要逐行读取文件，请使用bufio 包 Scanner 。将文本文件命名为sample.txt，文件内容如下：
GO Language is a statically compiled programming language, It is an open-source language. It was designed at Google by Rob Pike, Ken Thompson, and Robert Grieserner. It is also known as Golang. Go language is a general-purpose programming language mainly meant for building large scale complex software.
package main
import (
"bufio"
"fmt"
"log"
"os"
)
func main() {
// os.Open() opens specific file in
// read-only mode and this return
// a pointer of type os.
file, err := os.Open("sample.txt")
if err != nil {
log.Fatalf("failed to open")
}
// The bufio.NewScanner() function is called in which the
// object os.File passed as its parameter and this returns a
// object bufio.Scanner which is further used on the
// bufio.Scanner.Split() method.
scanner := bufio.NewScanner(file)
// The bufio.ScanLines is used as an
// input to the method bufio.Scanner.Split()
// and then the scanning forwards to each
// new line using the bufio.Scanner.Scan()
// method.
scanner.Split(bufio.ScanLines)
var text []string
for scanner.Scan() {
text = append(text, scanner.Text())
}
// The method os.File.Close() is called
// on the os.File object to close the file
file.Close()
// and then a loop iterates through
// and prints each of the slice values.
for _, each_ln := range text {
fmt.Println(each_ln)
}
}
输出：
