connectionfactory.java

电信短信订购系统

package com.ouyang.ms.util;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;

public class ConnectionFactory {
	private static Properties config=new Properties();
	static{
		try {
			//FileInputStream fis=new FileInputStream("config.txt");
			InputStream is=ConnectionFactory.class.getClassLoader()
			.getResourceAsStream("config.properties");
			//getResourceAsStream(文件名):作用是从类的加载路径上去查找指定文件,并返回一
			//条该文件的输入流.
			config.load(is);
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	public static Connection getConnection(){
		Connection con=null;
		//PreparedStatement ps=null;
		try{
			Class.forName("oracle.jdbc.driver.OracleDriver");
			String ip=config.getProperty("ip");
			String port=config.getProperty("port");
			String dname=config.getProperty("dname");
			String url="jdbc:oracle:thin:@"+ip+":"+port+":"+dname;
			String name=config.getProperty("username");
			String password=config.getProperty("password");
			con=DriverManager.getConnection(url,name,password);	
		}catch(Exception e){
			e.printStackTrace();
		}
		
		return con;
	}
	public static void closeConnection(Connection con,PreparedStatement ps){
	
		if(ps!=null){
			try {
				ps.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
			if(con!=null){
				try {
					con.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			if(ps!=null){
				try {
					ps.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
	public static void closeConnection(Connection con,Statement st){
		
		if(st!=null){
			try {
				st.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(con!=null){
			try {
				con.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(st!=null){
			try {
				st.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	public static void closeConnection(Connection con,PreparedStatement ps,ResultSet rs){
		
		if(rs!=null){
			try {
				rs.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(ps!=null){
			try {
				ps.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(con!=null){
			try {
				con.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(ps!=null){
			try {
				ps.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
	public static void closeConnection(Connection con,Statement st,ResultSet rs){
		if(rs!=null){
			try {
				rs.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(st!=null){
			try {
				st.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		if(con!=null){
			try {
				con.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
		
	}
}