package com.tcl.customerapi;

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

import android.util.Log;

public class PropertiesUtil {

	
	//关于Properties类常用的操作
	    //根据Key读取Value
	    public static String GetValueByKey(String filePath, String key) {
	        Properties pps = new Properties();
	        InputStream in =null;
	        try {
	            in = new BufferedInputStream (new FileInputStream(filePath));  
	            pps.load(in);
	            String value = pps.getProperty(key);
	            pps.clear();
//	            System.out.println(key + " = " + value);
	            return value;
	            
	        }catch (IOException e) {
	            e.printStackTrace();
	            return null;
	        }finally{
	        	try {
	        		if(in!=null){
	        			in.close();
	        		}
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
	        }
	    }
	    
	    //读取Properties的全部信息
	    public static void GetAllProperties(String filePath) throws IOException {
	        Properties pps = new Properties();
	        InputStream in = new BufferedInputStream(new FileInputStream(filePath));
	        pps.load(in);
	        Enumeration en = pps.propertyNames(); //得到配置文件的名字
	        
	        while(en.hasMoreElements()) {
	            String strKey = (String) en.nextElement();
	            String strValue = pps.getProperty(strKey);
	            System.out.println(strKey + "=" + strValue);
	        }
	        in.close();
	        pps.clear();
	    }
	    
	    //写入Properties信息
	    public static void WriteProperties (String filePath, String pKey, String pValue) throws IOException {
	        Properties pps = new Properties();
	        InputStream in = null;
	        OutputStream out = null;
	        try {
		        in = new FileInputStream(filePath);
		        //从输入流中读取属性列表（键和元素对） 
		        pps.load(in);
		        //调用 Hashtable 的方法 put。使用 getProperty 方法提供并行性。  
		        //强制要求为属性的键和值使用字符串。返回值是 Hashtable 调用 put 的结果。
		        out = new FileOutputStream(filePath);
		        pps.setProperty(pKey, pValue);
		        //以适合使用 load 方法加载到 Properties 表中的格式，  
		        //将此 Properties 表中的属性列表（键和元素对）写入输出流  
		        pps.store(out, "Update " + pKey + " name");
			} catch (Exception e) {
				e.printStackTrace();
			}finally{
				if(out!=null){
					out.close();
				}
				if(in!=null){
					in.close();
				}
			}

	        
	        
	    }
	    
//	    public static void main(String [] args) throws IOException{
//	        //String value = GetValueByKey("Test.properties", "name");
//	        //System.out.println(value);
//	        //GetAllProperties("Test.properties");
//	        WriteProperties("Test.properties","long", "212");
//	    }
	
}
