实例解析C++/CLI的串行化
【IT168技术文档】
串行化可使对象被转换为某种外部的形式,比如以文件存储的形式供程序使用,或通过程序间的通讯发送到另一个处理过程。转换为外部形式的过程称为"串行化",而逆过程称为"反串行化"。
简介
请看例1中的示例,其将多个对象类型的值写入到一个新的磁盘文件中,关闭文件,接着再把这些值重新读取到内存中。
例1:
using namespace System; using namespace System::IO; using namespace System::Runtime::Serialization::Formatters::Binary; int main() { array<int>^ intArray = {10, 20, 30}; array<float,2>^ floatArray = { {1.2F, 2.4F}, {3.5F, 6.8F}, {8.4F, 9.7F} }; DateTime dt = DateTime::Now; Console::WriteLine("dt >{0}<", dt); /*1*/ BinaryFormatter^ formatter = gcnew BinaryFormatter; //将数据串行化到一个文件 /*2*/ Stream^ file = File::Open("Sr01.ser", FileMode::Create); /*3a*/ formatter->Serialize(file, "Hello"); /*3b*/ formatter->Serialize(file, intArray); /*3c*/ formatter->Serialize(file, floatArray); /*3d*/ formatter->Serialize(file, true); /*3e*/ formatter->Serialize(file, dt); /*3f*/ formatter->Serialize(file, 1000); /*3g*/ formatter->Serialize(file, L'X'); /*3h*/ formatter->Serialize(file, 1.23456F); /*4*/ file->Close(); //从文件中反串行化数据--即读取数据 /*5*/ file = File::Open("Sr01.ser", FileMode::Open); /*6a*/ String^ s = static_cast<String^>(formatter->Deserialize(file)); Console::WriteLine("String >{0}<", s); /*6b*/ array<int>^ newIntArray = static_cast<array<int>^>(formatter->Deserialize(file)); Console::WriteLine("newIntArray:"); for (int i = 0; i < newIntArray->Length; ++i) { Console::Write(" {0}", newIntArray[i]); } Console::WriteLine(); /*6c*/ array<float,2>^ newFloatArray = static_cast<array<float,2>^>(formatter->Deserialize(file)); Console::WriteLine("newFloatArray:"); for (int i = 0; i < 3; ++i) { for (int j = 0; j < 2; ++j) { Console::Write(" {0}", newFloatArray[i,j]); } Console::WriteLine(); } /*6d*/ bool b = static_cast<bool>(formatter->Deserialize(file)); Console::WriteLine("bool >{0}<", b); /*6e*/ DateTime newDT = static_cast<DateTime>(formatter->Deserialize(file)); Console::WriteLine("newDT >{0}<", newDT); /*6f*/ int v = static_cast<int>(formatter->Deserialize(file)); Console::WriteLine("int >{0}<", v); /*6g*/ wchar_t c = static_cast<wchar_t>(formatter->Deserialize(file)); Console::WriteLine("wchar_t >{0}<", c); /*6h*/ float f = static_cast<float>(formatter->Deserialize(file)); Console::WriteLine("float >{0}<", f); /*7*/ file->Close(); }
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