Question

我正在尝试将图像发送到nodejs中的电报机器人。我根据需要创建了图像，但是当我发送图像时，电报会返回错误：

Unhandled rejection Error: ETELEGRAM: 400 Bad Request: IMAGE_PROCESS_FAILED
    at BaseError (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\node-telegram-bot-api\src\errors.js:10:5)
    at TelegramError (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\node-telegram-bot-api\src\errors.js:62:5)
    at request.then.err (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\node-telegram-bot-api\src\telegram.js:280:15)
    at tryCatcher (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\util.js:16:23)
    at Promise._settlePromiseFromHandler (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\promise.js:547:31)
    at Promise._settlePromise (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\promise.js:604:18)
    at Promise._settlePromise0 (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\promise.js:649:10)
    at Promise._settlePromises (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\promise.js:729:18)
    at _drainQueueStep (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\async.js:93:12)
    at _drainQueue (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\async.js:86:9)
    at Async._drainQueues (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\async.js:102:5)
    at Immediate.Async.drainQueues (C:\Users\bakaydin\OneDrive - Amadeus Workplace\Project\Workspace\Other\NodeJs\node_modules\bluebird\js\release\async.js:15:14)
    at runCallback (timers.js:672:20)
    at tryOnImmediate (timers.js:645:5)
    at processImmediate [as _immediateCallback] (timers.js:617:5)

代码：

bot.onText(/\/items/, (msg, match) => {
    const chatId = msg.chat.id;

    var qr_svg = qr.image('I love QR!', { type: 'png' });
    qr_svg.pipe(require('fs').createWriteStream('i_love_qr.png'));

    fs.readFile('i_love_qr.png', function (err, data) {
        if (err) throw err; // Fail if the file can't be read.
        console.log(data)
        bot.sendPhoto(chatId, data)
    });

    bot.sendMessage(chatId, 'test')
});

预先感谢

Answer 1

qr_svg.pipe(require('fs').createWriteStream('i_love_qr.png'))是async操作。因此，即使在上一行之前，也可能会执行下一行，因此不会将数据写入文件。因此，当发送损坏的数据或没有数据时，您可能会收到错误的请求错误。因此，您的代码应如下所示：

 bot.onText(/\/items/, (msg, match) => {
    const chatId = msg.chat.id;

    var qr_svg = qr.image('I love QR!', { type: 'png' });
    var writeStream = fs.createWriteStream('i_love_qr.png')
    qr_svg.pipe(writeStream);
    writeStream.on('finish', () => {
    fs.readFile('i_love_qr.png', function (err, data) {
        if (err) throw err; // Fail if the file can't be read.
        console.log(data)
        bot.sendPhoto(chatId, data)
    });

    bot.sendMessage(chatId, 'test')

   })  
});

使用NodeJs发送图像到电报机器人

1 个答案: