content: package com.alibaba.json.bvt.bug;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.TypeReference;
  import junit.framework.TestCase;
  
  import java.io.Serializable;
  import java.lang.reflect.Type;
  import java.util.Map;
  
  /**
   * Created by wenshao on 02/07/2017.
   */
  public class Issue569 extends TestCase {
      public void test_for_issue() throws Exception {
          String jsonString = "{\"backingMap\":{\"a\":{\"b\":{}}}}";
          Type type = new TypeReference<MyTable<String, String, MyValue>>() {}.getType();
          MyTable<String, String, MyValue> table = JSON.parseObject(jsonString, type);
  
          Map<String, MyValue> valueMap = table.backingMap.get("a");
          assertNotNull(valueMap);
  
          MyValue value = valueMap.get("b");
          assertNotNull(value);
      }
  
      public static class MyTable<R, C, V> implements Serializable {
          private Map<R, Map<C, V>> backingMap;
  
          public Map<R, Map<C, V>> getBackingMap() {
              return backingMap;
          }
  
          public void setBackingMap(Map<R, Map<C, V>> backingMap) {
              this.backingMap = backingMap;
          }
      }
  
      public static class MyValue {
  
      }
  }
  