Golang操作文件 - 读写文件

以下示例使用io/ioutil,bufio,os等包操作读写文件

package main

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

func errCheck(err error) {
    if err != nil {
        panic(err)
    }
}

func readFile(name string) {
    data, err := ioutil.ReadFile(name)
    errCheck(err)
    fmt.Println("data: ", string(data))
}

func main() {
    path := "test.txt"
    content := "hello"

    newFile, err := os.Create(path)
    errCheck(err)

    bufferWriter := bufio.NewWriter(newFile)

    for _, v := range content {
        n, err := bufferWriter.WriteString(string(v))
        errCheck(err)
        fmt.Println("n is : ", n)
    }

    readFile(path) // empty

    bufferWriter.Flush()

    readFile(path)
}