java 每日习题（十一）读取配置文件

题目：从配置文件config.propeties中读取数据

1. 使用Configuration接口获取配置文件中的数据

2. 方法和变量都添加static关键字，让这个类在加载后直接执行getFileInfo方法，其它类可以直接通过静态变量调用配置文件中的数据。

package everyday;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.junit.BeforeClass;
import org.junit.Test;

public class ConfigInfo {

    public static String dbaddress;
    public static String username;
    public static String password;
    public static String datapath;

    @BeforeClass
    public static void getFileInfo() throws ConfigurationException {
        Configuration config = new PropertiesConfiguration("conf/config.properties");
        dbaddress = config.getString("dbaddress");
        username = config.getString("username");
        password = config.getString("password");
        datapath = config.getString("datafilepath");

    }

}