未捕获的错误：ENOENT，没有这样的文件或目录

Question

const csv = require('csv-parser') var fs = require('browserify-fs'); const net1 = []; const net2 = []; let mood = 'Comedy'; let type = 'Movie'; let rating = 'PG-13'; let list = []; fs.createReadStream(__dirname +'netflix_titles.csv').pipe(csv({})).on('data', (data) => net1.push(data)).on('end', () => { for (let i = 0; i < net1.length; i++) { if (net1[i]['type'] === type) { if (net1[i]['rating'] === rating) { list.push(net1[i]['title']) } } } }); fs.createReadStream(__dirname + 'netflix_list.csv').pipe(csv({})).on('data', (data) => net2.push(data)).on('end', () => { for (let i = 0; i < net2.length; i++) { if (list.includes(net2[i]['title']) && net2[i]['genres'].includes(mood)) { console.log(net2[i]['title']) } } });

With this code, I keep getting the ENOENT error for 'netflix_titles.csv' and 'netflix_list.csv' even though they are in the root directory. I also bundled this script into a bundle.js with browserify. Both the bundle.js and this script.js are in the root directory.

Answer 1

The error code ENOENT (which means Error: No ENTry/ENTity ) means that the requested file is not available. In this case, this means that either the file located on __dirname + 'netflix_titles.csv' or the __dirname + 'netflix_list.csv' cannot be found.

That said, the __dirname variable in Node.js outputs the absolute path where the script is located. However, the value of that variable is guaranteed not to include a trailing slash ( / ).

So assume that you're running this script from C:\Users\Administrator\Projects\nodejs-example\ , and the __dirname for that is C:\\Users\\Administrator\\Projects\\nodejs-example . Combining that with __dirname + 'netflix_titles.csv' , the result will be C:\\Users\\Administrator\\Projects\\nodejs-examplenetflix_titles.csv and NOT C:\\Users\\Administrator\\Projects\\nodejs-example\\netflix_titles.csv .

So to solve this problem, add a leading slash ( / ) so it will become __dirname + '/netflix_titles.csv' and __dirname + '/netflix_list.csv' , respectively. Windows will tolerate which slash you'll be using (either / , or \\ (escaped \ character)), but using the forward slash / is more recommended so your program can be run on non-Windows devices, too.