mysql connector详解_MySQL Connector 编程

#include

#include#include

//使用静态对象库//#pragma comment(lib, “C:\\Program Files\\MySQL\\MySQL Connector C 6.1\\lib\\vs12\\mysqlclient.lib”)//使用动态链接库//确保 libmysql.dll 在系统路径中可以搜到

#pragma comment(lib, “C:\\Program Files\\MySQL\\MySQL Connector C 6.1\\lib\\libmysql.lib”)

voidsimpleUsega()

{

MYSQL*conn;

conn=mysql_init(NULL);if (conn ==NULL) {

printf(“Error %u: %s\n”, mysql_errno(conn), mysql_error(conn));

exit(1);

}if (mysql_real_connect(conn, “localhost”, “user_name”,”user_password”, NULL, 0, NULL, 0) ==NULL) {

printf(“Error %u: %s\n”, mysql_errno(conn), mysql_error(conn));

exit(1);

}if (mysql_query(conn, “create database frist_db”)) {

printf(“Error %u: %s\n”, mysql_errno(conn), mysql_error(conn));

exit(1);

}

mysql_close(conn);

}

int main() {

MYSQL*mysql =NULL;char pwd[1024];char usr[1024];

printf(“Target platform word length : %d \n”, sizeof(void*) );

printf(“Connector version: %s \n”, mysql_get_client_info());//simpleUsage();//return 0;

printf(“Initializing MySQL Connector… \n”);

mysql_library_init(0, NULL, NULL); //在其他work线程产生之前初始化mysql c库, 不要让mysql_init来调用, 否则可能导致线程安全问题

if (!(mysql =mysql_init(NULL))) {

printf(“Field. \n”);gotoend;

}

printf(“OK, Conecting… \n”);

// 配置用户和密码if (0) {

printf(“Please keyin user_name and password \n”

“name:”);

scanf_s(“%s”, usr, 1024);

printf(“pwd :”);

scanf_s(“%s”, pwd, 1024);

}else{

sprintf_s(usr,1024, “default_user_name”);

sprintf_s(pwd,1024, “default_user_password”);

}

// 连接 localhost 上的服务器if (!mysql_real_connect(mysql, “localhost”, usr, pwd, (const char*) 0, 3306, NULL, 0)) {

printf(“Filed, Error %u, %s \n”, mysql_errno(mysql), mysql_error(mysql) );gotoend;

}

printf(“Login succeed. \n”);//销毁密码

sprintf_s(pwd, 1024, “00000000000000”);

// 查询数据库服务器时间

mysql_query(mysql,”SELECT NOW();”);if (!mysql_errno(mysql)) {

MYSQL_RES*result;

MYSQL_ROW row;intnum_fields;inti;

result=mysql_store_result(mysql);

num_fields=mysql_num_fields(result);while ((row =mysql_fetch_row(result)))

{for(i = 0; i < num_fields; i++)

{

printf(“%s”, row[i] ? row[i] : “NULL”);

}

printf(“\n”);

}

mysql_free_result(result);

}

end:

system(“pause”);

mysql_close(mysql);

mysql_library_end();

return 0;

}