content: package com.alibaba.json.bvt.bug;
  
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import junit.framework.TestCase;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.serializer.SerializerFeature;
  
  public class Bug_for_xuzebin extends TestCase {
  
      public void testMap() {
          P p = new P();
          p.setI(2);
          p.getMap().put("a", "b");
          String json = JSON.toJSONString(p, SerializerFeature.WriteClassName);
          System.out.println(json);
  
          P x = JSON.parseObject(json, P.class);
          System.out.println(JSON.toJSONString(x));
      }
  
      public void testMap2() {
          P p = new P();
          p.setI(2);
          // p.getMap().put("a", "b");
          String json = JSON.toJSONString(p, SerializerFeature.WriteClassName);
          System.out.println(json);
  
          P x = JSON.parseObject(json, P.class);
          System.out.println(JSON.toJSONString(x));
      }
  
      public static class P {
  
          private Map<String, String> map = new ConcurrentHashMap<String, String>();
          private int                 i   = 0;
  
          public Map<String, String> getMap() {
              return map;
          }
  
          public void setMap(Map<String, String> map) {
              this.map = map;
          }
  
          public int getI() {
              return i;
          }
  
          public void setI(int i) {
              this.i = i;
          }
  
      }
  }
  