// Mybinary project main.go
package main
import (
"bytes"
"encoding/binary"
"log"
"reflect"
"strconv"
)
func main() {
/* 有符号数 */
num := int32(123456)
log.Println(reflect.TypeOf(num)) //显示类型
buf := bytes.NewBuffer([]byte{})
err := binary.Write(buf, binary.BigEndian, num) //大端
if err != nil {
log.Panicln(err.Error())
}
log.Println("num = ", num, "byte BigEndian =>", buf.Bytes())
buf.Reset()
err = binary.Write(buf, binary.LittleEndian, num) //小端
if err != nil {
log.Panicln(err.Error())
}
log.Println("num = ", num, "byte LittleEndian =>", buf.Bytes())
/* 通过 Put 方式实现 */
var num2 uint32 = 123456
buf2 := make([]byte, 4)
binary.BigEndian.PutUint32(buf2, num2) //大端
log.Println("num2 = ", num2, "byte BigEndian =>", buf2)
buf2 = nil
buf2 = make([]byte, 4)
binary.LittleEndian.PutUint32(buf2, num2) //小端
log.Println("num2 = ", num2, "byte LittleEndian =>", buf2)
num3 := 987654321
bsnum := []byte(strconv.Itoa(num3))
log.Println("num3 = ", num3, "bsnum = ", bsnum)
log.Println("string(bsnum[0]) = ", string(bsnum[0]))
}
输出:
C:/Go/bin/go.exe build -i [D:/golang/src/Mybinary]
成功: 进程退出代码 0.
D:/golang/src/Mybinary/Mybinary.exe [D:/golang/src/Mybinary]
2018/02/07 19:51:22 int32
2018/02/07 19:51:22 num = 123456 byte BigEndian => [0 1 226 64]
2018/02/07 19:51:22 num = 123456 byte LittleEndian => [64 226 1 0]
2018/02/07 19:51:22 num2 = 123456 byte BigEndian => [0 1 226 64]
2018/02/07 19:51:22 num2 = 123456 byte LittleEndian => [64 226 1 0]
2018/02/07 19:51:22 num3 = 987654321 bsnum = [57 56 55 54 53 52 51 50 49]
2018/02/07 19:51:22 string(bsnum[0]) = 9
成功: 进程退出代码 0.