package cn.converters;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.regex.Pattern;

import org.springframework.beans.TypeMismatchException;

import org.springframework.core.convert.converter.Converter;

/**

 *

 * @author 景佩佩

 *

 *S:Source 源类型

 *T:Target 目标类型

 */

public class DateConverter implements Converter<String, Date> {

    public Date convert(String source) {

        //SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");

        SimpleDateFormat sdf=getDateFormat(source);

        try {

            return sdf.parse(source);

        } catch (ParseException e) {

            //e.printStackTrace();

        }

        return null;

    }

    private SimpleDateFormat getDateFormat(String source){

        //一个字符串和一个特定形式能否匹配，正则

        SimpleDateFormat sdf=new SimpleDateFormat();

        if (Pattern.matches("^\\d{4}-\\d{2}-\\d{2}$", source)) {

            sdf=new SimpleDateFormat("yyyy-MM-dd");

        }else if (Pattern.matches("^\\d{4}/\\d{2}/\\d{2}$", source)) {

            sdf=new SimpleDateFormat("yyyy/MM/dd");

        }else if (Pattern.matches("^\\d{4}\\d{2}\\d{2}$", source)) {

            sdf=new SimpleDateFormat("yyyyMMdd");

        }

        return sdf;

    }

}