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java 反射&泛型相关技巧

• 获得继承的接口泛型的类型代码

  Type[] types = listener.getClass().getGenericInterfaces();
  ParameterizedType parameterized = (ParameterizedType) types[0];
  Class<T> clazz = (Class<T>) parameterized.getActualTypeArguments()[0];
  

• 获得类泛型接口实现

   Class<T> tClass = (Class<T>)((ParameterizedType)getClass().getGenericSuperclass()).getActualTypeArguments()[0];