我已经对这个主题做了一些研究,并在
的帮助下找到了一些解决方案但是这些方法都不适用于我的类,因为我的类有一个数组。
以下是我正在使用的测试课程:
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
public class ByteArrayInClass
{
private byte _option;
private ushort _nElements;
private byte[] arrayElements;
public ByteArrayInClass(byte option, ushort nElements)
{
this._option = option;
this._nElements = nElements;
arrayElements = new byte[nElements];
for (int i = 0; i < arrayElements.Length; i++)
{
arrayElements[i] = (byte)i;
}
}
public static byte[] ObjectToBytes(byteArrayInClass value)
{
}
public static byteArrayInClass BytesToObject(byte[] bytes)
{
}
}
在我的主要:
testObject1 = new ByteArrayInClass(3, 10);
byte[] testBytes1 = ByteArrayInClass.ObjectToBytes(testObject1);
byte[] testBytes2 = { 3, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
ByteArrayInClass testObject2 = ByteArrayInClass.BytesToObjectbyte(testBytes2);
我开始认为我需要将类的成员逐个转换为字节,反之亦然,将字节转换为对象。有人能指出我正确的方向吗?
修改 我对自己要做的事情不太清楚。我正在开发一个与服务器通信的程序。它涉及接收数据和发送数据。数据以字节发送和接收,当我收到数据字节时,我需要构造一个包含接收字节的类,所以我理解发送给我的是什么。当我向服务器发送数据时,我首先构造一个具有适当值的类,然后将对象转换为字节,这样我就可以将数据发送到服务器。希望这可以解释我想要做的事情。
似乎没有一种简单的方法将类转换为字节,所以我自己将每个类成员转换为字节。以下是我提出的建议。如果这是完成任务的愚蠢方式,请随时告诉我。我想学习一种更聪明的方法。
public static int GetObjectSize(ByteArrayInClass value)
{
return Marshal.SizeOf(value.Option) + Marshal.SizeOf(value.ElementCount) + (value.ElementCount * 1);
}
public static byte[] ObjectToBytes(ByteArrayInClass value)
{
int copyIndex = 0;
byte[] resultBytes = new byte[GetObjectSize(value)];
resultBytes[copyIndex] = value.Option;
copyIndex += 1;
byte[] elementCountBytes = BitConverter.GetBytes(value.ElementCount);
elementCountBytes.CopyTo(resultBytes, copyIndex);
copyIndex += elementCountBytes.Length;
value.ElementArray.CopyTo(resultBytes, copyIndex);
return resultBytes;
}
public static ByteArrayInClass BytesTObject(byte[] bytes)
{
int convertIndex = 0;
byte option = bytes[convertIndex];
convertIndex += 1;
ushort elementCount = BitConverter.ToUInt16(bytes, convertIndex);
convertIndex += 2;
ByteArrayInClass resultObj = new ByteArrayInClass(option, elementCount);
byte[] elementArray = new byte[elementCount];
int j = 0;
for (int i = convertIndex; i < (convertIndex + elementCount); i++)
{
elementArray[j++] = bytes[i];
}
resultObj.ElementArray = elementArray;
return resultObj;
}
答案 0 :(得分:3)
好吧这也许是你在寻找
从您的评论和更新中收集的假设如下
注意:这里可能有很多方面可以改进,但这只是为了给你一些想法
如果您使用像webservices这样的内容,这整个答案都是空的,那么这实际上只是一种适用于套接字的序列化方法
概述
Package类有以下几种方法
所以给出以下
消息枚举
// Some predefined messages
public enum MessageType : byte
{
MyClass,
MyOtherClass,
Message3,
Message4,
}
您希望通过电汇发送的某些课程
// a serilaizable class
// Make this as you like
[Serializable]
public class MyClass
{
public byte[] SomeArbitaryBytes { get; set; }
public string SomeArbitaryString { get; set; }
public int SomeArbitaryInt { get; set; }
public double SomeArbitaryDouble { get; set; }
public MyClass()
{
SomeArbitaryString = "hello";
SomeArbitaryInt = 7;
SomeArbitaryDouble = 98.1;
SomeArbitaryBytes = new byte[10];
for (var i = 0; i < SomeArbitaryBytes.Length; i++)
{
SomeArbitaryBytes[i] = (byte)i;
}
}
}
套餐类
public static class Package
{
// Method for basic checksum
private static byte GetBasicChecksum(this byte[] data)
{
byte sum = 0;
unchecked // Let overflow occur without exceptions
{
foreach (byte b in data)
{
sum += b;
}
}
return sum;
}
// Serialize to bytes (BinaryFormatter)
public static byte[] SerializeToBytes<T>(this T source)
{
using (var stream = new MemoryStream())
{
var formatter = new BinaryFormatter();
formatter.Serialize(stream, source);
return stream.ToArray();
}
}
// Deerialize from bytes (BinaryFormatter)
public static T DeserializeFromBytes<T>(this byte[] source)
{
using (var stream = new MemoryStream(source))
{
var formatter = new BinaryFormatter();
stream.Seek(0, SeekOrigin.Begin);
return (T)formatter.Deserialize(stream);
}
}
// Check if we have enough data
// will throw if it detects a corruption (basic)
// return false if there isnt enough data to determine
// return true and length of the package if sucessfull
