我在官网下了mysql-connector-c++-8.0.17之后跑官网上的例程，抛出了下面这个错误：
Connector/C++ standalone program example...
Creating session on tcp://127.0.0.1 ...
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
已放弃 (核心已转储)
我想知道是哪里出了问题，应该怎么解决
我用的系统是Ubuntu 18.04.4
下面是我的cmake
cmake_minimum_required(VERSION 3.10)
project(SERVER)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
# Boost Library
set(BOOST_INC_DIR /usr/local/include)
set(BOOST_LIB_DIR /usr/local/lib)
include_directories(${BOST_INC_DIR})
link_directories(${BOOST_LIB_DIR})
add_subdirectory(src)
# Class MySqlConnector referenced by Class MySqlSession
set(MYSQLCONNECTOR_LIB_DIR /usr/local/lib/mysql-connector-c++)
set(MYSQLCONNECTOR_INC_DIR /usr/local/include)
set(MYSQLCONNECTOR_SRC mysqlcppconn)
include_directories(${MYSQLCONNECTOR_INC_DIR} ${SQL_INC_DIR})
link_directories(${MYSQLCONNECTOR_LIB_DIR})
add_executable(Server main.cpp)
target_link_libraries(Server ${MYSQLCONNECTOR_SRC})
/*
* Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2.0, as
* published by the Free Software Foundation.
*
* This program is also distributed with certain software (including
* but not limited to OpenSSL) that is licensed under separate terms,
* as designated in a particular file or component or in included license
* documentation. The authors of MySQL hereby grant you an
* additional permission to link the program and your derivative works
* with the separately licensed software that they have included with
* MySQL.
*
* Without limiting anything contained in the foregoing, this file,
* which is part of MySQL Connector/C++, is also subject to the
* Universal FOSS Exception, version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License, version 2.0, for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
Basic example of an application using JDBC API of Connector/C++
*/
/* Standard C++ includes */
#include <stdlib.h>
#include <iostream>
#include <sstream>
#include <stdexcept>
/*
Note: Boost must be in the include path to build code which uses the
JDBC API.
*/
#include <boost/scoped_ptr.hpp>
#include <mysql/jdbc.h>
#define DEFAULT_URI "tcp://127.0.0.1"
#define EXAMPLE_USER "root"
#define EXAMPLE_PASS ""
#define EXAMPLE_DB "test"
using namespace std;
/*
Usage example for Driver, Connection, (simple) Statement, ResultSet
*/
int main(int argc, const char **argv)
{
const char *url = (argc > 1 ? argv[1] : DEFAULT_URI);
const string user(argc >= 3 ? argv[2] : EXAMPLE_USER);
const string pass(argc >= 4 ? argv[3] : EXAMPLE_PASS);
const string database(argc >= 5 ? argv[4] : EXAMPLE_DB);
cout << endl;
cout << "Connector/C++ standalone program example..." << endl;
cout << endl;
try {
sql::Driver * driver = sql::mysql::get_driver_instance();
/* Using the Driver to create a connection */
cout << "Creating session on " << url << " ..."
<< endl << endl;
boost::scoped_ptr< sql::Connection >
con(driver->connect(url, user, pass));
con->setSchema(database);
boost::scoped_ptr< sql::Statement > stmt(con->createStatement());
boost::scoped_ptr< sql::ResultSet >
res(stmt->executeQuery("SELECT 'Welcome to Connector/C++' AS _message"));
cout << "\t... running 'SELECT 'Welcome to Connector/C++' AS _message'"
<< endl;
while (res->next())
{
cout << "\t... MySQL replies: " << res->getString("_message") << endl;
cout << "\t... say it again, MySQL" << endl;
cout << "\t....MySQL replies: " << res->getString(1) << endl;
}
}
catch (sql::SQLException &e)
{
/*
The JDBC API throws three different exceptions:
- sql::MethodNotImplementedException (derived from sql::SQLException)
- sql::InvalidArgumentException (derived from sql::SQLException)
- sql::SQLException (derived from std::runtime_error)
*/
cout << "# ERR: SQLException in " << __FILE__;
cout << "(" << "EXAMPLE_FUNCTION" << ") on line " << __LINE__ << endl;
/* Use what() (derived from std::runtime_error) to fetch the error message */
cout << "# ERR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << " )" << endl;
return EXIT_FAILURE;
}
cout << endl;
cout << "... find more at http://www.mysql.com" << endl;
cout << endl;
return EXIT_SUCCESS;
}
