content: package com.alibaba.json.bvt.writeClassName;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.TreeMap;
  
  import junit.framework.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.serializer.SerializerFeature;
  
  public class MapTest extends TestCase {
  
      public void test_map() throws Exception {
          VO vo = new VO();
          vo.getValue().put("1", "AA");
          
          String text = JSON.toJSONString(vo, SerializerFeature.WriteClassName);
          
          System.out.println(text);
          
          VO vo2 = (VO) JSON.parse(text);
          
          Assert.assertEquals(vo.getValue(), vo2.getValue());
      }
      
      public void test_map_2() throws Exception {
          VO vo = new VO();
          vo.setValue(new TreeMap<String, Object>());
          vo.getValue().put("1", "AA");
          
          String text = JSON.toJSONString(vo, SerializerFeature.WriteClassName);
          
          System.out.println(text);
          
          VO vo2 = (VO) JSON.parse(text);
          
          Assert.assertEquals(vo.getValue(), vo2.getValue());
      }
  
      private static class VO {
  
          private Map<String, Object> value = new HashMap<String, Object>();
  
          public Map<String, Object> getValue() {
              return value;
          }
  
          public void setValue(Map<String, Object> value) {
              this.value = value;
          }
  
      }
  }
  