这仅是一个辅助方法帮助类，可以协助小伙伴写二进制序列化的效率，代码也还看的过去
在开始之前，我需要说明的是，如果不是必要，不要使用二进制序列化。因为很难做到版本兼容，如果写错了也不知道是哪里写错了，调试难度很大。但是对于性能的提升，其实也不大
/// <summary>
/// 二进制序列化
/// </summary>
interface IBinarySerializable
{
void Serialize(BinaryWriter binaryWriter);
void Deserialize(BinaryReader binaryReader);
}这个接口用于给对象继承，如果对象继承了，那么就方便进行序列化
这是一些辅助方法
没有用到反射，需要自己手动写转换代码。注意顺序
static class BinarySerialize
{
/// <summary>
/// 写入 uin32 列表
/// </summary>
/// <param name="binaryWriter"></param>
/// <param name="list"></param>
public static void WriteUint32List(this BinaryWriter binaryWriter, List<uint> list)
{
// 格式先写入列表长度，然后依次写入内容
binaryWriter.Write(list.Count);
foreach (var n in list)
{
binaryWriter.Write(n);
}
}
/// <summary>
/// 读取 uint32 列表
/// </summary>
/// <param name="binaryReader"></param>
/// <returns></returns>
public static List<uint> ReadUint32List(this BinaryReader binaryReader)
{
// 读取长度
var count = binaryReader.ReadInt32();
List<uint> list = new List<uint>(count);
for (int i = 0; i < count; i++)
{
list.Add(binaryReader.ReadUInt32());
}
return list;
}
/// <summary>
/// 写入字符串列表
/// </summary>
/// <param name="binaryWriter"></param>
/// <param name="stringList"></param>
public static void WriteStringList(this BinaryWriter binaryWriter, List<string> stringList)
{
// 格式先写入列表长度，然后依次写入字符串
binaryWriter.Write(stringList.Count);
foreach (var str in stringList)
{
binaryWriter.Write(str);
}
}
/// <summary>
/// 写入可序列化类的列表
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="binaryWriter"></param>
/// <param name="list"></param>
public static void WriteList<T>(this BinaryWriter binaryWriter, List<T> list) where T : IBinarySerializable
{
// 先写入长度
binaryWriter.Write(list.Count);
foreach (var binarySerializable in list)
{
binarySerializable.Serialize(binaryWriter);
}
}
/// <summary>
/// 读取可序列化类的列表
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="binaryReader"></param>
/// <returns></returns>
public static List<T> ReadList<T>(this BinaryReader binaryReader) where T : IBinarySerializable, new()
{
// 读取长度
var count = binaryReader.ReadInt32();
List<T> list = new List<T>(count);
for (int i = 0; i < count; i++)
{
T t = new T();
t.Deserialize(binaryReader);
list.Add(t);
}
return list;
}
/// <summary>
/// 读取字符串列表
/// </summary>
/// <param name="binaryReader"></param>
/// <returns></returns>
public static List<string> ReadStringList(this BinaryReader binaryReader)
{
// 先读取列表长度，然后依次读取字符串
var count = binaryReader.ReadInt32();
List<string> stringList = new List<string>(count);
for (int i = 0; i < count; i++)
{
var str = binaryReader.ReadString();
stringList.Add(str);
}
return stringList;
}
/// <summary>
/// 写入头信息，默认是需要固定长度的
/// </summary>
/// <param name="binaryWriter"></param>
/// <param name="head"></param>
/// <param name="headLength"></param>
public static void WriteHead(this BinaryWriter binaryWriter, string head, int headLength)
{
var headByte = StringToByteList(head);
binaryWriter.WriteByteList(headByte, headLength);
}
/// <summary>
/// 将字符串转换为 byte 其中字符串添加长度前缀
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static byte[] StringToByteList(string str)
{
var strByteList = Utf8.GetBytes(str);
ushort byteLength = (ushort)strByteList.Length;
var newLength = sizeof(ushort) + strByteList.Length;
var byteList = new byte[newLength];
var binaryWriter = new BinaryWriter(new MemoryStream(byteList));
binaryWriter.Write(byteLength);
binaryWriter.Write(strByteList);
return byteList;
}
/// <summary>
/// 写入二进制写入固定长度
/// </summary>
/// <param name="binaryWriter"></param>
/// <param name="source"></param>
/// <param name="byteCount"></param>
public static void WriteByteList(this BinaryWriter binaryWriter, byte[] source, int byteCount)
{
var byteList = new byte[byteCount];
Array.Copy(source, 0, byteList, 0, Math.Min(source.Length, byteCount));
binaryWriter.Write(byteList, 0, byteCount);
}
private static Encoding Utf8 => Encoding.UTF8;
/// <summary>
/// 读取固定长度的头
/// </summary>
/// <param name="binaryReader"></param>
/// <param name="headLength"></param>
/// <returns></returns>
public static string ReadHead(this BinaryReader binaryReader, int headLength)
{
var strByteLength = (ushort)binaryReader.ReadInt16();
var strByteList = binaryReader.ReadBytes(strByteLength);
var head = Utf8.GetString(strByteList);
var readLength = headLength - sizeof(ushort) - strByteLength;
binaryReader.ReadBytes(readLength);
return head;
}
}这里的读写 Head 也许小伙伴的业务是用不到的，我用这个方法主要是写入版本号
这是单元测试的代码，只是测试主要使用方法，边界没有测试
[TestClass]
public class BinarySerializeTests
{
private class FakeBinarySerialize : IBinarySerializable, IEquatable<FakeBinarySerialize>
{
/// <inheritdoc />
public void Serialize(BinaryWriter binaryWriter)
{
binaryWriter.Write(F1);
binaryWriter.Write(F2);
}
/// <inheritdoc />
public void Deserialize(BinaryReader binaryReader)
{
F1 = binaryReader.ReadString();
F2 = binaryReader.ReadInt32();
}
public string F1 { set; get; }
public int F2 { set; get; }
/// <inheritdoc />
public bool Equals(FakeBinarySerialize other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return F1 == other.F1 && F2 == other.F2;
}
/// <inheritdoc />
public override bool Equals(object obj)
{
if (ReferenceEquals(null, obj)) return false;
if (ReferenceEquals(this, obj)) return true;
if (obj.GetType() != this.GetType()) return false;
return Equals((FakeBinarySerialize)obj);
}
/// <inheritdoc />
public override int GetHashCode()
{
unchecked
{
return ((F1 != null ? F1.GetHashCode() : 0) * 397) ^ F2;
}
}
}
[ContractTestCase]
public void WriteUint32List()
{
"写入uint列表，可以读取列表内容".Test(() =>
{
// Arrange
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
var fakeBinarySerializeList = new List<uint>();
for (int i = 0; i < 100; i++)
{
fakeBinarySerializeList.Add((uint)i);
}
// Action
binaryWriter.WriteUint32List(fakeBinarySerializeList);
// Assert
memoryStream.Seek(0, SeekOrigin.Begin);
var binaryReader = new BinaryReader(memoryStream);
var readList = binaryReader.ReadUint32List();
Equal(fakeBinarySerializeList, readList);
});
}
[ContractTestCase]
public void WriteList()
{
"写入列表内容，可以读取列表".Test(() =>
{
// Arrange
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
var fakeBinarySerializeList = new List<FakeBinarySerialize>();
for (int i = 0; i < 100; i++)
{
fakeBinarySerializeList.Add(new FakeBinarySerialize()
{
F1 = i.ToString(),
F2 = i,
});
}
// Action
binaryWriter.WriteList(fakeBinarySerializeList);
// Assert
memoryStream.Seek(0, SeekOrigin.Begin);
var binaryReader = new BinaryReader(memoryStream);
var readList = binaryReader.ReadList<FakeBinarySerialize>();
Equal(fakeBinarySerializeList, readList);
});
}
private void Equal<T>(List<T> a, List<T> b)
{
Assert.AreEqual(a.Count, b.Count);
for (int i = 0; i < a.Count; i++)
{
Assert.AreEqual(a[i], b[i]);
}
}
[ContractTestCase]
public void WriteStringList()
{
"写入空字符串列表，可以读取空的列表".Test(() =>
{
// Arrange
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
var head = "Font Data 1.0.0";
var length = 20;
var test = (byte)0xF1;
var stringList = new List<string>();
// Action
binaryWriter.WriteHead(head, length);
binaryWriter.Write(test);
binaryWriter.WriteStringList(stringList);
// Assert
memoryStream.Seek(0, SeekOrigin.Begin);
var binaryReader = new BinaryReader(memoryStream);
var str = binaryReader.ReadHead(length);
var b = binaryReader.ReadByte();
var readList = binaryReader.ReadStringList();
Assert.AreEqual(0, readList.Count);
});
"写入字符串列表，可以读取写入的值".Test(() =>
{
// Arrange
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
var head = "Font Data 1.0.0";
var length = 20;
var test = (byte)0xF1;
var stringList = new List<string>()
{
"lindexi","doubi"
};
// Action
binaryWriter.WriteHead(head, length);
binaryWriter.Write(test);
binaryWriter.WriteStringList(stringList);
// Assert
memoryStream.Seek(0, SeekOrigin.Begin);
var binaryReader = new BinaryReader(memoryStream);
var str = binaryReader.ReadHead(length);
var b = binaryReader.ReadByte();
var readList = binaryReader.ReadStringList();
});
}
[ContractTestCase]
public void WriteHead()
{
"尝试写入长度小于指定长度的头，可以写入和读取".Test(() =>
{
// Arrange
var memoryStream = new MemoryStream();
var binaryWriter = new BinaryWriter(memoryStream);
var head = "Font Data 1.0.0";
var length = 20;
var test = (byte)0xF1;
// Action
binaryWriter.WriteHead(head, length);
binaryWriter.Write(test);
// Assert
memoryStream.Seek(0, SeekOrigin.Begin);
var binaryReader = new BinaryReader(memoryStream);
var str = binaryReader.ReadHead(length);
var b = binaryReader.ReadByte();
Assert.AreEqual(head, str);
Assert.AreEqual(test, b);
});
}
}上面代码需要使用 CUnit 库的支持，才能在单元测试里面使用中文写条件
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