vala是专为gnome环境准备的开发语言，之所以vala会出现，是因为目前的glib,gio,gtk+,gnome-lib等等的C语言接口开发 起来实在太繁琐(这个深有感触），而同时，如果采用Java，C++这些东西，那又显得太臃肿。
[C/C++]代码
using MySQL; int main (string[] args) { int rc = 0; ClientFlag cflag = 0; string host = "127.0.0.1"; string user = "root"; string password = ""; string database = "test"; int port = 3306; string socket = null; Database mysql = new Mysql.Database (); var isConnected = mysql.real_connect(host, user, password, database, port, socket, cflag); if ( ! isConnected ) { rc = 1; stdout.printf("ERROR %u: Connection failed: %s\n", mysql.errno(), mysql.error()); return rc; } stdout.printf("Connected to MySQL server version: %s (%lu)\n" , mysql.get_server_info() , (ulong) mysql.get_server_version()); string sql = "SELECT * FROM test LIMIT 10"; rc = mysql.query(sql); if ( rc != 0 ) { stdout.printf("ERROR %u: Query failed: %s\n", mysql.errno(), mysql.error()); return rc; } Result ResultSet = mysql.use_result(); string[] MyRow; while ( (MyRow = ResultSet.fetch_row()) != null ) { stdout.printf("id: %s | data: %s | ts: %s\n", MyRow[0], MyRow[1], MyRow[2]); } // free_result is called automatically // mysql_close is called automatically return rc; }安装 Valasudo apt-key adv --recv-keys --keyserver keyserver.Ubuntu.com 7DAAC99C sudo add-apt-repository ppa:vala-team sudo apt-get update sudo apt-get install valac vala-utils vala-doc valac-dbg valac --version sudo apt-get install libgee-dev sudo apt-get install gedit-vala-plugin vala-gen-project sudo apt-get install valide 编译方法 valac --pkg=mysql --Xcc=-lmysqlclient mysql_ex1.vala --Xcc=-I/home/mysql/src/mysql-5.1.55 \ --Xcc=-L/home/mysql/product/mysql-5.1.55/lib -v