Re: MySQL, C++, Windows XP: mysql_init() throws an exception

[Slav Blinnikov]

Now try to use "Connector/C++" and the next code:


#include <stdlib.h>
#include <iostream>

#include "mysql_connection.h"

#include <cppconn/driver.h>
#include <cppconn/exception.h>
#include <cppconn/resultset.h>
#include <cppconn/statement.h>

using namespace std;

int main(void)
{
cout << endl;
cout << "Running 'SELECT 'Hello World!' AS _message'..." << endl;

//const char* serverAddress = "127.0.0.1:3306";
const char* serverAddress = "localhost";

try
{
sql::Driver *driver;
sql::Connection *con;
sql::Statement *stmt;
sql::ResultSet *res;

// Create a connection
driver = get_driver_instance();
printf("driver = %p\n", driver);
char buffer[1024];
sprintf(buffer, serverAddress);
con = driver->connect(buffer, "root", "7777777");
// Connect to the MySQL test database
con->setSchema("test");

stmt = con->createStatement();
res = stmt->executeQuery("SELECT 'Hello World!' AS _message");
while (res->next())
{
cout << "\t... MySQL replies: ";
// Access column data by alias or column name
cout << res->getString("_message") << endl;
cout << "\t... MySQL says it again: ";
// Access column fata by numeric offset, 1 is the first column
cout << res->getString(1) << endl;
}
delete res;
delete stmt;
delete con;
}
catch (sql::SQLException &e)
{
cout << "# ERR: SQLException in " << __FILE__;
cout << "(" << __FUNCTION__ << ") on line " << __LINE__ << endl;
cout << "# ERR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << " )" << endl;
}
cout << endl;
getchar();
return 0;
}


fails with exception "Access violation reading location ..." at line "cout << res->getString("_message") << endl;" but console says:

Running 'SELECT 'Hello World!' AS _message'...
driver = 003D4E38
... MySQL replies: Hello World!