使用示例代码测试 mongocxx c++ 驱动程序

Testing mongocxx c++ driver with a sample code

本文关键字：mongocxx c++ 驱动程序 测试 代码      更新时间：2023-10-16

我正在尝试在我的C++示例代码中将mongdb与mongocxx驱动程序连接起来。我添加了其他包含、库和依赖项。当我构建它时，它显示以下错误。

这是完整的代码 

#include "stdafx.h"
#include <cstdint>
#include <iostream>
#include <vector>
#include <bsoncxx/json.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/uri.hpp>
#include <mongocxx/stdx.hpp>
using bsoncxx::builder::stream::close_array;
using bsoncxx::builder::stream::close_document;
using bsoncxx::builder::stream::document;
using bsoncxx::builder::stream::finalize;
using bsoncxx::builder::stream::open_array;
using bsoncxx::builder::stream::open_document;
int main() {
    std::cout << "Hello, World!" << std::endl;
    mongocxx::instance instance{}; // This should be done only once.
    mongocxx::uri uri("mongodb://localhost:27017");
    mongocxx::client client(uri);
    return 0;
}
thi

s 是错误输出。 

Severity    Code    Description Project File    Line    Suppression State
Error   LNK1120 10 unresolved externals MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1x64ReleaseMongoCTest1.exe   1   
Error (active)  E0145   member "bsoncxx::v_noabi::types::b_array::type_id" may not be initialized   MongoCTest1 c:mongo-cxx-driverincludebsoncxxv_noabibsoncxxtypes.hpp   181 
Error (active)  E0145   member "bsoncxx::v_noabi::types::b_binary::type_id" may not be initialized  MongoCTest1 c:mongo-cxx-driverincludebsoncxxv_noabibsoncxxtypes.hpp   206 
Error (active)  E0145   member "bsoncxx::v_noabi::types::b_bool::type_id" may not be initialized    MongoCTest1 c:mongo-cxx-driverincludebsoncxxv_noabibsoncxxtypes.hpp   264 
Error (active)  E0145   member "bsoncxx::v_noabi::types::b_code::type_id" may not be initialized    MongoCTest1 c:mongo-cxx-driverincludebsoncxxv_noabibsoncxxtypes.hpp   421 
Error (active)  E0145   member C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj    1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::instance::instance(void)" (__imp_??0instance@v_noabi@mongocxx@@QEAA@XZ)    MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::instance::~instance(void)" (__imp_??1instance@v_noabi@mongocxx@@QEAA@XZ)   MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::options::client::client(void)" (__imp_??0client@options@v_noabi@mongocxx@@QEAA@XZ) MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::options::client::~client(void)" (__imp_??1client@options@v_noabi@mongocxx@@QEAA@XZ)    MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::uri::uri(class bsoncxx::v_noabi::string::view_or_value)" (__imp_??0uri@v_noabi@mongocxx@@QEAA@Vview_or_value@string@1bsoncxx@@@Z)  MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1   
Error   LNK2001 unresolved external symbol "__declspec(dllimport) public: __cdecl mongocxx::v_noabi::uri::~uri(void)" (__imp_??1uri@v_noabi@mongocxx@@QEAA@XZ)  MongoCTest1 C:UsersNuwanstsourcereposMongoCTest1MongoCTest1MongoCTest1.obj   1

它说它所说的首先初始化了您的驱动程序。 如果已正确编译驱动程序，则这些代码必须正常工作。 

   #include <cstdlib>
   #include <iostream>
   #include <bsoncxx/builder/stream/document.hpp>
   #include <bsoncxx/json.hpp>
   #include <mongocxx/client.hpp>
   #include <mongocxx/instance.hpp>
   #include <mongocxx/uri.hpp>

   using bsoncxx::builder::stream::close_document;
   using bsoncxx::builder::stream::document;
   using bsoncxx::builder::stream::finalize;
   using bsoncxx::builder::stream::open_document;
   mongocxx::instance instance{};// don't put inside main 
int main() {
mongocxx::client conn{ mongocxx::uri{ "mongodb://localhost:27017" } };
auto coll = conn["test"]["coll"];
bsoncxx::builder::stream::document document{};
document << "Data" << "hello";
coll.insert_one(document.view());
return 0;
}

根据此示例，驱动程序在 main 内部启动。

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