从文件获取参数

package com.ctd.cloud.manager.util;

import com.ctd.cloud.apps.platform.utils.CostCenterConfig;
import org.apache.log4j.Logger;

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

/**

• Copyright 2018 goclouds. All Rights Reserved.
• @author 冯金金. Email:fengjinjin@goclouds.cn
• @version 1.0, 2018-12-11 15:28
• /

public class ManagerConfig {

private static final Logger log = Logger.getLogger(ManagerConfig.class);

private static String configFile = "/manager.properties";
private static Properties prop = new Properties();

static {
    InputStream is = ManagerConfig.class.getResourceAsStream(configFile);
    if (is == null) {
        log.error(configFile + "文件不存在,请检查");
    } else {
        try {
            prop.load(is);
        } catch (Exception e) {
            log.error("读取" + configFile + "出错:" + e.getMessage());
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    log.error("关闭IO流出错:" + e.getMessage());
                }
            }
        }
    }
}

public static String getProperty(String key){
    return prop.getProperty(key);
}
public static String getRootPath(){
    return "/" + prop.getProperty("sysGroupNum");
}

}