Ubuntu c++ 使用mysql++ 鏈接mysql 使用cmake 構建

首先要安裝MySQL

sudo apt install -y mysql-server mysql-client libmysqlclient-dev

cat /etc/mysql/debian.cnf # 獲取密碼

mysql -udebian-sys-maint -p # 輸入上面現實的密碼

use mysql;

alter user "root"@"localhost" identified with mysql_native_password by "新密碼"; # 設置root密碼
flush privileges;

update user set host='%' where user='root'; # 設置遠程鏈接
flush privileges;

exit # 退出mysql

sudo gedit  /etc/mysql/mysql.conf.d/mysqld.cnf # 打開配置文件修改配置

bind-address        = 0.0.0.0 # 修改，可以遠程鏈接

# 可選項 可以默認
[mysqld]
#
# * Basic Settings
#
max_allowed_packet = 1024M
sql_mode =STRICT_TRANS_TABLES

# 重啟
service mysql restart

安裝mysql++

wget https://tangentsoft.com/mysqlpp/releases/mysql++-3.2.5.tar.gz
tar -zxvf ./mysql++-3.2.5.tar.gz
cd  mysql++-3.2.5
 ./configure
make
make install

創建test數據庫，和abc表，可以使用 navicat，網上有安裝方式

 

創建c++項目，使用Clion 選擇c++17

#include <iostream>
#include <mysql++/mysql++.h>

int main() {

    const char* db = nullptr, *server = nullptr, *user = nullptr, *password = "";
    db = "test";
    server = "localhost";
    user = "root";
    password = "7355608";
    mysqlpp::Connection conn(false);
    if (conn.connect(db, server, user, password)){
        std::cout << "Hello, MySQL!" << std::endl;
        std::cout << "connect db succeed. " <<std::endl;
        mysqlpp::Query query = conn.query("SELECT * FROM abc");
        if (mysqlpp::StoreQueryResult res = query.store()) {
            std::cout.setf(std::ios::left);
            std::cout <<
            std::setw(31) << "name" <<
            std::setw(10) << "age" <<
            std::endl;

            mysqlpp::StoreQueryResult::const_iterator it;

            for (it = res.begin(); it != res.end(); ++it) {
                mysqlpp::Row row = *it;
                std::cout <<
                std::setw(31) << row[0] <<
                std::setw(10) << row[1] <<
                std::endl;
            }
        }
    }
    return 0;
}

CMakeLists.txt 編寫

cmake_minimum_required(VERSION 3.17)
project(sboost)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_COMPILER "g++")
include_directories(/usr/include/mysql)
include_directories(/usr/local/include/mysql++)
add_executable(sboost main.cpp)
target_link_libraries(sboost mysqlpp)

完結！