c++ - Mysql.h C++ 参数过多

Question

现在，当我编译时，我收到:

/usr/include/mysql/mysql.h:452: error: too many arguments to function int mysql_query(MYSQL*, const char*)

mysql.h 的参数是否有限制？如果有，我该如何解决它？

#include    <mysql/mysql.h>


string unknown = "Unknown";

MYSQL *conn;

conn = mysql_init(NULL);
mysql_real_connect(conn, "localhost", "root", "password", "alert", 0, NULL, 0);

mysql_query(conn, "INSERT INTO alert_tbl (alert_srcip, alert_country, alert_destip, alert_desthost, alert_destport, alert_bl) VALUES ('%s','%s','%s','%s','%s','%s')", src_ip,country_code,dest_ip,unknown,dest_prt,blip);

mysql_close(conn);

---

g++ test.c -o test -lstdc++ -I/usr/include/mysql -L/usr/lib/mysql -lmysqlclient

Answer 1

您必须使用mysql_stmt_prepare然后使用 mysql_stmt_bind_param 将参数值一一绑定(bind)

当语句准备好后，使用 mysql_stmt_execute 执行它

或者使用 sprintf():

char query[1024 /* or longer */];

sprintf(query,
     "INSERT INTO alert_tbl"
     "(alert_srcip, alert_country, alert_destip, alert_desthost, alert_destport, "
     "alert_bl) VALUES ('%s','%s','%s','%s','%s','%s')",
     src_ip,country_code,dest_ip,unknown,dest_prt,blip);

mysql_query(conn, query);