content: package com.alibaba.fastjson2.issues;
  
  import com.alibaba.fastjson2.JSON;
  import org.junit.jupiter.api.Test;
  
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  public class Issue525 {
      @Test
      public void test() {
          String str = "{\"qq\":123456789,\"name\":\"xxx\",\"req\":null,\"groups\":null,\"qqList\":null}";
          StartPack startPack = JSON.parseObject(str, StartPack.class);
          assertEquals(123456789, startPack.qq);
          assertEquals("xxx", startPack.name);
          assertNull(startPack.reg);
          assertNull(startPack.groups);
          assertNull(startPack.qqList);
      }
  
      public static class StartPack
              extends PackBase {
          /**
           * 插件名字
           */
          public String name;
          /**
           * 注册的事件
           */
          public List<Integer> reg;
          /**
           * 监听QQ群列表
           */
          public List<Long> groups;
          /**
           * 监听QQ号列表
           */
          public List<Long> qqList;
      }
  
      public abstract static class PackBase {
          /*
           * 运行QQ号
           */
          public long qq;
      }
  
      @Test
      public void test1() {
          String str = "{\"values\":null}";
          Bean1 bean = JSON.parseObject(str, Bean1.class);
          assertNull(bean.values);
      }
  
      public static class Bean1 {
          private List<Long> values;
  
          public List<Long> getValues() {
              return values;
          }
  
          public void setValues(List<Long> values) {
              this.values = values;
          }
      }
  
      @Test
      public void test2() {
          String str = "{\"values\":null}";
          Bean2 bean = JSON.parseObject(str, Bean2.class);
          assertNull(bean.values);
      }
  
      private static class Bean2 {
          private List<Long> values;
  
          public List<Long> getValues() {
              return values;
          }
  
          public void setValues(List<Long> values) {
              this.values = values;
          }
      }
  
      @Test
      public void test3() {
          String str = "{\"values\":null}";
          Bean3 bean = JSON.parseObject(str, Bean3.class);
          assertNull(bean.values);
      }
  
      public static class Bean3 {
          private List<Long> values;
  
          public List<Long> getValues() {
              return values;
          }
      }
  
      @Test
      public void test4() {
          String str = "{\"values\":null}";
          Bean4 bean = JSON.parseObject(str, Bean4.class);
          assertNull(bean.values);
      }
  
      public static class Bean4 {
          public List<String> values;
      }
  }
  