public static bool HasValidPackage(this Stream stream, out Int32 messageSize)
{
messageSize = -1;
if (stream.Length - stream.Position < sizeof(byte) * 2 + sizeof(Int32))
return false;
var stx = stream.ReadByte();
if (stx != 2)
throw new InvalidDataException("Invalid Package : STX Failed");
var packageLength = new byte[sizeof(Int32)];
stream.Read(packageLength, 0, sizeof(Int32));
messageSize = BitConverter.ToInt32(packageLength, 0) - sizeof(byte) * 3;
var checkSum = stream.ReadByte();
if (checkSum != packageLength.GetBasicChecksum())
throw new InvalidDataException("Invalid Package : CheckSum Failed");
return stream.Length >= messageSize;
}
// Pack the message
public static byte[] PackMessage<T>(this T source, MessageType messageType)
{
var buffer = source.SerializeToBytes();
var packageLength = BitConverter.GetBytes(buffer.Length + sizeof(byte) * 3);
using (var stream = new MemoryStream())
{
stream.WriteByte(2);
stream.Write(packageLength, 0, sizeof(Int32));
stream.WriteByte(packageLength.GetBasicChecksum());
stream.WriteByte((byte)messageType);
stream.Write(buffer, 0, buffer.Length);
stream.WriteByte(3);
return stream.ToArray();
}
}
// Unpack the message
public static MessageType UnPackMessage(this Stream stream, Int32 messageSize, out byte[] buffer)
{
var messageType = (MessageType)stream.ReadByte();
buffer = new byte[messageSize];
stream.Read(buffer, 0, buffer.Length);
var etx = stream.ReadByte();
if (etx != 3)
throw new InvalidDataException("Invalid Package : ETX Failed");
return messageType;
}
}
客户端代码
// create your class
var myClass = new MyClass();
// Create a package out of it
var bytes = myClass.PackMessage(MessageType.MyClass);
服务器端代码
// this is server side
using (var stream = new MemoryStream(bytes))
{
Int32 messageSize;
// if we have a valid package do stuff
// this loops until there isnt enough data for a package or empty
while (stream.HasValidPackage(out messageSize))
{
byte[] buffer;
switch (stream.UnPackMessage(messageSize, out buffer))
{
case MessageType.MyClass:
var myClassCopy = buffer.DeserializeFromBytes<MyClass>();
// do stuff with your class
break;
case MessageType.MyOtherClass:
break;
case MessageType.Message3:
break;
case MessageType.Message4:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
// do something with the remaining bytes here, if any, i.e partial package
}
答案 1 :(得分:1)
答案 2 :(得分:1)
很难判断序列化是最终结果,还是仅仅是尝试实现其他目标的方法。迈向其他目标。然而,字节数组序列化很好:
[Serializable]
public class ByteArrayClass
{
public byte[] FirstArray {get; set;}
public byte[] SecondArray {get; set;}
}
然后进行往返测试:
ByteArrayClass myFoo = new ByteArrayClass();
myFoo.FirstArray = new byte[] { 3, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
myFoo.SecondArray = new byte[] { 3, 11, 5, 1, 21, 23, 4, 5, 4, 7, 8, 9, 10 };
using (FileStream fs = new FileStream(@"C:\Temp\Arry.Bin",
FileMode.Create, FileAccess.Write))
{
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs, myFoo);
}
ByteArrayInClass newFoo;
using (FileStream fs = new FileStream(@"C:\Temp\Arry.Bin",
FileMode.Open, FileAccess.Read))
{
BinaryFormatter bf = new BinaryFormatter();
newFoo = (ByteArrayClass) bf.Deserialize(fs);
}
如果我没有添加ProtoBuf-Net是一个比BinaryFormatter更快,更好的序列化器,那将是我的疏忽。它也更适合数据传输 - 由一个程序集序列化的类可以被另一个程序集反序列化,并产生较小的输出。
答案 3 :(得分:1)
很难说出你真正想要实现的目标,但不好意思试一试
这是否符合您的预期目标?
public class ByteArrayInClass
{
public byte Option { get; set; }
public ushort Elements { get; set; }
public byte[] Bytes { get; set; }
public ByteArrayInClass(byte option, ushort nElements)
{
this.Option = option;
this.Elements = nElements;
this.Bytes = new byte[nElements];
for (var i = 0; i < nElements; i++)
{
this.Bytes[i] = (byte)i;
}
}
public ByteArrayInClass(byte[] array)
{
this.Elements = (ushort)array.Length;
this.Bytes = new byte[this.Elements];
array.CopyTo(this.Bytes, 0);
}
public static byte[] ObjectToBytes(ByteArrayInClass value)
{
var result = new byte[value.Elements];
value.Bytes.CopyTo(result, 0);
return result;
}
public static ByteArrayInClass BytesToObject(byte[] bytes)
{
return new ByteArrayInClass(bytes);
}
}