request2bean

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package cn.itcast.utils;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Map;import java.util.UUID;import javax.servlet.http.HttpServletRequest;import org.apache.commons.beanutils.BeanUtils;import org.apache.commons.beanutils.ConvertUtils;import org.apache.commons.beanutils.Converter;public class WebUtils {public static <T> T request2Bean(HttpServletRequest request,Class<T>  beanClass){try{T bean = beanClass.newInstance();//得到request里面所有数据Map map = request.getParameterMap();//map{name=aa,password=bb,birthday=1990-09-09}  bean(name=aa,password=dd,birthday=Date)ConvertUtils.register(new Converter(){public Object convert(Class type, Object value) {if(value==null){return null;}String str = (String) value;if(str.trim().equals("")){return null;}SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");try {return df.parse(str);} catch (ParseException e) {throw new RuntimeException(e);}}}, Date.class);BeanUtils.populate(bean, map);   return bean;}catch (Exception e) {throw new RuntimeException(e);}}public static String generateID(){return UUID.randomUUID().toString();}}
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