Java 读取Properties配置文件

读取Properties配置文件的方法，经常忘记，记录下来备忘一下：

package utils;

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



public class PropertyConfig {
    private static Properties config;
    static {
        config = new Properties();
        InputStream in = ClassLoader.getSystemResourceAsStream("storm.properties");  //storm.properties 存于 classpath目录下

        try {
            config.load(in);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static String getProperty(String key){
        return config.getProperty(key);
    }

    public static void main(String[] args) {
        System.out.println(PropertyConfig.getProperty("key"));
    }
}