content: package com.alibaba.fastjson.v2issues;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.annotation.JSONField;
  import org.junit.jupiter.api.Test;
  
  import java.util.Date;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class Issue460 {
      @Test
      public void test() {
          Bean bean = new Bean();
          bean.date = new Date(1655097829796L);
          String str = JSON.toJSONString(bean);
          assertEquals("{\"date\":1655097829796}", str);
  
          Bean bean1 = JSON.parseObject(str, Bean.class);
          assertEquals(bean.date.getTime(), bean1.date.getTime());
          Bean bean2 = JSON.parseObject(str).toJavaObject(Bean.class);
          assertEquals(bean.date.getTime(), bean2.date.getTime());
      }
  
      public static class Bean {
          public Date date;
      }
  
      @Test
      public void test1() {
          Bean1 bean = new Bean1();
          bean.date = new Date(1655097829796L);
          String str = JSON.toJSONString(bean);
          assertEquals("{\"date\":1655097829796}", str);
  
          Bean1 bean1 = JSON.parseObject(str, Bean1.class);
          assertEquals(bean.date.getTime(), bean1.date.getTime());
          Bean1 bean2 = JSON.parseObject(str).toJavaObject(Bean1.class);
          assertEquals(bean.date.getTime(), bean2.date.getTime());
      }
  
      public static class Bean1 {
          @JSONField(format = "millis")
          public Date date;
      }
  
      @Test
      public void test2() {
          Bean2 bean = new Bean2();
          bean.date = new Date(1655097829796L);
          String str = JSON.toJSONString(bean);
          assertEquals("{\"date\":1655097829}", str);
  
          Bean2 bean1 = JSON.parseObject(str, Bean2.class);
          assertEquals(1655097829000L, bean1.date.getTime());
          Bean2 bean2 = JSON.parseObject(str).toJavaObject(Bean2.class);
          assertEquals(1655097829000L, bean2.date.getTime());
      }
  
      public static class Bean2 {
          @JSONField(format = "unixtime")
          public Date date;
      }
  }
  