I have created a helper to parse time froma webservice and output inanother format
using #DateTimeFormat. However in my jsp view this is not formatted. Am I using this wrong?
#Component
public class DateParserHelper {
#DateTimeFormat(style="F-")
public Date getFormattedDate() {
return formattedDate;
}
public void setFormattedDate(Date formattedDate) {
this.formattedDate = formattedDate;
}
public Date formattedDate;
public void setDate(String date) throws ParseException {
DateFormatter dateFormatter = new DateFormatter("y-M-d");
setFormattedDate( dateFormatter.parse(date, UK));
}
}
If you are using JSTL in your jsp, you could use formatDate to format your date :
<fmt:formatDate value="${yourDate}" pattern="dd/MM/yyyy" />
Try SimpleDateFormat
String pattern = "MM/dd/yyyy";
...
public void setDate(String date) {
SimpleDateFormat format = new SimpleDateFormat(pattern);
setFormattedDate(format.parse(date));
}
Related
I am making a date filter for which I have created a custom method for date to be parse in specific date format.
I have date with to two formats dd MMM yyyy & yyyy-mm-dd which is passed in a single method to be parse and return in format of yyyy-mm-dd. As I have a complex structure at end both type of formatted string will go under the date parsing method.
ISSUE:: I am getting a blank string as return from this method when format is in yyyy-mm-dd. please provide me inputs of where i am wrong. Below is the code
//fetching date from methods
String current_date=CurrentFilterPeriod.dateParsing("2017-04-02");
String prev_date=CurrentFilterPeriod.dateParsing("01 Apr 2017");
//singleton file for date filter method
public class CurrentFilterPeriod {
private static Calendar cal = getInstance();
private static Date current_date = cal.getTime();
//defined formats for date
private static SimpleDateFormat formatter = new SimpleDateFormat("dd MMM yyyy");
private static SimpleDateFormat formatterString = new SimpleDateFormat("yyyy-MM-dd");
//method for parsing date
public static String dateParsing(String date){
Date newDate;
String returnDate = "";
if (date.equals(formatter.toPattern())){
returnDate=date;
}
Log.e("DB","date===>"+date);
try {
newDate = formatter.parse(date);
Log.e("DB","New Date===>"+newDate);
returnDate=formatterString.format(newDate);
Log.e("DB","returnDate===>"+returnDate);
} catch (ParseException e) {
e.printStackTrace();
}
return returnDate;
}
}
RESULT:: current_date="" prev_date="2017-04-01"
I am stuck here please help me or tell me other methods to get by desired output.Want result in format of yyyy-mm-dd
As you want result format like: yyyy-mm-dd. You need to check your Date String with formatterString formatter.
Change your code with:
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
boolean isValidDate(String input) {
try {
format.parse(input);
return true;
}
catch(ParseException e){
return false;
}
}
Now call the method using:
//method for parsing date
public static String dateParsing(String date) {
Date newDate;
String returnDate = "";
if (isValidDate(date)) {
returnDate = date;
return returnDate;
} else {
Log.e("DB", "date===>" + date);
try {
newDate = formatter.parse(date);
Log.e("DB", "New Date===>" + newDate);
returnDate = formatterString.format(newDate);
Log.e("DB", "returnDate===>" + returnDate);
} catch (ParseException e) {
e.printStackTrace();
}
}
return returnDate;
}
So I want to format my dateinputfield as "dd-MM-yyyy" and then validate that the date is not before tomorrow.
