cn.leancloud.gson.GsonUTCDateAdapter Maven / Gradle / Ivy

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package cn.leancloud.gson;

import cn.leancloud.utils.StringUtil;
import com.google.gson.*;

import java.lang.reflect.Type;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

public class GsonUTCDateAdapter implements JsonSerializer, JsonDeserializer {

  private final DateFormat dateFormat;

  public GsonUTCDateAdapter() {
    dateFormat = new SimpleDateFormat(StringUtil.dateFormat, Locale.getDefault());
    dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
  }

  @Override
  public synchronized JsonElement serialize(Date date, Type type,
                                            JsonSerializationContext jsonSerializationContext) {
    return new JsonPrimitive(dateFormat.format(date));
  }

  @Override
  public synchronized Date deserialize(JsonElement jsonElement,Type type,
                                       JsonDeserializationContext jsonDeserializationContext) {
    try {
      return dateFormat.parse(jsonElement.getAsString());
    } catch (ParseException e) {
      throw new JsonParseException(e);
    }
  }
}