• VS2012中 C++ API 连接mysql 6.0


    Mysql安装包中提供了自己的API,使用前需要添加几个东西,右键新建的项目,选属性,做如下3点设置。

    我的MySQL安装目录是E:Program FilesMySQLMySQL Server 6.0.....,大家根据自己安装目录改一下就成了。

    1. 设置“附加包含目录”

      

    2、设置附加库目录

      

    3、填好附加依赖项

      

    下面就直接上代码吧~~:

    注:程序里面用到的函数官网都有详细的说明和使用文档,

      详情戳这里:http://dev.mysql.com/doc/refman/5.1/zh/apis.html#c-api-functions

    #include <windows.h>
    #include <winsock.h>
    #include <mysql.h>
    #include <iostream>
    #include <string>
    
    using namespace std;
    
    #define DEBUG
    
    int main(int argv, char* arvs[]) {
        MYSQL mydata;
        if(mysql_library_init(0, NULL, NULL) == 0) {
            cout << "mysql_library_init() succeed" << endl;
        }
        else {
            cout << "mysql_library_init() failed" << endl;
            return  -1;
        }
    
    #ifdef DEBUG
        system("pause");
    #endif
    
        if(mysql_init(&mydata) != nullptr) {
            cout << "mysql_init() succeed" << endl;
        }
        else {
            cout << "mysql_init() failed" << endl;
            return  -1;
        }
        
    #ifdef DEBUG
        system("pause");
    #endif
    
        if(mysql_options(&mydata, MYSQL_SET_CHARSET_NAME, "gbk") == 0) {
            cout << "mysql_options() succeed" << endl;
        }
        else {
            cout << "mysql_options() failed" << endl;
            return  -1;
        }
    
    #ifdef DEBUG
        system("pause");
    #endif
    
        if(mysql_real_connect(&mydata, "localhost", "root", "momo", "adserving",
            3306, NULL, 0) != nullptr) {
            cout << "mysql_real_connect() succeed" << endl;
        }
        else {
            cout << "mysql_real_connect() failed" << endl;
            return  -1;
        }
    
    #ifdef DEBUG
        system("pause");
    #endif
    
        string sqlstr;
        sqlstr = "create table if not exists user_info
                  (
                    user_id int unsigned not null auto_increment primary key comment 'Unique User ID',
                    user_name varchar(100) character set gb2312 collate
                        gb2312_chinese_ci NULL comment 'Name of User',
                    user_second_sum int unsigned not null default 0 comment 'The Sumation of Using Time'
                    )";
        if(mysql_query(&mydata, sqlstr.c_str()) == 0) {
            cout << "mysql_query() create table succed" << endl;
        }
        else {
            cout << "mysql_query() create table failed" << endl;
            mysql_close(&mydata);
            return  -1;
        }
    
    #ifdef DEBUG
        system("pause");
    #endif
    
        sqlstr = "insert into user_info values (1, '中文', 11)";
        if(mysql_query(&mydata, sqlstr.c_str()) == 0) {
            cout << "mysql_query() insert data succeed" << endl;
        }
        else {
            cout << "mysql_query() insert data failed" << endl;
            mysql_close(&mydata);
            return  -1;
        }
    #ifdef DEBUG
        system("pause");
    #endif
    
        sqlstr = "select user_id, user_name, user_second_sum from user_info";
        MYSQL_RES *result = nullptr;
        if(mysql_query(&mydata, sqlstr.c_str()) == 0) {
            cout << "mysql_query() select data succeed" << endl;
            result = mysql_store_result(&mydata);
            int rowcount = mysql_num_rows(result);
            cout << "row count: " << rowcount << endl;
            size_t fieldcount = mysql_num_fields(result);
            MYSQL_FIELD *field = NULL;
            for(size_t i = 0; i < fieldcount; i++) {
                field = mysql_fetch_field_direct(result, i);
                cout << field->name << "		";
            }
            cout << endl;
            MYSQL_ROW row = nullptr;
            row = mysql_fetch_row(result);
            while(row != nullptr) {
                for(int i = 0; i < fieldcount; i++){
                    cout << row[i] << "		";
                }
                cout << endl;
                row = mysql_fetch_row(result);
            }
        }
        else {
            cout << "mysql_query() select data failed" << endl;
            mysql_close(&mydata);
            return  -1;
        }
    
    #ifdef DEBUG
        system("pause");
    #endif
    
        sqlstr = "drop table user_info";
        if(mysql_query(&mydata, sqlstr.c_str()) == 0) {
            cout << "mysql_query() drop table succed" << endl;
        }
        else {
            cout << "mysql_query() drop table failed" << endl;
            mysql_close(&mydata);
            return  -1;
        }
        mysql_free_result(result);
        mysql_close(&mydata);
        mysql_server_end();
        system("pause");
        return  0;
    }

    运行结果如下图:

       

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  • 原文地址:https://www.cnblogs.com/aaronzlq/p/3608597.html
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