CODEWITHSUNDEEP
javaspring
robin
robin

Reputation: 1925

Arabic date conversion issue in java

I have a bean class like 

import org.springframework.format.annotation.DateTimeFormat;
import java.time.LocalDate;

public class Form {
    private String name;
    private Long numID;
    private String Address;
    @DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
    private LocalDate date1;

    // getters and setters

}

This is used in a rest controller class 

import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;


public class MyController {

    private String MY_URL = "/model.do"
    @RequestMapping(value = {MY_URL}, method = RequestMethod.POST)
    @ResponseBody
    Public Model getModelType(@ModelAttribute Form myForm){

    }


}

now when I pass a arabic date object which is encoded like

%D9%A2%D9%A0%D9%A1%D9%A9-%D9%A0%D9%A4-%D9%A1%D9%A5, the conversion is failing with the below error

org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors Field error in object 'form' on field 'date1': rejected value [????-??-??]; codes [typeMismatch.form.date1,typeMismatch.isoCheckInDate,typeMismatch.java.time.LocalDate,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [form.isoCheckInDate,isoCheckInDate]; arguments []; default message [isoCheckInDate]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.time.LocalDate' for property 'date1'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.format.annotation.DateTimeFormat java.time.LocalDate] for value '????-??-??'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [????-??-??]]

Any idea how can to handle this type of scenario ?

Upvotes: 0

Views: 283

Answers (1)

Anonymous
Anonymous

Reputation: 86286

While I don’t know what Spring Framework has done and why, I can show you how to parse your string in plain Java:

    DecimalStyle defaultDecimalStyle
            = DateTimeFormatter.ISO_LOCAL_DATE.getDecimalStyle();
    DateTimeFormatter arabicDateFormatter = DateTimeFormatter.ISO_LOCAL_DATE
            .withDecimalStyle(defaultDecimalStyle.withZeroDigit('\u0660'));

    String encodedArabicDateStr = "%D9%A2%D9%A0%D9%A1%D9%A9-%D9%A0%D9%A4-%D9%A1%D9%A5";
    String arabicDateStr
            = URLDecoder.decode(encodedArabicDateStr, StandardCharsets.UTF_8);
    LocalDate date = LocalDate.parse(arabicDateStr, arabicDateFormatter);
    System.out.println("Parsed date: " + date);

Output from this snippet is:

Parsed date: 2019-04-15

The only trick is to tell the formatter to parse Arabic digits. When we tell it the zero digit (٠ or '\u0660'), it figures out the other digits.

Upvotes: 2

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