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本项目主要弥补在使用mybatis3+springmvc+jquery easyui快速搭建web应用系统是遇到的框架不足. 主要工作包括： 1，扩展了ApplicationContextAware，通过单例注入spring容器，提供spring容器外的bean获取方法 2，扩展了apache shiro框架，统一了安全结构 3，扩展了mybatis3拦截器，在两个拦截器中自动完成分页注入，实现内存分页。 4，分页设计数据库方言 5，提供了一个easyuigrid的模型 6，提供了java泛型的jstl 7， xml工具包等一些小工具

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package net.sourceforge.jweb.jstl;

import java.text.ChoiceFormat;
import java.text.DateFormat;
import java.text.DateFormatSymbols;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.Format;
import java.text.MessageFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import net.sourceforge.jweb.util.ExceptionBuilder;

import org.apache.log4j.Logger;

public class FormatUtil {
	private final static Logger LOGGER=Logger.getLogger(FormatUtil.class);
	private FormatUtil(){}
	
	public static final String format(Format f, Object obj) {
		if(f==null||obj==null) return "";
		try {
			return f.format(obj);
		} catch (Exception e) {
			LOGGER.warn("Can not format obj="+obj+" from "+f);
			LOGGER.warn(ExceptionBuilder.buildStack(e));
			return "";
		}
	}
	public static final String formatDate(Date f, String format) {
		if(f==null||format==null) return "";
		try {
			return new SimpleDateFormat(format).format(f);
		} catch (Exception e) {
			LOGGER.warn("Can not format obj="+f+" by "+format);
			LOGGER.warn(ExceptionBuilder.buildStack(e));
			return "";
		}
	}
	
	public static Object parse(Format f, String source){
		if(f==null||source==null) return null;
		try {
			return f.parseObject(source);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return null;
	}
	public static String transformDate(String source, String sourceFormat, String destFormat){
		if(sourceFormat==null||source==null||sourceFormat==null) return "";
		try {
			DateFormat sourceF=new SimpleDateFormat(sourceFormat);
			DateFormat destF=new SimpleDateFormat(destFormat);
			return destF.format(sourceF.parse(source));
		} catch (Exception e) {
			LOGGER.warn("Can not transform obj="+source+" from "+sourceFormat+" to "+destFormat);
			LOGGER.warn(ExceptionBuilder.buildStack(e));
			return "";
		}
	}
	public static String transformDecimal(String source, String sourceFormat, String destFormat){
		if(sourceFormat==null||source==null||sourceFormat==null) return "";
		try {
			NumberFormat sourceF=new DecimalFormat(sourceFormat);
			NumberFormat destF=new DecimalFormat(destFormat);
			return destF.format(sourceF.parse(source));
		} catch (Exception e) {
			LOGGER.warn("Can not transform obj="+source+" from "+sourceFormat+" to "+destFormat);
			LOGGER.warn(ExceptionBuilder.buildStack(e));
			return "";
		}
	}
	public static String transformChoice(String source, String sourceFormat, String destFormat){
		if(sourceFormat==null||source==null||sourceFormat==null) return "";
		try {
			ChoiceFormat sourceF=new ChoiceFormat(sourceFormat);
			NumberFormat destF=new ChoiceFormat(destFormat);
			return destF.format(sourceF.parse(source));
		} catch (Exception e) {
			LOGGER.warn("Can not transform obj="+source+" from "+sourceFormat+" to "+destFormat);
			LOGGER.warn(ExceptionBuilder.buildStack(e));
			return "";
		}
	}
	//-------instance constructor and also in java.text getInstance----
	
    public static Format getDecimalInstance(){
    	return new DecimalFormat();
    }
    public static Format getDecimalInstance(String pattern){
    	return new DecimalFormat(pattern);
    }
    public static Format getDecimalInstance(String pattern, DecimalFormatSymbols s){
    	return new DecimalFormat(pattern, s);
    }
    public static DecimalFormatSymbols newDecimalFormatSymbols(){
    	return new DecimalFormatSymbols();
    }
    public static DecimalFormatSymbols newDecimalFormatSymbols(Locale l){
    	return new DecimalFormatSymbols(l);
    }
    
    public static Format getChoiceInstance(double[] limits, String[] formats) {
    	return new ChoiceFormat(limits, formats);
    }
    public static Format getChoiceInstance(String newPattern) {
    	return new ChoiceFormat(newPattern);
    }
    
    public static Format getSimpleDateInstance(String newPattern) {
    	return new SimpleDateFormat(newPattern);
    }
    public static Format getSimpleDateInstance() {
    	return new SimpleDateFormat();
    }
    public static Format getSimpleDateInstance(String pattern, DateFormatSymbols formatSymbols) {
    	return new SimpleDateFormat();
    }
    public static Format getSimpleDateInstance(String pattern, Locale locale) {
    	return new SimpleDateFormat(pattern, locale);
    }
    
    public static DateFormatSymbols newDateFormatSymbols(){
    	return new DateFormatSymbols();
    }
    public static DateFormatSymbols newDateFormatSymbols(Locale l){
    	return new DateFormatSymbols(l);
    }
    
    public static Format getMessageInstance(String pattern, Locale locale){
    	return new MessageFormat(pattern, locale);
    }
    public static Format getMessageInstance(String pattern){
    	return new MessageFormat(pattern);
    }
    public static Date parseDate(String source, String format){
    	try {
			return new SimpleDateFormat(format).parse(source);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return null;
    }
    public static void main(String args[]){
    	System.out.println(transformDate("23:30:00", "hh:mm:ss", "h:mm aaa"));
    }
}