content: package com.alibaba.json.bvt.issue_3500;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.annotation.JSONField;
  import com.alibaba.fastjson.annotation.JSONType;
  import com.alibaba.fastjson.serializer.SerializerFeature;
  import junit.framework.TestCase;
  
  public class Issue3571 extends TestCase {
      public void test_for_issue() throws Exception {
          Bean1 bean = new Bean1();
          bean.id1 = 101;
          bean.id2 = 102;
          bean.id3 = 103;
  
          assertEquals("{\"id1\":101,\"id2\":102,\"id3\":103}", JSON.toJSON(bean).toString());
      }
  
      public void test_for_issue_2() throws Exception {
          Bean2 bean = new Bean2();
          bean.id1 = 101;
          bean.id2 = 102;
          bean.id3 = 103;
  
          assertEquals("{\"id1\":101,\"id2\":102,\"id3\":103}", JSON.toJSON(bean).toString());
      }
  
      @JSONType(serialzeFeatures = SerializerFeature.SortField)
      public static class Bean1 {
          public int id2;
          public int id1;
          public int id3;
      }
  
      @JSONType(serialzeFeatures = SerializerFeature.MapSortField)
      public static class Bean2 {
          public int id2;
          public int id1;
          public int id3;
      }
  }
  