Qt中SQLite数据库编程

1、要支持数据库编程，首先在工程文件中增加：

QT +=  sql  
 
头文件：#include <QtSql> 

2、下面新建一个数据库test,然后新建一个表test_table，在表中新建两个字段：id,name。然后查询表，并显示。

QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");    
   //db.setHostName("fedora12");     
   db.setDatabaseName("test");    
   //db.setUserName("jdh");     
   //db.setPassword("123456");     
   if (!db.open())    
   {    
       cout << "shu ju ku dabukai!!!!!!!" << endl;    
   }    
    
   cout << "shu ju ku cao zuo---------------!!!!!!!" << endl;    
   QSqlQuery q;    
   if (q.exec("CREATE TABLE test_table (id INT PRIMARY KEY,name VARCHAR)") == false)    
   {    
       cout << "shu ju ku dabukai22222222!!!!!!!" << endl;    
   }    
   q.exec("insert into test_table values (8,'LiLei')");    
   q.exec("insert into test_table values (46,'HanMeiMei')");    
   q.exec("select * from test_table");    
   while (q.next())    
   {    
       cout << "caozuo!!" << endl;    
       int id = q.value(0).toInt();    
       QString name = q.value(1).toString();    
       qDebug() << id << name << endl;    
   }    
 QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");  
    //db.setHostName("fedora12");  
    db.setDatabaseName("test");  
    //db.setUserName("jdh");  
    //db.setPassword("123456");  
    if (!db.open())  
    {  
        cout << "shu ju ku dabukai!!!!!!!" << endl;  
    }  
 
    cout << "shu ju ku cao zuo---------------!!!!!!!" << endl;  
    QSqlQuery q;  
    if (q.exec("CREATE TABLE test_table (id INT PRIMARY KEY,name VARCHAR)") == false)  
    {  
        cout << "shu ju ku dabukai22222222!!!!!!!" << endl;  
    }  
    q.exec("insert into test_table values (8,'LiLei')");  
    q.exec("insert into test_table values (46,'HanMeiMei')");  
    q.exec("select * from test_table");  
    while (q.next())  
    {  
        cout << "caozuo!!" << endl;  
        int id = q.value(0).toInt();  
        QString name = q.value(1).toString();  
        qDebug() << id << name << endl;  
    } 

　　如果数据库名称为:memory:,则只在内存中建立表.