如何在java中强制JSON日期不接受整数

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.13.0</version>
</dependency>

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;

import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class CustomDateExample {

    public static class MyDate {
        @JsonSerialize(using = DateSerializer.class)
        @JsonDeserialize(using = DateDeserializer.class)
        private Date date;

        // Getters and setters
        public Date getDate() {
            return date;
        }

        public void setDate(Date date) {
            this.date = date;
        }
    }

    public static class DateSerializer extends JsonSerializer<Date> {
        private static final SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

        @Override
        public void serialize(Date value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
            gen.writeString(formatter.format(value));
        }
    }

    public static class DateDeserializer extends JsonDeserializer<Date> {
        private static final SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

        @Override
        public Date deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
            String dateStr = p.getText();
            try {
                return formatter.parse(dateStr);
            } catch (ParseException e) {
                throw new RuntimeException("Failed to parse date: " + dateStr, e);
            }
        }
    }

    public static void main(String[] args) throws IOException {
        MyDate myDate = new MyDate();
        myDate.setDate(new Date());

        ObjectMapper mapper = new ObjectMapper();
        String json = mapper.writeValueAsString(myDate);
        System.out.println("Serialized JSON: " + json);

        MyDate deserializedDate = mapper.readValue(json, MyDate.class);
        System.out.println("Deserialized Date: " + deserializedDate.getDate());
    }
}