This is the relevant code in my view:
<h:inputText id="dueDate" required="true" value="#{submitRepairBean.dueDate}">
<f:convertDateTime pattern="dd-MM-yyyy"/>
<f:validator validatorId="be.kdg.repaircafe.validators.DueDateValidator"/>
</h:inputText>
This is my custom validator:
#FacesValidator("be.kdg.repaircafe.validators.DueDateValidator")
public class DueDateValidator implements Validator {
#Override
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
System.out.println(value.toString()); //For some reason this prints Wed Jul 23 02:00:00 CEST 2014 when inputting 23-07-2014
DateTime date = new DateTime(value.toString());
long dueDateMillis = date.getMillis();
long oneDayMillis = 86400000;
Calendar tomorrowMidnight = new GregorianCalendar();
// reset hour, minutes, seconds and millis
tomorrowMidnight.set(Calendar.HOUR_OF_DAY, 0);
tomorrowMidnight.set(Calendar.MINUTE, 0);
tomorrowMidnight.set(Calendar.SECOND, 0);
tomorrowMidnight.set(Calendar.MILLISECOND, 0);
tomorrowMidnight.add(Calendar.DAY_OF_MONTH, 1);
if (dueDateMillis + oneDayMillis < tomorrowMidnight.getTimeInMillis()) {
throw new ValidatorException(new FacesMessage("You can not have something repaired before tomorrow!"));
}
}
Now the thing I don't understand is why it doesn't print in the converted format (dd-MM-yyyy), even then I don't care so much as long as I get the correct amount of milliseconds.
However, the DateTime constructor then throws an exception that the date is in an invalid format.
I've tried using SimpleDateFormat as well, with no luck.
The converter it will show you the date in this format on the page (in the jsp/html page). What it does, is converting the date in a string in the format dd-mm-yyyy. When you pass the calue in the validate function, it is not converted in the string in the format dd-MM-yyyy. it is a date, dueDate is a date, so by printing value.toString() is just converts the date value to a string. So the object is a date and just by casting to Date is should work. if you want in the code to print it in the format dd-MM-yyyy try this
Date date = (Date) value;
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
String strDate = sdf.format(date);
System.out.println(strDate );
#FacesValidator("validator.dateValidator")
public class DateValidator implements Validator, ClientValidator {
final static String DATE_FORMAT = "dd-MM-yyyy";
public DateValidator() {
}
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
if (value == null || StringUtils.isEmpty((String) value.toString())) {
return;
}
SimpleDateFormat objDf = new SimpleDateFormat(DATE_FORMAT);
objDf.setLenient(false);
try {
try {
Date data = new Date();
data.setDate(data.getDate() + 1);
if(objDf.parse(value.toString()).before(data)){
((UIInput) component).setValid(false);
throw new ValidatorException(new FacesMessage("You can not have something repaired before tomorrow!"));
}
} catch (ParseException e) {
((UIInput) component).setValid(false);
throw new ValidatorException(new FacesMessage(MessageUtils.ALERTA, "Data informada não Válida!", ""));
}
} catch (ParseException e) {
throw new ValidatorException(new FacesMessage("Invalid Date!"));
}
}
public Map<String, Object> getMetadata() {
return null;
}
public String getValidatorId() {
return "validator.dateValidator";
}
}
public class DateCreation {
public static void main(String[] args) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date = new Date();
String format = sdf.format(date);
System.out.print("date is:"+format);
}
}
This is working fine and output is: date is:2014-02-11
But when I use same syntax in Service layer of spring MVC than it results as:
date is:????-??-??
Here is code in spring. There is an #Override function in which I have used it.
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date = new Date();
String format = sdf.format(date);
logger.info("current date is:"+format);
What could be the error?
#InitBinder
public void initBinder(WebDataBinder webDataBinder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
dateFormat.setLenient(false);
webDataBinder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}
i am new to springMVC ,today i write a DateConverter
like this
public class DateConverter implements Converter<String,Date>{
private String formatStr = "";
public DateConverter(String fomatStr) {
this.formatStr = formatStr;
}
public Date convert(String source) {
SimpleDateFormat sdf = null;
Date date = null;
try {
sdf = new SimpleDateFormat(formatStr);
date = sdf.parse(source);
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
}
then i write a controller like this
#RequestMapping(value="/converterTest")
public void testConverter(Date date){
System.out.println(date);
}
congfigure it to applicationContext,i am sure the DateConverter has been initialized correctly,when i test my converter with
http://localhost:8080/petStore/converterTest?date=2011-02-22
the browser says:
HTTP Status 400 -
type Status report
message
description The request sent by the client was syntactically incorrect ().
somebody could help me with it? thanks in advance
You have a typo in your converter. You misspelled the constructor param, so the assignment has no effect. Instead of:
public DateConverter(String fomatStr) {
this.formatStr = formatStr;
}
try:
public DateConverter(String formatStr) {
this.formatStr = formatStr;
}
There may be other issues, but at a minimum you'll want to fix that. I'm assuming you are using yyyy-MM-dd for your date format?
