如何将protobuf base64字符串解码为js对象

Question

我正在尝试将来自服务器端（base64 字符串）的 protobuf 消息解码为 javascript 对象。用于解码 protobuf.js.

正如医生建议的那样：

var builder = ProtoBuf.newBuilder({ convertFieldsToCamelCase: true });
var YourMessage = builder.build("YourMessage");
var buffer = ...; // E.g. a buffer received on a WebSocket
var myMessage = YourMessage.decode(buffer);
...
var b64str = ...; // E.g. a string fetched via AJAX
var myMessage = YourMessage.decode64(b64str);

我就是这样做的（数据 - base64 字符串）：

var proto = dcodeIO.ProtoBuf;
var buffer = dcodeIO.ByteBuffer;
var b = buffer.wrap(data,"binary");
var builder = proto.newBuilder({ convertFieldsToCamelCase: true });
builder.define("Events");
var message = builder.build("Events");
var result = message.decode(b); //also try to decode base64 string - message.decode64(data);

我收到错误

decode/decode64 undefined

Answer 1

缺少导入原型定义的行，如下所示（其中 tests/example1.proto 是您的文件名）

ProtoBuf.loadProtoFile("tests/example1.proto", builder);

或者如果从原始字符串加载

ProtoBuf.loadProto(...protoString..., "example1.proto");

如果没有这个，构建器会说未定义，因为它没有任何东西可以用

构建它的定义

如何将protobuf base64字符串解码为js对象

How to decode protobuf base64 string to js object

javascript

protocol-buffers

protobuf.js