The file “xxx” couldn’t be opened because there is no such file [duplicate]

问题

This question already has answers here:

UIImage(contentsOfFile:) returning nil despite file existing in caches directory [duplicate] (1 answer)

NSFileManager.defaultManager().fileExistsAtPath returns false instead of true (2 answers)

Closed 3 years ago.

I would like to open a .txt file and save the content as a String. I tried this:

let path = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0].appendingPathComponent("xxx.txt")
var contentString = try String(contentsOfFile: path.absoluteString)
print(path)

The print result:

file:///Users/Username/Documents/xxx.txt

But I get the error:

The file “xxx.txt” couldn’t be opened because there is no such file

The file is 100% available

Notice: I working with swift 4 for macOS

回答1:

Your path variable is an URL, and path.absoluteString returns a string representation of the URL (in your case the string "file:///Users/Username/Documents/xxx.txt"), not the underlying file path "/Users/Username/Documents/xxx.txt".

Using path.path is a possible solution:

let path = ... // some URL
let contentString = try String(contentsOfFile: path.path)

but the better method is to avoid the conversion and use the URL-based methods:

let path = ... // some URL
let contentString = try String(contentsOf: path)

回答2:

thx, I solved my problem. I have to use .path instead of .absoluteString:

var contentString = try String(contentsOfFile: path.path)

来源：https://stackoverflow.com/questions/46316256/the-file-xxx-couldn-t-be-opened-because-there-is-no-such-file