Question

反序列化方法：

override def deserialize(bytes: ByteBuffer, protocolVersion: ProtocolVersion): UserType = {

Option(bytes) match {
  case Some(value) if value.remaining == 0 =>
    throw new Exception(s"Cannot Deserialize empty bytes Array!!!! $this.getClass")
  case Some(value) =>
    val byteArray = new Array[Byte](bytes.remaining)
    bytes.duplicate.get(byteArray)
    objectMapper.readValue[java.util.List[UserType]] (byteArray, classOf[java.util.List[UserType]] ).get(0)
  case _ =>
    null
}

}

我能够通过自定义编解码器读取列的字节。但是，其反序列化失败并显示错误

java.io.CharConversionException：无效的UTF-32字符0x314c5555 （0x0010ffff以上）在char＃3，字节＃15）在 com.fasterxml.jackson.core.io.UTF32Reader.reportInvalid（UTF32Reader.java:195）在 com.fasterxml.jackson.core.io.UTF32Reader.read（UTF32Reader.java:158）在 com.fasterxml.jackson.core.json.ReaderBasedJsonParser._loadMore（ReaderBasedJsonParser.java:250）在 com.fasterxml.jackson.core.json.ReaderBasedJsonParser._skipWSOrEnd（ReaderBasedJsonParser.java:2354）在 com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken（ReaderBasedJsonParser.java:672）在 com.fasterxml.jackson.databind.ObjectMapper._initForReading（ObjectMapper.java:4340）在 com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose（ObjectMapper.java:4189）在 com.fasterxml.jackson.databind.ObjectMapper.readValue（ObjectMapper.java:3266）

我如何反序列化接收到的字节？

cassandra中的类型定义为

CREATE TYPE canada_catalog.UserType (id text, flag1 BOOLEAN,flag2 BOOLEAN);

Cassandra列的类型为frozen<list<frozen<usertype>>>

从datastax驱动程序中的cassandra查询输出反序列化List <UserType>的列时出错

0 个答案: