Java BeanUtilsBean : Convert Date to String

Question

I am trying to run BeanUtilsBean.getInstance().populate(...) but on the HTML form, there is a field that carries String representation of Date of Birth. The object bean has the field type of java.util.Date

Read some search from Ggl that have to build custom converters but not quite understand how to do that.

Anyone can help?

My code:

public static void main(String[] args) {
    Map<String, String[]> formData = new HashMap<String, String[]>();
    formData.put("email", new String[]{"[email protected]"});
    formData.put("firstName", new String[]{"danny"});
    formData.put("lastName", new String[]{"miller"});
    formData.put("dob", new String[]{"15-Apr-1980"});
    formData.put("userName", new String[]{"dannymiller"});
    try {
        Consumer consumer = new Consumer();
        DateTimeConverter dtConverter = new DateConverter();
        dtConverter.setPattern("dd/MMM/yyyy");

        ConvertUtilsBean convertUtilsBean = new ConvertUtilsBean();
        convertUtilsBean.deregister(Date.class);
        convertUtilsBean.register(dtConverter, Date.class);

        BeanUtilsBean beanUtilsBean = new BeanUtilsBean(convertUtilsBean, new PropertyUtilsBean());

        beanUtilsBean.populate(consumer, formData);


        if (consumer != null) {
            System.out.println(consumer.getEmail());
            System.out.println(consumer.getFirstName());
            System.out.println(consumer.getLastName());
            System.out.println(consumer.getDob());
            System.out.println(consumer.getUserName());
        }
    } catch  (Exception e) {
        e.printStackTrace();
    }

The return error:

Apr 22, 2011 11:14:45 PM org.apache.commons.beanutils.converters.DateTimeConverter toDate WARNING: DateConverter does not support default String to 'Date' conversion. Apr 22, 2011 11:14:45 PM org.apache.commons.beanutils.converters.DateTimeConverter toDate WARNING: (N.B. Re-configure Converter or use alternative implementation) Exception in thread "main" org.apache.commons.beanutils.ConversionException: DateConverter does not support default String to 'Date' conversion. at org.apache.commons.beanutils.converters.DateTimeConverter.toDate(DateTimeConverter.java:468) at org.apache.commons.beanutils.converters.DateTimeConverter.convertToType(DateTimeConverter.java:343) at org.apache.commons.beanutils.converters.AbstractConverter.convert(AbstractConverter.java:156) at org.apache.commons.beanutils.converters.ConverterFacade.convert(ConverterFacade.java:60) at org.apache.commons.beanutils.ConvertUtilsBean.convert(ConvertUtilsBean.java:470) at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:1008) at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:830) at com.ymatch.test.BeanTest.main(BeanTest.java:32)

Answer 1

Done using this method:

public Object populate(Object obj, HashMap<String, String[]> formData)
            throws IllegalAccessException, InvocationTargetException {
        ConvertUtils
                .register(new StringToDateConverter(), java.util.Date.class);
        BeanUtilsBean.getInstance().populate(obj, formData);
        return obj;
    }