這篇文章實現讀取Properties配置文件來訪問本地的mysql數據庫,至於什麼是Properties,請看文章末尾的參考資料。
一、項目工程
二、Javacode
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
public class Mysql {
public static void main(String[] args) throws Exception{
// TODO Auto-generated method stub
getConn();
}
private static Connection getConn() throws Exception{
Connection conn = null;
String url = null;
String username = null;
String password = null;
String driver = null;
Properties pro = new Properties();
pro.load(Mysql.class.getResourceAsStream("jdbc.properties"));
//從配置文件讀取數據
url = pro.getProperty("url");
username = pro.getProperty("username");
password = pro.getProperty("password");
driver = pro.getProperty("driver");
try {
Class.forName(driver);
conn = (Connection) DriverManager.getConnection(url, username, password);
System.out.println("數據庫連接成功!");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
System.out.println("數據庫連接失敗!");
}
return conn;
}
}
三、properties配置文件
url=jdbc\:mysql\://localhost\:3306/連接的數據庫名稱
username=你的用戶名
password=你的密碼
driver=com.mysql.jdbc.Driver
四、參考資料
(1)Java中Properties類的操作:
http://www.cnblogs.com/bakari/p/3562244.html
(2)Eclipse如何創建properties文件:
http://blog.csdn.net/u012269267/article/details/51434124
(3)Java 讀寫Properties配置文件:
http://www.cnblos.com/xudong-bupt/p/3758136.html