Is it possible to handle different date format in a Spring MVC controller?
I know that setting something like this
#InitBinder
protected void initBinder(WebDataBinder binder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
binder.registerCustomEditor(Date.class, new CustomDateEditor(
dateFormat, false));
}
I can handle dd/MM/yyyy format, but what if i want to parse also dates in yyyyMMddhhmmss format? Should I add multiple CustomDateEditors in my controller?
If you need it only at puntual cases, you can register the custom editor attached to a field in the form:
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy", this.getLocale(context));
DateFormat dateTimeFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss SSS", this.getLocale(context));
binder.registerCustomEditor(Date.class, new CustomDateEditor(dateTimeFormat, true));
binder.registerCustomEditor(Date.class, "name.of.input", new CustomDateEditor(dateTimeFormat, true));
Inspired by Skipy
public class LenientDateParser extends PropertyEditorSupport {
private static final List<String> formats = new ArrayList<String>();
private String outputFormat;
static{
formats.add("dd-MM-yyyy HH:ss");
formats.add("dd/MM/yyyy HH:ss");
formats.add("dd-MM-yyyy");
formats.add("dd/MM/yyyy");
formats.add("dd MMM yyyy");
formats.add("MMM-yyyy HH:ss");
formats.add("MMM-yyyy");
formats.add("MMM yyyy");
}
public LenientDateParser(String outputFormat){
this.outputFormat = outputFormat;
}
#Override
public void setAsText(String text) throws IllegalArgumentException {
if(StringUtils.isEmpty(text))
return;
DateTime dt = null;
for(String format : formats){
try{
dt = DateTime.parse(text, DateTimeFormat.forPattern(format));
break;
}catch(Exception e){
if(log.isDebugEnabled())
log.debug(e,e);
}
}
if(dt != null)
setValue(dt.toDate());
}
#Override
public String getAsText() {
Date date = (Date) getValue();
if(date == null)
return "";
DateTimeFormatter f = DateTimeFormat.forPattern(outputFormat);
return f.print(date.getTime());
}
}
How about this. the above can go out of whack pretty soon.
public class MostLenientDateParser {
private final List<String> supportedFormats;
public MostLenientDateParser(List<String> supportedFormats) {
this.supportedFormats = supportedFormats;
}
public Date parse(String dateValue) {
for(String candidateFormat: supportedFormats) {
Date date = lenientParse(dateValue, candidateFormat);
if (date != null) {
return date;
}
}
throw new RuntimeException("tried so many formats, non matched");
}
private Date lenientParse(String dateCandidate, String dateFormat) {
try {
return new SimpleDateFormat(dateFormat).parse(dateCandidate);
} catch (Exception e) {
return null;
}
}
}
This could also be referenced through Spring Converters via a CustomDateEditor implementation for form-data binding.
For others having the same question, if you are using spring 3 You can use the awesome #DateTimeFormat(pattern="dd-MM-yyyy") in the field of your model.
Just make sure to register a conversionService with your org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter
You can have as much as you want of #DateTimeFormat in the same bean.
If at a time you receive only one format of date, then you could simply create one instance of DateFormat based on format
for example
Decide the format based on the input
DateFormat df = null;
if(recievedDate.indexOf("//")!=-1){
df = new SimpleDateFormat("dd/MM/yyyy")
}else{
df = new SimpleDateFormat("yyyyMMddhhmmss")
}
Not a great idea to have lenient date formatters when dealing with multiple locales. A date like 10/11/2013 will get parsed correctly with both dd/MM/YYYY and MM/dd/YYYY