content: package com.alibaba.fastjson2.issues_1000;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.fastjson2.JSONReader;
  import com.alibaba.fastjson2.JSONWriter;
  import org.junit.jupiter.api.Test;
  
  import java.util.ArrayList;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  public class Issue1069 {
      @Test
      public void test() {
          UserAttrActionInfo bean = new UserAttrActionInfo();
          Map<Integer, List<Long>> map = new LinkedHashMap<>();
          List<Long> list = new ArrayList<>();
          list.add(1L);
          list.add(2L);
          list.add(3L);
          list.add(4L);
          map.put(1234, list);
          bean.tagInfos = map;
  
          //序列化然后再反序列化会出错，但类似的代码在fastjson1上运行正常
          String strJson = JSON.toJSONString(bean, JSONWriter.Feature.WriteClassName);
          System.out.println("strJson=" + strJson);
          UserAttrActionInfo bean1 = JSON.parseObject(strJson, UserAttrActionInfo.class, JSONReader.Feature.SupportAutoType);
          assertNotNull(bean1);
          assertNotNull(bean1.tagInfos);
          assertEquals(bean.tagInfos.getClass(), bean1.tagInfos.getClass());
      }
  
      private static class UserAttrActionInfo {
          public Map<Integer, List<Long>> tagInfos;
          public UserAttrActionInfo() {}
      }
  }
  