java读写配置文件

package com.zqgame.common.utils;


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


/**
 * @author anquan
 * @desc 读写配置文件.<br>
 * @date 2015-3-10 下午02:30:59
 */
public class PropertyUtil {


private static Properties props = null;
private static String props_url = "config/adms.properties";

/**
* 读配置文件(默认路径)属性值
* @param pro_name -- 属性名
* @return
*/
public static String getProperty(String pro_name){
try {
props = new Properties();
InputStream in = PropertyUtil.class.getClassLoader().getResourceAsStream(props_url);
props.load(in);     ///加载属性列表
in.close();
} catch (IOException e) {
e.printStackTrace();
}
return props.getProperty(pro_name);
}
/**
* 写入配置文件(默认路径)属性值
* @param map
*/
public static void setProperty(String k, String v){
        //获取绝对路径  
        String filePath = PropertyUtil.class.getResource("/" + props_url).getPath();  
        props = new Properties(); 
        try {  
            File file = new File(filePath);  
            if (!file.exists())  
                file.createNewFile();  
            InputStream fis = new FileInputStream(file);  
            props.load(fis);  
            //一定要在修改值之前关闭fis  
            fis.close();
            
            OutputStream fos = new FileOutputStream(filePath);  
            
props.setProperty(k, v);
props.store(fos, "update '" + v + "' value");

            //保存，并加入注释  
            fos.close();  
        } catch (IOException e) {  
        e.printStackTrace();
        } 
}

/**
* 指定配置文件读取
* @param properties
* @param pro_name
* @return
*/
public static String getProperty(String properties, String pro_name){
props_url = properties;
return getProperty(pro_name);
}
/**
* 指定配置文件写入
* @param properties
* @param k
* @param v
*/
public static void setProperty(String properties, String k, String v){
props_url = properties;
setProperty(k, v);
}

public static void main(String[] args) {
//取值
System.out.println("pwd="+PropertyUtil.getProperty("password"));

//赋值
PropertyUtil.setProperty("phone","18123672594");

System.out.println("phone="+PropertyUtil.getProperty("phone"));

}
}