buffer

问题 So I am a developer for a project that uses a java agent to inject. It should be noted though that this error occurs after main is called. Everything is going fine for most users, but a few are having an issue where java.nio.IntBuffer isn't loading clear() (inherited from Buffer) Error: java.lang.NoSuchMethodError: java.nio.IntBuffer.clear()Ljava/nio/IntBuffer; Then the stacktrace, which simply gives the first time clear() is called in our code. What is the cause of this (besides the fact

问题 Using NodeJS v5.6 I created a file called read-stream.js : const fs = require('fs'), stream = fs.createReadStream(process.argv[2]); stream.on('data', function(chunk) { process.stdout.write(chunk); }); stream.on('error', function(err) { process.stderr.write("ERROR: " + err.message + "\n"); }); and a data file in plain text called target.txt : hello world this is the second line If I do node read-stream.js target.txt the contents of target.txt are printed normally on my console and all is well.

问题 I was using with ArrayPool in C#. I wanted to create my own pool with max no of arrays 5 and max size of array 1050000. I used this ArrayPool.Create() method. I am not able to understand one thing - i am trying to rent from the pool 10 times in the snippet below ,although i specified max arrays to be 5 , then why is it not showing any error. Also, i specified max length to be 1050000.Then how am i able to rent a 4200000 array without any error ? byte[] buffer; ArrayPool<byte> pool = ArrayPool

问题 I have created a buffer from a file which can be pdf, jpg or any other format. Now I want to detect if the buffer is of the pdf file or any other file. request({ url, encoding: null }, (err, resp, buffer) => { hashFromFilebuffer('sha256', buffer).then(function (result) { console.log(result) }).catch(function (error) { console.log(error) }); }); 回答1: Have a look at this: https://github.com/sindresorhus/file-type/ . If you want to know how it works, I think the code is at https://github.com

问题 I have created a buffer from a file which can be pdf, jpg or any other format. Now I want to detect if the buffer is of the pdf file or any other file. request({ url, encoding: null }, (err, resp, buffer) => { hashFromFilebuffer('sha256', buffer).then(function (result) { console.log(result) }).catch(function (error) { console.log(error) }); }); 回答1: Have a look at this: https://github.com/sindresorhus/file-type/ . If you want to know how it works, I think the code is at https://github.com

问题 So I am using html-pdf to convert my html and here is my code: var pdf = require('html-pdf') var html = 'somehtmlfile.html' pdf.create(html).toBuffer(function (err, buffer) { if (err) { console.log(err) } else { console.log(buffer) var pdfBuffer = new Buffer(buffer) res.setHeader('Content-disposition', 'inline; filename="test.pdf"'); res.setHeader('Content-type', 'application/pdf'); res.send(pdfBuffer) } } I am not getting any PDF file to be downloader nor any output of a pdf file in the

问题 So I am using html-pdf to convert my html and here is my code: var pdf = require('html-pdf') var html = 'somehtmlfile.html' pdf.create(html).toBuffer(function (err, buffer) { if (err) { console.log(err) } else { console.log(buffer) var pdfBuffer = new Buffer(buffer) res.setHeader('Content-disposition', 'inline; filename="test.pdf"'); res.setHeader('Content-type', 'application/pdf'); res.send(pdfBuffer) } } I am not getting any PDF file to be downloader nor any output of a pdf file in the

问题 tl;dr I am currently attempting to get a screenshot using webshot and upload to Google Drive without saving the file to the filesystem as an intermediate step in the process. Any code--regardless of the approach--that will allow me to do this is most welcome!! What I've tried I was able to get the system to run locally by saving the file from webshot and then uploading that file to Google Drive, but this is not possible on the server environment I use (Elastic Beanstalk), and I would like to

问题 tl;dr I am currently attempting to get a screenshot using webshot and upload to Google Drive without saving the file to the filesystem as an intermediate step in the process. Any code--regardless of the approach--that will allow me to do this is most welcome!! What I've tried I was able to get the system to run locally by saving the file from webshot and then uploading that file to Google Drive, but this is not possible on the server environment I use (Elastic Beanstalk), and I would like to

问题 I am trying to figure out a nice solution to reading serial data, and what to do when a read() is done but it contains an incomplete message. The expected messages between devices have a defined start and end byte so its easy to see when a message starts and ends. I can open a serial port fine and read from the serial port. But I am encountering the computer is reading faster than data coming through and I get an incomplete message. For this example, lets say the message expected is 0x10 0xFF