content: package com.alibaba.fastjson2.issues;
  
  import com.alibaba.fastjson2.JSON;
  import com.alibaba.fastjson2.JSONWriter;
  import com.alibaba.fastjson2.annotation.JSONField;
  import lombok.AccessLevel;
  import lombok.ToString;
  import lombok.Value;
  import lombok.With;
  import lombok.experimental.NonFinal;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class Issue923 {
      @Test
      public void test() {
          Bean bean = new Bean("DataWorks", 101, 102, new String[]{"abc"});
          String str = JSON.toJSONString(bean);
          assertEquals("{\"age\":101,\"name\":\"DataWorks\",\"score\":102.0,\"tags\":[\"abc\"]}", str);
          Bean bean1 = JSON.parseObject(str, Bean.class);
          assertEquals(bean.age, bean1.age);
          assertEquals(bean.name, bean1.name);
          assertEquals(bean.score, bean1.score);
          assertArrayEquals(bean.tags, bean1.tags);
      }
  
      @Value
      public static class Bean {
          String name;
          @With(AccessLevel.PACKAGE)
          @NonFinal
          int age;
          double score;
          protected String[] tags;
  
          @ToString(includeFieldNames = true)
          @Value(staticConstructor = "of")
          public static class Exercise<T> {
              String name;
              T value;
          }
      }
  
      @Test
      public void test1() {
          Bean1 bean = new Bean1(101);
          String str = JSON.toJSONString(bean);
          assertEquals("{\"ID\":101}", str);
      }
  
      @Value
      public static class Bean1 {
          @JSONField(name = "ID")
          int id;
      }
  
      @Test
      public void test2() {
          String json = "{\"id\":1, \"name\":\"Name\", \"user_name\":\"User name\"}";
          User object = JSON.parseObject(json, User.class);
          assertEquals(1, object.id);
          assertEquals("Name", object.name);
          assertEquals("User name", object.userName);
  
          String result = JSON.toJSONString(object, JSONWriter.Feature.WriteNulls);
          assertEquals("{\"id\":1,\"name\":\"Name\",\"user_name\":\"User name\"}", result);
      }
  
      @Value
      public class User {
          @JSONField(name = "id")
          int id;
          @JSONField(name = "name")
          String name;
          @JSONField(name = "user_name")
          String userName;
      }
  }
  