 */
	public static Connection getConnection() throws Exception {
		Connection conn = local.get();
		if (conn == null) {
			conn = DriverManager.getConnection(url, user, password);
			local.set(conn);
		}
		return conn;
	}
	/**
	 * 提交事务的方法
	 * 
	 * @throws Exception
	 */
	public static void commit() throws Exception {
		getConnection().commit();
	}
	/**
	 * 回滚事务
	 * 
	 * @throws Exception
	 */
	public static void rollback() throws Exception {
		getConnection().rollback();
	}

	/**
	 * 开启事务
	 * 
	 * @throws Exception
	 */
	public static void startTransaction() throws Exception {
		getConnection().setAutoCommit(false);
	}

	// 针对查询释放资源
	public static void release(ResultSet rs, Statement stmt, Connection conn) {

		if (rs != null) {
			try {
				rs.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			rs = null;
		}

		if (stmt != null) {
			try {
				stmt.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			stmt = null;
		}

		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			conn = null;
		}

	}

	// 针对增删改释放资源
	public static void release(Statement stmt, Connection conn) {

		if (stmt != null) {
			try {
				stmt.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			stmt = null;
		}

		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			conn = null;
		}
	}
}

1，jdbc连接oracle

连接所需：ojdbc14.jar，jdbc.properties配置文件，共同的连接工具类

jdbc.properties

DriverName=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@10.1.6.58:1521:orcl
user=用户名
password=密码

2，jdbc连接mysql

连接所需：mysql-connector-java-5.1.39-bin.jar，jdbc.properties配置文件，共同的连接工具类

DriverName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/hipad_sl
user=root
password=123

3，jdbc连接sqlserver

连接所需：sqljdbc42.jar，jdbc.properties配置文件，共同的连接工具类

jdbc.properties

DriverName=com.microsoft.sqlserver.jdbc.SQLServerDriver
url=jdbc:sqlserver://10.1.6.24:1433;DatabaseName=AIS20180518162016
user=user
password=password