public class Date2LongSerializer extends JsonSerializer<Date> {

    @Override

    public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {

        jsonGenerator.writeNumber(date.getTime()/1000);

    }

}

    /**

     * 创建时间

     */

    @JsonSerialize(using = Date2LongSerializer.class)

    private Date createTime;

    /**

     * 更新时间

     */

    @JsonSerialize(using = Date2LongSerializer.class)

    private Date updateTime;