go文件操作【常规文件】

1.创建文件

    filePath:="./show.txt"
    _,err:=os.Create(filePath)
    if err!= nil {
        fmt.Println("create file is error")
    }
    _,err:=os.OpenFile(filePath,os.O_APPEND|os.O_CREATE,0666)
    if err != nil {
        fmt.Println("create file is error")
    }

2.写文件

//第一种办法
    filePath:="./show.txt"
    file,err:=os.Create(filePath)
    if err != nil{
        fmt.Println("create file is error")
    }
    content:=[]byte("this is file content")
    n,err:=file.Write(content)
    if err != nil {
        fmt.Printf("write file is error")
    }
    fmt.Print(n)
    defer  file.Close()
    //第二种办法
    filePath:="./show.txt"
    file,err:=os.OpenFile(filePath,os.O_CREATE|os.O_APPEND,0666)
    if(err != nil ){
        fmt.Println("create file is error")
    }
    content:="this is file test content"
    newWriter:=bufio.NewWriter(file)
    newWriter.WriteString(content)
    newWriter.Flush()
    defer  file.Close()
    //第三种办法
    filePath:="info.txt"
    content:=[]byte("this is infio")
    err:=ioutil.WriteFile(filePath,content,0666)
    if err != nil {
        fmt.Println(err)
    }