文件名，目录名或卷标签语法不正确-尝试在Go lang中读取文件时

Question

I want to read contents of text file.

When I am passing the file name as string like this:

stream, err = ioutil.ReadFile("sample.txt")

its working. Its even working if do in this way:

filename := "sample.txt"
stream, err = ioutil.ReadFile(filename)

But when I get the value of filename from string array, it fails to get the file and throw the error: The filename, directory name, or volume label syntax is incorrect

filename := lines[1] //where lines[] is an array of strings
stream, err = ioutil.ReadFile(filename)

Debug information

fmt.Printf("%q
", lines[1]) // output: mytext2.txt

Answer 1

The application should trim the from the end of the string using strings.TrimSuffix(filename, "") or strings.TrimSpace(filename).

If OP used strings.Split(s, " ", -1) to create lines, then the trailing can also be avoided by splitting on " " instead.