我是用python作服务器，发送数据到Android客户端。用的是同一个.proto文件分别用--python跟--java指令生成协议，分别添加到python跟Android。
但是Android端一直解析错误，错误提示如下： Caused by: com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).
google了半天没找到正确的解决方法，请大神帮忙看看。以下是代码：

python代码：
entity = SubscribeRespProto_pb2.SubscribeRespProto()
entity.subReqID = 1
entity.userName = "H2901"
entity.productName = "qao"
entity.address = "guangzhou"
content = entity.SerializeToString()
print(str(entity))
proto.transport.write(content)

Android端用的是Netty4.1.5，关键代码如下：
Bootstrap bootstrap = new Bootstrap();
bootstrap.group(eventLoopGroup)
.channel(NioSocketChannel.class)
.option(ChannelOption.SO_KEEPALIVE, true)
.handler(new ChannelInitializer() {
@Override
protected void initChannel(SocketChannel socketChannel) throws Exception {
socketChannel.pipeline().addLast(new ProtobufVarint32FrameDecoder())
.addLast(new ProtobufDecoder(SubscribeReqProto.SubscribeReq.getDefaultInstance()))
.addLast(new ProtobufVarint32LengthFieldPrepender())
.addLast(new ProtobufEncoder())
.addLast(new SubReqClientHandler());
}
});
channelFuture = bootstrap.connect(Constants.IP, Constants.PORT).sync();

.proto文件如下:
message SubscribeRespProto{
required int32 subReqID = 1;
required string userName = 2;
required string productName = 3;
required string address = 4;
}

Zanciscoco

netty服务器端，主送发送指令，如果对方客户端未收到，如何设置重新发送？？

2条回答

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