Golang文件读写

创建文件

通过os包的Create、NewFile方法创建

func Create(name string)(file *File,err Error)

func NewFile(fd uintprt,name string)*File

打开文件

func Open(name string)(file *File,err Error)

func OpenFile(name string,flag int,perm uint32)(file *File,err Error)

写文件

func (file *File) Write(b []byte)(n int,err Error)

func (file *File)WriteAt(b []byte,off int64)(n int,err Error)

func (file *File)WriteString(s string)(ret int,err Error)

读文件

func (file *File) Read(b []byte)(n int,err Error)

func (file *File)ReadAt(b []byte,off int64)(n int,err Error)

f,err := os.Create(path)

defer f.Close()

var buf string

buf = fmt.Sprintf("你好")

n,err := f.WriteString(buf)

f,err := os.Create(path)

defer f.Close()

buf := make([] byte,1024*2)

n,err := f.Read(buf)

var s string

s = string(buf[:n])

bufio 按给定规则读取文件

r := bufio.NewReader(f)

buf,err := r.ReadBytes('\n')