mybatis 序列化缓存 java对象

 

 

 

序列化缓存
* 用途是先将对象序列化成2进制，再缓存,好处是将对象压缩了，省内存
* 坏处是速度慢了

private byte[] serialize(Serializable value) {
  try {
      //序列化核心就是ByteArrayOutputStream
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(bos);
    oos.writeObject(value);
    oos.flush();
    oos.close();
    return bos.toByteArray();
  } catch (Exception e) {
    throw new CacheException("Error serializing object.  Cause: " + e, e);
  }
}

　　

 

 

 private Serializable deserialize(byte[] value) {
    Serializable result;
    try {
        //反序列化核心就是ByteArrayInputStream
      ByteArrayInputStream bis = new ByteArrayInputStream(value);
      ObjectInputStream ois = new CustomObjectInputStream(bis);
      result = (Serializable) ois.readObject();
      ois.close();
    } catch (Exception e) {
      throw new CacheException("Error deserializing object.  Cause: " + e, e);
    }
    return result;
  }