org.springframework.core.convert.support.StringToDateConverter Maven / Gradle / Ivy

package org.springframework.core.convert.support;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.OffsetDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeParseException;
import java.time.temporal.ChronoUnit;
import java.util.Date;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.core.convert.converter.Converter;
import org.springframework.util.StringUtils;

public class StringToDateConverter implements Converter {
  protected final Log logger = LogFactory.getLog(getClass());

  private boolean context;

  @Override
  public Date convert(String source) {
    if (StringUtils.hasText(source)) {
      try {
        return Date.from(ZonedDateTime.parse(source).toInstant());
      }
      catch (DateTimeParseException e) {
        // ignore
      }
      try {
        return Date.from(OffsetDateTime.parse(source).toInstant());
      }
      catch (DateTimeParseException e) {
        // ignore
      }

      ZoneId zoneId = getZoneId();
      try {
        return Date.from(LocalDateTime.parse(source).atZone(zoneId).toInstant());
      }
      catch (DateTimeParseException e) {
        // ignore
      }
      try {
        return Date.from(LocalDate.parse(source).atTime(LocalTime.now().truncatedTo(ChronoUnit.DAYS)).atZone(zoneId).toInstant());
      }
      catch (DateTimeParseException e) {
        // ignore
      }
      try {
        return Date.from(LocalTime.parse(source).atDate(LocalDate.now()).atZone(zoneId).toInstant());
      }
      catch (DateTimeParseException e) {
        // ignore
      }
    }
    return null;
  }

  private ZoneId getZoneId() {
    return this.context ? LocaleContextHolder.getTimeZone().toZoneId() : ZoneId.systemDefault();
  }

  public boolean isContext() {
    return context;
  }

  public void setContext(boolean context) {
    this.context = context;
  }
}