content: package com.alibaba.fastjson2.issues_1000;
  
  import com.alibaba.fastjson2.JSON;
  import lombok.Builder;
  import lombok.Data;
  import org.junit.jupiter.api.Test;
  
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class Issue1356 {
      @Test
      public void test() {
          String str = "{\"flag\":false,\"pSsrc\":1,\"pUserId\":\"\",\"map\":\"\"}";
          Bean bean = JSON.parseObject(str, Bean.class);
          assertNull(bean.map);
      }
  
      @Data
      @Builder
      public static class Bean {
          private int pSsrc;
          private String pUserId;
          private boolean flag;
  
          private Map<String, String> map;
  
          public Bean(int pSsrc, String pUserId, boolean flag, Map<String, String> map) {
              super();
              this.pSsrc = pSsrc;
              this.pUserId = pUserId;
              this.flag = flag;
              this.map = map;
          }
      }
  
      @Test
      public void test1() {
          String str = "{\"map\":\"\"}";
          Bean1 bean = JSON.parseObject(str, Bean1.class);
          assertTrue(bean.map.isEmpty());
      }
  
      public static class Bean1 {
          public Map map;
      }
  
      @Test
      public void test2() {
          String str = "{\"map\":\"\"}";
          Bean2 bean = JSON.parseObject(str, Bean2.class);
          assertNull(bean.map);
      }
  
      public static class Bean2 {
          public Map<String, Integer> map;
      }
  }
  