c++ - mysql C++ 中的连接崩溃

Question

目前，我已经实现了一个写入 mysql 数据库的程序...我也在使用带有 C++ 的 Xcode。我已经正确地导入了所有的库，但是我在这一行收到了 BAD EXCESS 错误消息:

    con = driver->connect("tcp://127.0.0.1:3306", "root", "root");

似乎是什么问题？这是完整的程序...

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

// Include directly the different
// headers from cppconn/ and mysql_driver.h + mysql_util.h
// (and mysql_connection.h). This will reduce your build time!

#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;
    try {
        sql::Driver *driver;
        sql::Connection *con;
        sql::Statement *stmt;
        sql::ResultSet *res;
        // Create a connection 
        driver = get_driver_instance();

        con = driver->connect("tcp://127.0.0.1:3306", "root", "root");
        // 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;
    return EXIT_SUCCESS;
}

编辑 目前，我查看了这个 topic这与我的几乎完全相似，但我仍然很迷茫......我将如何使用 cmake 重新编译 mysql 并更改这些标志？

我已经处理这个问题好几个小时了，但没有真正完成任何编码......只是用一张脸盯着我的屏幕>:(。

Answer 1

这里有一个类似的问题(几乎一模一样？)，你检查了吗？

• MySQL Connector/C++ BAD ACCESS crash