package com.pb.news.util;

import java.io.IOException;

import java.io.InputStream;

import java.sql.ResultSet;

import java.util.Properties;

//读取配置文件（属性文件）的工具类

public class ConfigManager {

private static ConfigManager configManager;

//properties.load(InputStream);读取属性文件

private static Properties properties;

private ConfigManager(){

String configFile="database.properties";

properties=new Properties();

InputStream in=ConfigManager.class.getClassLoader().getResourceAsStream(configFile);

try {

properties.load(in);

in.close();

} catch (IOException e) {

e.printStackTrace();

}

}

//通过单例模式设置实例化的个数

public static ConfigManager getInstance(){

if(configManager==null){

configManager=new ConfigManager();

}

return configManager;

}

//通过key获取对应的value

public String getString(String key){

return properties.getProperty(key);

}

}