python float数组base64编码

python代码

buf = struct.pack('>%sf' % len(floatlist), *floatlist)
b = base64.b64encode(buf)
s = str(b, encoding = "utf-8")

与下面的java代码等价

public static String encodeData(float[] data){
    ByteBuffer byteBuffer = ByteBuffer.allocate(data.length * 4);
    for (float f : data) {
        byteBuffer.putFloat(f);
    }
    byte[] dst = byteBuffer.array();
    return new sun.misc.BASE64Encoder().encode(dst);
}

• >是为了调节大小端，使其和java一致
• b是byte型，需要转成str型