src/com/util/StrUtil.java

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// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   MD5.java

package com.util;

import java.text.ParseException;


import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class StrUtil {
	private static int idSequence=10000;
	
	public static String checkStr(Object obj) {
		if(obj==null){
			return "";
		}else{
			return obj.toString();
		}		
	}
	
	public synchronized static String generalSrid() {
		StringBuffer ret = new StringBuffer(20);		
		ret.append(StrUtil.getFormatDate("yyyyMMddHHmmss"));		
		idSequence++;
		if(idSequence>20000)
		  idSequence-=10000;
		ret.append(String.valueOf(idSequence).substring(1));
		//System.out.println("生成ID="+ret);
		return ret.toString();
	}
	public static String generalFileName(String srcFileName) {
		try{
		   int index=srcFileName.lastIndexOf(".");
		   return StrUtil.generalSrid()+srcFileName.substring(index).toLowerCase();
		}catch(Exception e){
			return StrUtil.generalSrid();
		}
	}
	public static String parseOS(String agent) {
		
		String system="Other";
		if(agent.indexOf("Windows NT 5.2")!=-1) 
			system="Win2003";
		else if(agent.indexOf("Windows NT 5.1")!=-1) 
			system="WinXP";
		else if(agent.indexOf("Windows NT 5.0")!=-1) 
			system="Win2000";
		else if(agent.indexOf("Windows NT")!=-1) 
			system="WinNT";
		else if(agent.indexOf("Windows 9")!=-1) 
			system="Win9x";
		else if(agent.indexOf("unix")!=-1) 
			system="unix";