Golang Scan 不扫描下一行

Question

此扫描仪将扫描下一行。当你看到结果时，我会更详细地解释它...

package main

import (
    "fmt"
    "io/ioutil"
    "os"
    "strings"
)

func main() {
    var inputFileName string
    var write string

    fmt.Scanln(&inputFileName)

    //func Join(a []string, sep string) string
    s := []string{inputFileName, ".txt"}
    inputFileName = strings.Join(s, "")

    creator, err := os.Create(inputFileName)
    check(err)

    /*
     *Writing
     */

    fmt.Printf("The file name with %s what do you want to write?", inputFileName)
    fmt.Scanln(&write)
    if len(write) <= 0 {
        panic("Cant be empty")
    }

    byteStringWrite := []byte(write)
    //func (f *File) Write(b []byte) (n int, err error)
    fmt.Println("BYTE : ", byteStringWrite)
    fmt.Println("NONBYTE : ", write)
    _, errWriter := creator.Write(byteStringWrite)
    check(errWriter)

    /**
     *Reading File
     */

    read, errRead := ioutil.ReadFile(inputFileName)
    check(errRead)
    readString := string(read)
    fmt.Println("*******************FILE*********************")
    fmt.Println(readString)
}

func check(e error) {
    if e != nil {
        panic(e)
    }
}

结果：

Sample.txt //My User Input
The file name with Sample.txt what do you want to write?Hello World
BYTE :  [72 101 108 108 111]
NONBYTE :  Hello
*******************FILE*********************
Hello

所以在这里你可以看到它正在寻找 space。意思是 space 之后它会自动退出。有人可以帮我解决这个问题吗？谢谢。

编辑

使用bufio.ReadString()；

package main

import (
    "fmt"
    "io/ioutil"
    "os"
    "strings"
    "bufio"
)

func main() {
    var inputFileName string
    var write string

    bio := bufio.NewReader(os.Stdin)
    inputFileName, err := bio.ReadString('\n')
    fmt.Println(inputFileName)

    //func Join(a []string, sep string) string
    s := []string{inputFileName, ".txt"}
    inputFileName = strings.Join(s, "")

    creator, err := os.Create(inputFileName)
    check(err)

    /*
     *Writing
     */

    fmt.Printf("The file name with %s what do you want to write?", inputFileName)
    fmt.Scanln(&write)
    if len(write) <= 0 {
        panic("Cant be empty")
    }

    byteStringWrite := []byte(write)
    //func (f *File) Write(b []byte) (n int, err error)
    fmt.Println("BYTE : ", byteStringWrite)
    fmt.Println("NONBYTE : ", write)
    _, errWriter := creator.Write(byteStringWrite)
    check(errWriter)

    /**
     *Reading File
     */

    read, errRead := ioutil.ReadFile(inputFileName)
    check(errRead)
    readString := string(read)
    fmt.Println("*******************FILE*********************")
    fmt.Println(readString)
}

func check(e error) {
    if e != nil {
        panic(e)
    }
}

结果：

amanuel2:~/workspace/pkg_os/07_Practice $ go run main.go 
Sample
The file name with Sample
.txt what do you want to write?Something Else
BYTE :  [83 111 109 101 116 104 105 110 103]
NONBYTE :  Something
*******************FILE*********************
Something

给了我正确的.txt ..但是和上面一样的问题，它确实需要 spaces

Answer 1

这正是 fmt.Scanln 应该做的：

Scan scans text read from standard input, storing successive space-separated values into successive arguments. Newlines count as space. It returns the number of items successfully scanned. If that is less than the number of arguments, err will report why.

如果您想阅读一行文本，请使用 bufio.Reader:

bio := bufio.NewReader(os.Stdin)

// in case you want a string which doesn't contain the newline
line, hasMoreInLine, err := bio.ReadLine()
s := string(line)    
fmt.Println(s)

// in case you need a string which contains the newline
s, err := bio.ReadString('\n')
fmt.Println(s)

Golang Scan 不扫描下一行

Go Lang Scan doesent scan for next line

scanning

go

编辑