C++ VS2010上带有模板实现的未解析外部符号

我刚刚构建了一个boost网络的模板实现

下面是调用我的网络类的模板类：

AbstractNetwork.hpp :

#include "Network.hpp"

template <typename T, typename R, typename S, typename A>
class       AbstractNetwork
{
private:
    T       connection;

public:
AbstractNetwork(A acceptor)
{
    connection = T::create(acceptor);
}

void write(const R msg)
{
    connection->Swrite(msg);
}

R read(void)
{
    connection->Sread();
    return (connection->getIdata());
}

S getSocket(void)
{
    return (connection->getSocket());
}

void close(void)
{
    connection->close();
}
};

我并没有给出所有函数的代码，因为它太长了，而且我确信它可以工作

当我构建此项目时，在VS2010 ultimate下出现以下错误：

error LNK2001: unresolved external symbol "public: void __thiscall AbstractNetwork<class boost::shared_ptr<class Network>,struct Commande *,class boost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<class boost::asio::ip::tcp> > &,class boost::asio::io_service &>::close(void)"

error LNK2001: unresolved external symbol "public: void __thiscall AbstractNetwork<class boost::shared_ptr<class Network>,struct Commande *,class boost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<class boost::asio::ip::tcp> > &,class boost::asio::io_service &>::write(struct Commande * const)"

error LNK2001: unresolved external symbol "public: class boost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<class boost::asio::ip::tcp> > & __thiscall AbstractNetwork<class boost::shared_ptr<class Network>,struct Commande *,class boost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<classboost::asio::ip::tcp> > &,class boost::asio::io_service &>::getSocket(void)"

error LNK2001: unresolved external symbol "public: __thiscall AbstractNetwork<class boost::shared_ptr<class Network>,struct Commande *,class boost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<class boost::asio::ip::tcp> > &,class boost::asio::io_service &>::AbstractNetwork<class boost::shared_ptr<class Network>,struct Commande *,classboost::asio::basic_stream_socket<class boost::asio::ip::tcp,class boost::asio::stream_socket_service<class boost::asio::ip::tcp> > &,class boost::asio::io_service &>(class boost::asio::io_service &)

它很长，但我想告诉你所有这些错误，因为我认为问题出在我的模板类型上。所以我想我的问题是AbstractNetwork.hpp，但我找不到这个

---

你对此有什么想法吗？

修改你的课程。您不需要为每个类成员函数重复模板，它们已经是模板类的一部分了

template <typename T, typename R, typename S, typename A>
class       AbstractNetwork
{
private:
    T       connection;

public:
AbstractNetwork(A acceptor)
{
    this->connection = T::create(acceptor);
}

void write(const R msg)
{
    this->connection->Swrite(msg);
}

read(void)
{
    this->connection->Sread();
    return (this->connection->getIdata());
}

getSocket(void)
{
    return (this->connection->getSocket());
}

close(void)
{
    this->close(); //  <<--- is this a mistake?
    //Probably you wanted this->connection->close();
}

};

---

除了近处明显的输入错误外，您也不需要在任何地方都使用它，因为它是多余的，使代码看起来更混乱。

您是否编写了包含这些方法实现的Network.cpp源代码文件？你把它添加到你的项目中了吗？链接器错误说你没有。是的，是的，我的项目中有一个Network.cpp，我没有给出这个，因为它太长了，我确信他在我的项目中，因为我在添加我的抽象网络之前编写并测试了这个。是的，是的，这是一个错误，对不起。我正在进行这些更正。现在出现以下错误：错误C2039:“创建”：不是“boost:：shared_ptr”的成员，错误C3861:“创建”：标识符未找到您正在以T的形式传递一个类，该类未实现您期望的静态T:：create接口。解决这个问题。我很高兴您原来的问题已经解决了。您的意思是将connection=static T:：createacceptor@Yumino-你应该打开一个新问题，并在那里发布相关代码，这样你就可以得到一个合理可靠的答案。我要说的是，作为T传递的类没有名为create的静态成员。我不知道它是哪个类，它有什么，所以我不知道你应该如何修复它。这与我在这里回答的问题完全无关。

template <typename T, typename R, typename S, typename A>
class       AbstractNetwork
{
private:
    T       connection;

public:
AbstractNetwork(A acceptor)
{
    this->connection = T::create(acceptor);
}

void write(const R msg)
{
    this->connection->Swrite(msg);
}

read(void)
{
    this->connection->Sread();
    return (this->connection->getIdata());
}

getSocket(void)
{
    return (this->connection->getSocket());
}

close(void)
{
    this->close(); //  <<--- is this a mistake?
    //Probably you wanted this->connection->close();
}

};