我正在尝试序列化和反序列化 protobuf 消息。按照 documentation 中的示例，我写:
ByteArrayOutputStream out = new ByteArrayOutputStream(...);
ArrayList<AddressBookProtos.Person> messages = ...;
for (int i = 0; i < messages.size; i++){
messages.writeTo(out);
out.flush();
}
out.close();
当读回消息时，我希望写:
ByteArrayInputStream in = new ByteArrayInputStream(...);
ArrayList<AddressBookProtos.Person> messages = new ArrayList<...>();
while (in.available() > 0) {
messages.add(AddressBookProtos.Person.parseFrom(in));
}
但是，我总是只返回一个结果。其他结果去哪儿了？
最佳答案
你必须使用 writeDelimitedTo/parseDelimitedFrom 或实现您自己的基于定界符的解决方案。
根据 javadoc:
... writes the size of the message as a varint before writing the data. This allows more data to be written to the stream after the message without the need to delimit the message data yourself. Use
MessageLite.Builder.mergeDelimitedFrom(InputStream)(or the static methodYourMessageType.parseDelimitedFrom(InputStream)) to parse messages written by this method.
关于java - Protocol Buffer : reading all serialized messages from file，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39252479/