content: package com.alibaba.json.bvt.issue_2800;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONObject;
  import com.alibaba.fastjson.annotation.JSONField;
  import junit.framework.TestCase;
  import lombok.Data;
  
  import java.sql.Timestamp;
  import java.util.Locale;
  import java.util.TimeZone;
  
  public class Issue2894 extends TestCase {
      protected void setUp() throws Exception {
          JSON.defaultTimeZone = TimeZone.getDefault();
          JSON.defaultLocale = Locale.CHINA;
      }
  
      public void test_for_issue() throws Exception {
          String json = "{\"timestamp\":\"2019-09-19 08:49:52.350000000\"}";
          Pojo pojo = JSONObject.parseObject(json, Pojo.class);
          int nanos = pojo.timestamp.getNanos();
          assertEquals(nanos, 350000000);
          assertEquals("{\"timestamp\":\"2019-09-19 08:49:52.000000350\"}", JSON.toJSONString(pojo));
      }
  
      public static class Pojo {
          @JSONField(name = "timestamp", format = "yyyy-MM-dd HH:mm:ss.SSSSSSSSS")
          public Timestamp timestamp;
      }
  }
  