golang的文件操作

package   main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {

	file,err :=os.OpenFile("D:/Kugou/nihao.txt",os.O_RDWR |os.O_APPEND | os.O_CREATE,0777)
    if err != nil {
    	fmt.Println("打开失败了",err)
		return
	}
	defer file.Close()
    write := bufio.NewWriter(file)
	for i :=0 ;i <5 ; i++ {
		write.WriteString("你好 golang \n")
	}
  write.Flush()
}

os.OpenFile，OS包的方法打开文件，将程序的内容写入到缓存中，传给变量，来展示

 

package  main

import (
	"fmt"
	"io/ioutil"
)

func main() {

	file1Path :="D:/Kugou/nihao.txt"
	file2Path := "D:/Kugou/test.txt"
  content,err :=	ioutil.ReadFile(file1Path)
	if err != nil {
		fmt.Println("有问题")
		return
  }

  err = ioutil.WriteFile(file2Path,content,0777)
	if err != nil {
		fmt.Println("写失败了")
	}





}

ioutil.ReadFile 读取文件，写入到变量，传入到路径下