go数据类型和[]byte相互转换
package main import ( "bytes" "encoding/binary" "fmt" ) func main() { var i1 int64 = 511 // [00000000 00000000 ... 00000001 11111111] = [0 0 0 0 0 0 1 255] s1 := make([]byte, 0) buf := bytes.NewBuffer(s1) // 数字转 []byte, 网络字节序为大端字节序 binary.Write(buf, binary.BigEndian, i1) fmt.Println(buf.Bytes()) // 数字转 []byte, 小端字节序 buf.Reset() binary.Write(buf, binary.LittleEndian, i1) fmt.Println(buf.Bytes()) // []byte 转 数字 s2 := []byte{6: 1, 7: 255} // [0 0 0 0 0 0 1 255] buf = bytes.NewBuffer(s2) var i2 int64 binary.Read(buf, binary.BigEndian, &i2) fmt.Println(i2) // 511 s3 := []byte{255, 1, 7:0} // [255 1 0 0 0 0 0 0] buf = bytes.NewBuffer(s3) var i3 int64 binary.Read(buf, binary.LittleEndian, &i3) fmt.Println(i3) // 511 }