java 静态代码块加载配置文件信息

文件结构:



文件:db.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306?characterEncoding=utf8
username=root
password=123456

文件:Main.java
import java.util.ResourceBundle;

public class Main {
private static String driver;
private static String url;
private static String username;
private static String password;

static{
ResourceBundle bundle= ResourceBundle.getBundle("db");
driver=bundle.getString("driver");
url=bundle.getString("url");
username=bundle.getString("username");
password=bundle.getString("password");
}
public static void main(String[] args) {
System.out.println(driver);
System.out.println(url);
System.out.println(username);
System.out.println(password);
}
}


运行结果: