VS2022 C++ 连接 MySQL8

前置要求：

下载安装 VS2022，MySQL8。

然后，配置 VS 环境。

之后，就是把相关的头文件和库目录添加到配置中：

之后，还要将 libmysql.lib 文件添加到项目的根目录下：

然后，我们可以写一个简单的查询来测试一下：

#define _CRT_SECURE_NO_WARNINGS
#include <Windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mysql.h> 
#include <iostream>
using namespace std;

//#pragma comment(lib,"libmysql.lib")

int main()
{
	const char user[] = "root";         //username
	const char pswd[] = "lf123456";     //password
	const char host[] = "localhost";    //or"127.0.0.1"
	const char database[] = "computer_network";       //database   //有相应的数据库
	unsigned int port = 3306;           //server port        
	MYSQL myCont;
	MYSQL_RES* result = NULL;
	MYSQL_ROW sql_row;
	MYSQL_FIELD* fd;
	char column[32][32];
	int res;
	mysql_init(&myCont);
	//auto ret = mysql_real_connect(&myCont, host, user, pswd, database, port, NULL, 0);
	if (mysql_real_connect(&myCont, host, user, pswd, database, port, NULL, 0))
	{
		cout << "connect succeed!" << endl;
		mysql_query(&myCont, "SET NAMES GBK"); //设置编码格式,否则在cmd下无法显示中文
		res = mysql_query(&myCont, "select * from test_tb limit 2");//查询    //database下有相应的表才能成功
		if (!res)
		{
			result = mysql_store_result(&myCont);//保存查询到的数据到result
			if (result)
			{
				int i, j;
				cout << "number of result: " << (unsigned long)mysql_num_rows(result) << endl;
				for (i = 0; fd = mysql_fetch_field(result); i++)//获取列名
				{
					strcpy(column[i], fd->name);
				}
				j = mysql_num_fields(result);
				for (i = 0; i < j; i++)
				{
					printf("%s\t", column[i]);
				}
				printf("\n");
				while (sql_row = mysql_fetch_row(result))//获取具体的数据
				{
					for (i = 0; i < j; i++)
					{
						printf("%s\n", sql_row[i]);
					}
					printf("\n");
				}
			}
		}
		else
		{
			cout << "query sql failed!" << endl;
		}
	}
	else
	{
		cout << "connect failed!" << endl;
	}
	if (result != NULL) mysql_free_result(result);//释放结果资源
	mysql_close(&myCont);//断开连接
	return 0;
}