在jdbc中使用properites文件进行使用

db_url=jdbc\:mysql\://localhost\:3306/db_friend
db_user=root
db_password=
db_driver=com.mysql.jdbc.Driver

private static String db_driver="";
private    static String db_url="";
private static String db_user="";
private static String db_password="";
static{
Locale locale=Locale.getDefault();//获取国家
ResourceBundle bandle=ResourceBundle.getBundle("cn/lonecloud/demo/jdbc",locale);//获取这个文件的内容第一个参数为相对这个文件的路径
db_driver=bandle.getString("db_driver");
db_url=bandle.getString("db_url");
db_user=bandle.getString("db_user");
db_password=bandle.getString("db_password");

}

import java.io.InputStream;
import java.util.Properties;

public class demo {

public static void main(String[] args) {
// TODO Auto-generated method stub
Properties properties=new Properties();//创建Properties类
InputStream in=demo.class.getResourceAsStream("jdbc.properties");//获取文件流
try {
properties.load(in);//将文件流导入properties中
} catch (Exception e) {
// TODO: handle exception
}
System.out.println(properties.getProperty("db_url"));//获取键值
}

}

import java.io.InputStream;
import java.util.Properties;

public class demo {

public static void main(String[] args) {
// TODO Auto-generated method stub
Properties properties=new Properties();//创建Properties类
InputStream in=Thread.currentThread().getContextClassLoader().getResourceAsStream("jdbc.properties");//获取文件流
try {
properties.load(in);//将文件流导入properties中
} catch (Exception e) {
// TODO: handle exception
}
System.out.println(properties.getProperty("db_url"));//获取键值
}

}