嗯，你是对的，我没仔细看。
那就换成 write 吧！

$ go doc encoding/binary.Write
package binary // import "encoding/binary"

func Write(w io.Writer, order ByteOrder, data interface{}) error
    Write writes the binary representation of data into w. Data must be a
    fixed-size value or a slice of fixed-size values, or a pointer to such data.
    Boolean values encode as one byte: 1 for true, and 0 for false. Bytes
    written to w are encoded using the specified byte order and read from
    successive fields of the data. When writing structs, zero values are written
    for fields with blank (_) field names.

别忘了明确字节序：

$ go doc encoding/binary.BigEndian
package binary // import "encoding/binary"

var BigEndian bigEndian
    BigEndian is the big-endian implementation of ByteOrder.

$ go doc encoding/binary.LittleEndian
package binary // import "encoding/binary"

var LittleEndian littleEndian
    LittleEndian is the little-endian implementation of ByteOrder.

网络字节序是 BigEndian，条件允许的话，一般建议用这个。

【 在 adu (阿杜) 的大作中提到: 】
: 我感觉楼主是要用go，收json，然后转成私有udp发出去。
: 发自「今日水木 on 鸿蒙」
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