SpringMVC封装数据的类型转化器( Date)

//自定义的类<!--自定义类型转化器,一定要指定泛型,从第一个参数转化成第二个参数-->public class MyDateConverter implements Converter<String,Date>{    private SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");    @Override    public Date convert(String s){        if(s!=null&&!s.equals("")){            Date date = sfd.parse(s);            return date;        }    }    return null'}//springmvc.xml<!--告诉springmvc我们自定义的类型转化器--><bean id="conversionServiceFactoryBean" class="FormattingConversionServiceFactoryBean">    <property name="converters">        <set>            <bean class=""MyDateConverter></bean>        </set>    </property></bean><!--注解不会自动去找转化器,所以还要告诉注解,指定自定义的转化器--> <mvc:annotation-driven conversion-service="conversionServiceFactoryBean"></mvc:annotation-driven>