如何在客户端解码websocket数据？

Question

我花了很多时间尝试从服务器解码缓冲区，但我还没能弄清楚它的位置。

我尝试删除 JSON.parse() 但仍然出现错误。

这是从后端发送的数据，我将一个普通对象转换为缓冲区并将其字符串化：

 wss.clients.forEach((client) => {
      if (client.userID === contactID) {
        console.log(client.userID);
        client.send(Buffer.from(JSON.stringify(messageObj)));
      }
    });

在前端我有一个侦听器：

 ws.socket.addEventListener("message", async (message) => {
          const blobToText = await new Response(JSON.parse(message.data)).text();
          alert(blobToText);
          console.log(blobToText)
        });

这是我收到的错误：

[Unhandled promise rejection: SyntaxError: JSON Parse error: Unexpected identifier "object"]
at components/Home/Home.js:38:12 in ws.socket.addEventListener$argument_1

当我从后端删除缓冲区时（仅使用 stringify） ，我在客户端得到这个：

{"fields":{"consumerTag":"amq.ctag-LijiOI-nknkknjknj","deliveryTag":16,"redelivered":false,"exchange":"","routingKey":"messages"},"properties":{"headers":{}},"content":{"type":"Buffer","data":[123,34,114,101,97,100,34,58,102,97,108,115,101,44,34,116,105,109,101,83,101,110,116,34,58,49,54,52,54,48,55,52,50,54,52,55,54,53,44,34,109,101,115,115,97,103,101,34,58,34,102,101,114,102,101,114,102,34,44,34,117,115,101,114,73,68,34,58,52,55,44,34,99,111,110,116,97,99,116,73,68,34,58,52,55,125]}}

我现在解析时得到这个；如何将其转换为实际的消息对象？：

[
  101,  44,  34, 116, 105, 109, 101,  83, 101, 110, 116,  34,
   58,  49,  54,  52,  54,  48,  55,  54,  56,  50,  48,  52,
   58,  34, 101, 101, 102, 101, 119, 102,  34,  44,  34, 117,
  115, 101, 114,  73,  68,  34,  58,  52,  55,  44,  34,  99,
]

Answer 1

只需摆脱缓冲区即可。

    client.send(JSON.stringify(messageObj));

而不是

    client.send(Buffer.from(JSON.stringify(messageObj)));