package com.test.common;

import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Util {
	
	public static String checkValid(String value){
		if(null==value){
			return "";
		}else{
			return value.trim();
		}
	}
	
	public static String changeEncoding(String value){
		value = checkValid(value);
		try {
			new String(value.getBytes("ISO8859-1"),"UTF-8");
		} catch (UnsupportedEncodingException e) {
			System.out.println("编码转换异常");
			value="";
		}
		return value;
	}
	
	public static String dateStr(){
		String id="";
		Date currentTime = new Date();
		SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmmss");
		id = formatter.format(currentTime);
		return id;
	}
	
//	public static void main(String []args){
//		System.out.println(dateStr(null));
//	}

}