Unable to convert String to Date by requestBody in spring

Question

I have the below Code :

DTO :

 Class MyDTO {
        import java.util.Date;
        private Date dateOfBirth;

        public Date g         


        

Answer 1

List itemCreate a class to extend JsonDeserializer

public class CustomJsonDateDeserializer extends JsonDeserializer<Date> {
    @Override
    public Date deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
        String date = jsonParser.getText();
        try {
            return format.parse(date);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }
}

Use @JsonDeserialize(using = CustomJsonDateDeserializer.class) annotation on setter methods.

Thanks @Varun Achar answer, url

Answer 2

@DateTimeFormat is for form backing (command) objects. Your JSON is processed (by default) by Jackson's ObjectMapper in Spring's MappingJackson2HttpMessageConverter (assuming the latest version of Jackson). This ObjectMapper has a number of default date formats it can handle. It seems yyyy-mm-dd is one of them, but dd-mm-yyyy is not.

You'll need to register your own date format with a ObjectMapper and register that ObjectMapper with the MappingJackson2HttpMessageConverter. Here are various ways to do that :

• Configuring ObjectMapper in Spring
• Spring, Jackson and Customization (e.g. CustomDeserializer)

Alternatively, you can use a JsonDeserializer on either your whole class or one of its fields (the date). Examples in the link below

• Right way to write JSON deserializer in Spring or extend it
• How to deserialize JS date using Jackson?