Go语言 操作二进制文件

二进制文件的内容:

Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F
00000000 12 31 23 12 31 22 31 23 12 31 22 22 22 22 22 22 1# 1"1# 1""""""
00000010 22 22 22 12 23 12 23 00 00 00 00 00 00 00 00 00 """ # # 
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000080 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
00000090 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
000000A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
000000B0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
000000C0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
000000D0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 

package main
import (
	"bytes"
	"fmt"
	"io"
	"os"
)
func main() {
	file, err := os.OpenFile("test", os.O_RDONLY, os.ModePerm)
	if err != nil {
		defer file.Close()
		os.Exit(0)
	}
	file.Seek(8, 0)
	fmt.Println("Success Open File")
	var buffer bytes.Buffer
	io.CopyN(&buffer, file, 8)
	_bytes := buffer.Bytes()
	var magic []byte = []byte{0x12, 0x31, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22}
	for _, byte := range _bytes {
		fmt.Printf("%02X ", byte)
	}
	fmt.Println()
	if bytes.Compare(magic, _bytes) == 0 {
		fmt.Println("Equal")
	}
}

	Success Open File
	12 31 22 22 22 22 22 22 
	Equal

本文来自:CSDN博客

感谢作者:king1076

查看原文:Go语言 操作二进制文件

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