j2eetrainspsys/src/com/util/Info.java

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package com.util;



import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.context.support.WebApplicationContextUtils;




public class Info {
	
	 public static Object getDao(HttpServletRequest request,String name)
	    {
	    	Object ad= (Object) WebApplicationContextUtils
	    	.getRequiredWebApplicationContext(request.getSession().getServletContext()).getBean(name);
	    	return ad;
	    }
	
	public synchronized static String getID() {
		Random random = new Random();
		StringBuffer ret = new StringBuffer(20);
		String rand = String.valueOf(Math.abs(random.nextInt()));
		ret.append(getDateStr());
		ret.append(rand.substring(0,6));
		
		return ret.toString();
	} 
	
	public synchronized static String subStr(String source,int length) {
		if(source.length()>length)
		{
			source=source.substring(0,length)+"...";
		}
		
		return source;
	}