读取配置文件

import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Properties;

public class PropertiesUtil {  private final static String propertiesPath ="./config.properties";    private static Properties properties;  static{   try{    properties = new Properties();    properties.load(new FileInputStream(propertiesPath));   }catch (Exception e) {    e.printStackTrace();   }  }  public static String get(String key) {   return (String)properties.get(key);  }

 public static void set(String key,String value) {   try{    //in.close();    OutputStream os = new FileOutputStream(propertiesPath,false);    properties.setProperty(key, value);    properties.store(os, "Update '"+key+"' value");    os.close();   }catch (IOException e) {    System.out.println("属性文件更新错误");   }  }  public static void main(String[] args) {   System.out.println(get("WeatherDbPasswd"));  } }