获取properties配置文件参数值工具类

原生java

package com.util.sm4util;

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

public class ResourceUtil {

    static Properties properties = null;

    static{
         properties=new Properties();
        InputStream in= ResourceUtil.class.getClassLoader().getResourceAsStream("system.properties");
        try {
            properties.load(in);
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

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

    public static Properties getProperties(){
        return properties;
    }

}