Question

我正在为一个项目工作2天，在过去的两天里，我一直在寻找一种方法来实现这一目标。我是C ++的新手，我们的Class项目要求我们使用C ++制作5个游戏，然后将它们导出到MySQL数据库以获得高分表。

MySQL数据库完全没问题。我唯一的问题是让C ++连接到MySQL数据库。

所以这里有更多信息，有人可以帮助我。

我正在使用Visual Studio 2010和2012。（就像我有VS 2012，虽然我的学校有2010年，所以我不知道是否有任何兼容性差异，但我也有VS2010）。

我一直在网上搜索这些事情5个小时或更长时间，比如为什么我的“#include”语句不起作用，而且我已经学习了如何进入项目属性并添加不同的包含库。通常在冲浪一段时间之后，我可以弄清楚我哪里出错，但在这里我只是走到了死胡同，因为我能找到的唯一帮助就是说包括加强，我已经做了，但我是彻底难倒到这一步。我的朋友我正在做这个课程的项目正在变得不耐烦，因为这是我们最不得不做的事情。

所以这就是我认为应该包括的内容。

我正在进行的两个测试程序的包含（两者都完全相同）

"Additional Include Directories"
C:\Users\Damian\Desktop\boost_1_53_0\boost_1_53_0\boost
C:\Program Files\MySQL\MySQL Connector C++ 1.1.3\include
C:\Program Files\MySQL\MySQL Server 5.6\include

My Linker-＆gt;“其他图书馆目录”

C:\Users\Damian\Desktop\boost_1_53_0\boost_1_53_0\boost
C:\Program Files\MySQL\MySQL Connector C++ 1.1.3\lib\opt
C:\Program Files\MySQL\MySQL Server 5.6\lib

我试图运行的两个程序的代码。

这是我在Visual Studio 2012上测试的那个

#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

#include <stdlib.h>
#include <Windows.h>
#include <mysql.h>
#include "mysql_connection.h"

#include <cppconn/driver.h>
#define host "localhost"
#define username "username"
#define password "password"
#define database "db_test"

int main()
{
    MYSQL* conn;
    conn = mysql_init( NULL );
    if( conn )
    {
        mysql_real_connect( conn, host, username, password, database, 0, NULL, 0 );
    }
    MYSQL_RES* res_set;
    MYSQL_ROW row;
    unsigned int i;
    mysql_query( conn, "SELECT * FROM tbl_clients WHERE id = 1" ); 
    res_set = mysql_store_result( conn );
    unsigned int numrows = mysql_num_rows( res_set ); 
    if( numrows )
    {
        row = mysql_fetch_row( res_set );
        if( row != NULL )
        {
            cout << "Client ID  : " << row[0] << endl;
            cout << "Client Name: " << row[1] << endl;
        }
    }
    if( res_set )
    {
        mysql_free_result( res_set );
    }
    if( conn )
    {
        mysql_close( conn );
    }

    return 0;
}

这是我试图在Visual Studio 2010上编译的代码

#include <stdio.h>
#define W32_LEAN_AND_MEAN
#include <winsock2.h>
#include "mysql.h"
#include "mysql_connection.h"

#include <cppconn/driver.h>
#include <iostream>

// change these to suit your setup
#define TABLE_OF_INTEREST "highscores"
#define SERVER_NAME "127.0.0.1"
#define DB_USER "root"
#define DB_USERPASS "root"
#define DB_NAME "test"

// prototypes
void showTables(MYSQL*);
void showContents(MYSQL*,const char*);

using namespace std;

int main(int argc, char* argv[])
{
MYSQL *hnd=NULL; // mysql connection handle
const char *sinf=NULL; // mysql server information

hnd = mysql_init(NULL);
if (NULL == mysql_real_connect(hnd,SERVER_NAME,DB_USER,DB_USERPASS,DB_NAME,0,NULL,0))
{
fprintf(stderr,"Problem encountered connecting to the %s database on %s.\n",DB_NAME,SERVER_NAME);
}
else
{
fprintf(stdout,"Connected to the %s database on %s as user '%s'.\n",DB_NAME,SERVER_NAME,DB_USER);
sinf = mysql_get_server_info(hnd);

if (sinf != NULL)
{
fprintf(stdout,"Got server information: '%s'\n",sinf);
showTables(hnd);
showContents(hnd,TABLE_OF_INTEREST);
}
else
{
fprintf(stderr,"Failed to retrieve the server information string.\n");
}

mysql_close(hnd);
}

return 0;
}

void showTables(MYSQL *handle)
{
MYSQL_RES *result=NULL; // result of asking the database for a listing of its tables
MYSQL_ROW row; // one row from the result set

result = mysql_list_tables(handle,NULL);
row = mysql_fetch_row(result);
fprintf(stdout,"Tables found:\n\n");
while (row)
{
fprintf(stdout,"\t%s\n",row[0]);
row = mysql_fetch_row(result);
}
mysql_free_result(result);

fprintf(stdout,"\nEnd of tables\n");

return;
}

void showContents
(
MYSQL *handle,
const char *tbl
)
{
MYSQL_RES *res=NULL; // result of querying for all rows in table
MYSQL_ROW row; // one row returned
char sql[1024], // sql statement used to get all rows
commastr[2]; // to put commas in the output
int i,numf=0; // number of fields returned from the query

sprintf(sql,"select * from %s",tbl);
fprintf(stdout,"Using sql statement: '%s' to extract all rows from the specified table.\n",sql);

if (!mysql_query(handle,sql))
{
res = mysql_use_result(handle);
if (res)
{
numf = mysql_num_fields(res);
row = mysql_fetch_row(res);
fprintf(stdout,"Rows returned:\n\n");
while (row)
{
commastr[0]=commastr[1]=(char)NULL;
for (i=0;i<numf;i++)
{
if (row == NULL)
{
fprintf(stdout,"%sNULL",commastr);
}
else
{
fprintf(stdout,"%s%s",commastr,row);
}
commastr[0]=',';
}
fprintf(stdout,"\n");

row = mysql_fetch_row(res);
}
fprintf(stdout,"\nEnd of rows\n");

mysql_free_result(res);
}
else
{
fprintf(stderr,"Failed to use the result acquired!\n");
}
}
else
{
fprintf(stderr,"Failed to execute query. Ensure table is valid!\n");
}

return;
}

现在这两个都给了我这个错误

1>c:\program files\mysql\mysql connector c++ 1.1.3\include\cppconn\connection.h(31): fatal error C1083: Cannot open include file: 'boost/variant.hpp': No such file or directory
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

请帮忙！注意：我只是尝试成功连接到数据库，因此我可以运行不同的查询和诸如此类的东西。这些程序只是我从其他地方复制的测试。

谢谢！

Answer 1

我认为

"Additional Include Directories"
 C:\Users\Damian\Desktop\boost_1_53_0\boost_1_53_0\boost

需要

"Additional Include Directories"
C:\Users\Damian\Desktop\boost_1_53_0\boost_1_53_0

致命错误C1083：无法打开包含文件：'boost / variant.hpp'：没有这样的文件或目录

1 个答案: