golang实现整型和字节数组之间的转换操作_Golang_

 //isSymbol表示有无符号 func BytesToInt(b []byte, isSymbol bool) (int, error){ if isSymbol { return bytesToIntS(b) } return bytesToIntU(b) } //字节数(大端)组转成int(无符号的) func bytesToIntU(b []byte) (int, error) { if len(b) == 3 { b = append([]byte{0},b...) } bytesBuffer := bytes.NewBuffer(b) switch len(b) { case 1: var tmp uint8 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err case 2: var tmp uint16 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err case 4: var tmp uint32 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err default: return 0,fmt.Errorf("%s", "BytesToInt bytes lenth is invaild!") } } //字节数(大端)组转成int(有符号) func bytesToIntS(b []byte) (int, error) { if len(b) == 3 { b = append([]byte{0},b...) } bytesBuffer := bytes.NewBuffer(b) switch len(b) { case 1: var tmp int8 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err case 2: var tmp int16 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err case 4: var tmp int32 err := binary.Read(bytesBuffer, binary.BigEndian, &tmp) return int(tmp), err default: return 0,fmt.Errorf("%s", "BytesToInt bytes lenth is invaild!") } } //整形转换成字节 func IntToBytes(n int,b byte) ([]byte,error) { switch b { case 1: tmp := int8(n) bytesBuffer := bytes.NewBuffer([]byte{}) binary.Write(bytesBuffer, binary.BigEndian, &tmp) return bytesBuffer.Bytes(),nil case 2: tmp := int16(n) bytesBuffer := bytes.NewBuffer([]byte{}) binary.Write(bytesBuffer, binary.BigEndian, &tmp) return bytesBuffer.Bytes(),nil case 3,4: tmp := int32(n) bytesBuffer := bytes.NewBuffer([]byte{}) binary.Write(bytesBuffer, binary.BigEndian, &tmp) return bytesBuffer.Bytes(),nil } return nil,fmt.Errorf("IntToBytes b param is invaild") } 

 func IntToBytes(n int)[]byte{ data:=int64(n)//数据类型转换 bytebuffer:=bytes.NewBuffer([]byte{})//字节集合 binary.Write(bytebuffer,binary.BigEndian,data)//按照二进制写入字节 return bytebuffer.Bytes()//返回字节结合 }

 func BytesToInt(bs []byte)int{ bytebuffer:=bytes.NewBuffer(bs) //根据二进制写入二进制结合 var data int64 binary.Read(bytebuffer,binary.BigEndian,&data) //解码 return int(data) }