QT 连接SQLServer
QtSql虽说提供了通用的数据库访问接口,可是有些数据库就是不太通用, 在windows下用QT连接sqlserver,折腾了半天. 一. 配置 1. 启用TCP/IP 安装好sqlserver2005后, 开始菜单找到 配置工具-SQL Server配置管理器: SQLEXPRESS 的协议,启用TCP/IP,启用相应IP地址;
QtSql虽说提供了通用的数据库访问接口,可是有些数据库就是不太通用, 在windows下用QT连接sqlserver,折腾了半天.
一. 配置
1. 启用TCP/IP
安装好sqlserver2005后, 开始菜单找到 配置工具->SQL Server配置管理器:
SQLEXPRESS 的协议,启用TCP/IP,启用相应IP地址; SQL Native Client 配置, 客户端协议, 启动TCP/IP, TCP/IP属性设置监听1433端口
2. 启用远程连接
配置工具->SQL Server外围应用配置器-> 本地连接和远程连接,勾选同时使用TCP/IP和named pipes即可
二. 测试
方法一:
Cpp代码
- QSqlDatabase OpenDB()
- {
- QSqlDatabase db=QSqlDatabase::addDatabase("QODBC");
- // 注意,对于express版本数据库, 一定要加\\sqlexpress这种后缀
- QString dsn="DRIVER={SQL SERVER};SERVER=192.168.10.22\\sqlexpress;DATABASE=sqlscada";
- db.setDatabaseName(dsn);
- db.setUserName("sa");
- db.setPassword("scada");
- if(!db.open())
- {
- qDebug("Error:%s",qPrintable(db.lastError().text()));
- return db;
- }
- return db;
- }
连接数据库时, 一直连不上报错: ConnectionOpen (Invalid Instance()) , 连接无效, 结果发现微软对express版本数据库是有限制的, 在SERVER字段添加\\sqlexpress这样后缀, 连接OK
方法二: 设置数据源,指定dsn即可
控制面板->系统和安全->管理工具->数据源(ODBC)
代码:
Cpp代码
- QSqlDatabase db=QSqlDatabase::addDatabase("QODBC");
- db.setDatabaseName("testdsn");
- db.setUserName("sa");
- db.setPassword("scada");

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