JAX-RS - ParamConverter Examples

package com.logicbig.example;

import javax.ws.rs.ext.ParamConverter;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Date;

public class MyDateConverter implements ParamConverter<LocalDateTime> {
    @Override
    public LocalDateTime fromString(String value) {
        Date date = new Date(value);
        return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
    }

    @Override
    public String toString(LocalDateTime value) {
        return value.toString();
    }
}

package com.logicbig.example;

import javax.ws.rs.ext.ParamConverter;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class MyDateConverter implements ParamConverter<LocalDate> {
    @Override
    public LocalDate fromString(String value) {
        if (value == null || value.trim().isEmpty()) {
            return null;
        }
        return LocalDate.parse(value, DateTimeFormatter.ISO_LOCAL_DATE);
    }

    @Override
    public String toString(LocalDate value) {
        return value==null? "": value.toString();
    }
}