//获得表单数据

        Map<String, String[]> properties = request.getParameterMap();

        User user = new User();

        try {

            //自己指定一个类型转换器（将String转成Date）

            ConvertUtils.register(new Converter() {

                @Override

                public Object convert(Class clazz, Object value) {

                    //将string转成date

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

                    Date parse = null;

                    try {

                        parse = format.parse(value.toString());

                    } catch (ParseException e) {

                        e.printStackTrace();

                    }

                    return parse;

                }

            }, Date.class);

            //映射封装

            BeanUtils.populate(user, properties);

        } catch (IllegalAccessException | InvocationTargetException e) {

            e.printStackTrace();

        }