Question

Idk为什么但我不断收到此错误... 我正在关闭连接，receiverlink和会话，但消息仍被锁定。有办法解决吗？

这是我的index.js：

const express = require ("express");
const publisher  = require ("./publisher");
const subscriber = require ("./subscriber");
const app = express();
const bodyParser = require("body-parser");
app.use(bodyParser.json ({ limit : '50mb'}));
app.use(bodyParser.urlencoded({ limit : '50mb', extended: true}))

app.post(
    "/", publisher 
)

app.get(
    "/", subscriber
)

app.listen(8080);

这是我的Publisher.js：

 var sender = connection.open_sender(topic);

    console.log(req.body);

    sender.on('sendable', function(context) {
        for (var i = 0; i < req.body.length; i++) {
            var m = req.body[i];
            console.log('sent ' + m);
            sender.send({body:m});
        }
        connection.close();

    });

    res.send("batata");
    }

这是我的Subscriber.js：

module.exports = function (req, res) {

    var client = 'my-client';
    var subscription = 'my-subscription';
    var topic = 'topic://PRICE.STOCK.NYSE.RHT';
    var host = 'localhost';
    var port = 5672

var connection = require('rhea').connect({ port:port, host:host, container_id:client });
connection.on('message', function (context) {

    if (context.message.body === 'detach') {
        context.receiver.detach();
        context.connection.close();
    } else if (context.message.body === 'close') {

        context.receiver.close();
        context.connection.close();
    } else {
        res.send(context.message.body);
        context.receiver.close();
        context.connection.close();
    }
});
connection.open_receiver({name:subscription, source:{address:topic, durable:2, expiry_policy:'never'}});
}

马上，我执行以下步骤： -使用./artemis run将服务器启动到我的代理目录中

在VSCode上，进入以下文件目录：node index.js
我通过邮递员发送带有以下正文的POST请求：

[“ batata”，“ bla”，“ oi”]
最后，我发送一个GET请求

这是网址：http://localhost:8080

然后，我的VsCode输出显示以下内容：

[ 'batata', 'bla', 'oi' ]
sent batata
sent bla
sent oi
events.js:187
      throw er; // Unhandled 'error' event
      ^

Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
    at ServerResponse.setHeader (_http_outgoing.js:485:11)
    at ServerResponse.header (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/node_modules/express/lib/response.js:771:10)
    at ServerResponse.send (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/node_modules/express/lib/response.js:170:12)
    at Connection.<anonymous> (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/examples/durable_subscription/subscriber.js:50:13)
    at Connection.emit (events.js:210:5)
    at Connection.dispatch (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/connection.js:242:37)
    at Session.dispatch (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/session.js:452:41)
    at Receiver.link.dispatch (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/link.js:62:38)
    at Incoming.on_transfer (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/session.js:361:22)
    at Session.on_transfer (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/session.js:749:19)
Emitted 'error' event on Container instance at:
    at Container.dispatch (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/container.js:41:33)
    at Connection.dispatch (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/connection.js:245:40)
    at Connection.input (/home/amq-broker/amq-javascript-2.5.0/node_modules/rhea/lib/connection.js:520:18)
    at Socket.emit (events.js:210:5)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:182:23) {
  code: 'ERR_HTTP_HEADERS_SENT'
}

发出POST请求后：“将标头发送到客户端后无法设置标头”

0 个答案: