MongoDB C/C++开发使用案例Demo

MongoDB C/C++开发使用案例Demo（含源代码例子、编译好的MongoDB C库文件（.h .lib .dll）、开发环境搭建配置文档等），可直接用于项目开发

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include “stdafx.h“
#include 
#include 
#include 
#include 
#include 
#include 
#include 

using namespace std;

/**********************************************************************/
void UnicodeToUTF8（char *utf wchar_t* wszString）
{
	//预转换，得到所需空间的大小  
	int u8Len = ::WideCharToMultiByte（CP_UTF8 NULL wszString wcslen（wszString） NULL 0 NULL NULL）;
	//同上，分配空间要给‘\0‘留个空间  
	//UTF8虽然是Unicode的压缩形式，但也是多字节字符串，所以可以以char的形式保存  
	//转换    //unicode版对应的strlen是wcslen  
	::WideCharToMultiByte（CP_UTF8 NULL wszString wcslen（wszString） utf u8Len NULL NULL）;
	//最后加上‘\0‘  
	utf[u8Len] = ‘\0‘;
}


#if 1
int _tmain（int argc _TCHAR* argv[]）
{
	mongoc_collection_t *collection;
	bson_error_t error;
	bson_t *doc; /*文档名称doc*/
	const bson_t *doc_qurey;
	bson_t  child;
	const char *uristr = “mongodb://localhost:27017“; /*mongodb地址*/
	const char *collection_name = “col“; /*集合名称test*/
	time_t     now = time（0）;
	char       timebuf[256] = {};
	struct  tm  cur_time;
	
	char   *str;
	//bson_t *query;
	mongoc_cursor_t *cursor;
	bson_t query;
	bson_t child2 child3;
	localtime_s（&cur_time &now）;/*获取本地当前时间*/
	strftime（timebuf sizeof（timebuf） “%Y-%m-%d %H:%M:%S“ &cur_time）;/*格式化时间*/
	const char *optime = timebuf;

	//先调用mongoc_init（），libmongoc 的任何其他功能才能正确使用
	mongoc_init（）;/*初始化*/

	// Create a new client instance	
	mongoc_client_t *client = mongoc_client_new（uristr）; /*连线到db */
	if （NULL == client） {
		fprintf（stderr “Failed to parse URI.\n“）;
		return EXIT_FAILURE;
	}
	mongoc_client_set_error_api（client 2）;
	//获取集合名
	collection = mongoc_client_get_collection（client “test“ collection_name）;/*获取集合*/
	/******************写入操作例子如下:************************/
	doc = bson_new（）;	
	BSON_APPEND_UTF8（doc “Titile“ “Test123 “）;	
	BSON_APPEND_UTF8（doc “Nowtime“ optime）;

	//开始一个子文档
	BSON_APPEND_DOCUMENT_BEGIN（doc “subdoc“ &child）;
	BSON_APPEND_UTF8（&child “subkey“ “value“）;
	bson_append_document_end（doc &child）;

	double dval = 12.34;
	char *tm_sample = “2018:30“;
	char buf_json[64] = { 0 };
	sprintf_s（buf_json “[{\“sample_time\“:\“%s\“\“sample_value\“:\“%.2f\“}]“ tm_sample dval）;
	bson_t *bt_arrayOfSample = bson_new_from_json（（const uint8_t *）buf_json
		strlen（buf_json） &error）;
	BSON_APPEND_ARRAY（doc “arrayOfSample“ bt_arrayOfSample）;

	size_t err_offset;
	if （!bson_validate（doc BSON_VALIDATE_NONE &err_offset）） {
		fprintf（stderr
			“The document failed to validate at offset: %u\n“
			（unsigned）err_offset）;
	}

	/*将bson文档插入到集合*/
	if （!mongoc_collection_insert（collection MONGOC_INSERT_NONE doc NULL &error））
	{
		fprintf（stderr “%s\n“ error.message）;
	}

	/**************************************批量写入操作例子如下:*************************************/
	enum N { ndocs = 4 };
	bson_t *docs_bulk[ndocs];
	mongoc_bulk

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-03-19 17:20  MongoDB_Smaples\
     目录           0  2018-03-19 16:24  MongoDB_Smaples\mongo-c-driver\
     目录           0  2018-03-19 16:24  MongoDB_Smaples\mongo-c-driver\include\
     目录           0  2018-03-19 16:24  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\
     文件       10939  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bcon.h
     文件        2836  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-atomic.h
     文件        1007  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-clock.h
     文件        3741  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-compat.h
     文件        2770  2018-02-28 11:14  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-config.h
     文件        1101  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-context.h
     文件        1662  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-decimal128.h
     文件        6474  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-endian.h
     文件        1147  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-error.h
     文件       12473  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-iter.h
     文件        2216  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-json.h
     文件         928  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-keys.h
     文件        7327  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-macros.h
     文件        2837  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-md5.h
     文件        1687  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-memory.h
     文件        6107  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-oid.h
     文件        3431  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-reader.h
     文件        7857  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-stdint-win32.h
     文件          21  2018-02-28 11:14  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-stdint.h
     文件        2461  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-string.h
     文件       17705  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-types.h
     文件        1276  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-utf8.h
     文件         898  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-value.h
     文件        1175  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-version-functions.h
     文件        2500  2018-02-28 11:14  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-version.h
     文件        1751  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson-writer.h
     文件       33300  2018-02-26 12:02  MongoDB_Smaples\mongo-c-driver\include\libbson-1.0\bson.h
............此处省略67个文件信息