Qt-学生管理软件实现(QSQLITE方式)

信息查询，通过添加学生到数据表，绑定QTableWidget显示
QSQLITE下命令
增加:insert
删除:delete
查找:select
修改:update

显示效果
主界面:

加载数据库

//创建一个数据库连接 db = QSqlDatabase::addDatabase("QSQLITE"); //打开数据库文件 db.setDatabaseName("./dbfile/dbinfo.db"); if(!db.open()) { QMessageBox::question(this,"提示","db open file","确认"); return ; } /*创建数据表 姓名，学号，性别，年龄，学院，住址，手机号*/ QSqlQuery query; QString str = QString("create table if not exists info(id int primary key,name TEXT,stunum TEXT,rad TEXT,age TEXT, coll TEXT, addr TEXT, phone TEXT)"); query.exec(str);

信息管理

设置表格

m_tabWidget = new QTableWidget(this); m_tabWidget->setGeometry(0,130,700,360); m_tabWidget->setSelectionBehavior(QAbstractItemView::SelectRows); //设置选择行为，以行为单位 m_tabWidget->setSelectionMode(QAbstractItemView::SingleSelection); //设置选择模式，选择单行 m_tabWidget->setColumnCount(list.count()); //设置列数 m_tabWidget->setHorizontalHeaderLabels(list); m_tabWidget->setRowCount(0); //设置行数/

 

 

 

 

 

 

 

 

 

 

 

添加操作

/*姓名，学号，性别，年龄，学院，住址，手机号*/ QSqlQuery query; QString str = QString("insert into info values(:id, :name, :stunum, :rad, :age, :coll, :addr, :phone)"); query.prepare(str); //query.bindValue(":id",6); query.bindValue(":name",name); query.bindValue(":stunum",stunum); query.bindValue(":rad",rad); query.bindValue(":age",age); query.bindValue(":coll",coll); query.bindValue(":addr",addr); query.bindValue(":phone",phone); query.exec();

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

修改操作，跟增加类似

/*姓名，学号，性别，年龄，学院，住址，手机号*/ QSqlQuery query; QString str = QString("update info set stunum='%1', name='%2',rad='%3',age='%4',coll='%5',addr='%6',phone='%7' where stunum='%8'") .arg(stunum) .arg(name) .arg(rad) .arg(age) .arg(coll) .arg(addr) .arg(phone) .arg(stuNumber); query.exec(str);

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

查询，排序操作

for(int i = 0; i < m_sortNowTotal; i ++) { intBuf[i] = m_sortNowList[i].at(2).toInt(); } //冒泡排序 for(int i = 0; i < m_sortNowTotal-1; i ++) { for(int j = 0; j < m_sortNowTotal-1-i; j ++) { if(intBuf[j] > intBuf[j+1]) { swap(&intBuf[j],&intBuf[j+1]); } } } //排序学号后, 取出整行数据 for(int i = 0; i < m_sortNowTotal; i ++) { for(int j = 0; j < m_sortNowTotal; j ++) { if(intBuf[i] == m_sortNowList[j].at(2).toInt()) { m_listSort[i] = m_sortNowList[j]; } } } m_tabWidget->setRowCount(m_sortNowTotal); for(int i = 0; i < m_sortNowTotal; i ++) { m_tabWidget->setItem(i,0,new QTableWidgetItem(QString::number(i))); m_tabWidget->setItem(i,1,new QTableWidgetItem(m_listSort[i].at(1))); m_tabWidget->setItem(i,2,new QTableWidgetItem(m_listSort[i].at(2))); m_tabWidget->setItem(i,3,new QTableWidgetItem(m_listSort[i].at(3))); m_tabWidget->setItem(i,4,new QTableWidgetItem(m_listSort[i].at(4))); m_tabWidget->setItem(i,5,new QTableWidgetItem(m_listSort[i].at(5))); m_tabWidget->setItem(i,6,new QTableWidgetItem(m_listSort[i].at(6))); m_tabWidget->setItem(i,7,new QTableWidgetItem(m_listSort[i].at(7))); }

根据3种方式查询 switch (ui->combox_find->currentIndex()) {   case 1: qDebug()<<"姓名";   for(int i = 0; i < m_total; i ++) { if(m_alist[i].at(1).contains(ui->lineEdit->text(),Qt::CaseInsensitive)) { m_tabWidget->clearContents();   nowRow[count] = i;   count++;   //qDebug()<<"nowRow:"< } } showFindTable(count,nowRow);   break;   case 2: qDebug()<<"学号";   for(int i = 0; i < m_total; i ++) { if(m_alist[i].at(2).contains(ui->lineEdit->text(),Qt::CaseInsensitive)) { m_tabWidget->clearContents();   nowRow[count] = i;   count++;   qDebug()<<"now:"< } } showFindTable(count,nowRow);   break;   case 3: qDebug()<<"院校";   for(int i = 0; i < m_total; i ++) { if(m_alist[i].at(5).contains(ui->lineEdit->text(),Qt::CaseInsensitive)) { m_tabWidget->clearContents();   nowRow[count] = i;   count++;   //qDebug()<<"now:"< } } showFindTable(count,nowRow);   break; default: QMessageBox::question(this,"提示","请选择查询方式","确认"); break; } void Window_Info::showFindTable(qint16 count,qint16 *rowCount) { m_sortNowTotal = count;   for(int i = 0; i < count; i ++) { m_tabWidget->setRowCount(count); //设置行数 m_tabWidget->setItem(i,0,new QTableWidgetItem(m_alist[rowCount[i]].at(0))); m_tabWidget->setItem(i,1,new QTableWidgetItem(m_alist[rowCount[i]].at(1))); m_tabWidget->setItem(i,2,new QTableWidgetItem(m_alist[rowCount[i]].at(2))); m_tabWidget->setItem(i,3,new QTableWidgetItem(m_alist[rowCount[i]].at(3))); m_tabWidget->setItem(i,4,new QTableWidgetItem(m_alist[rowCount[i]].at(4))); m_tabWidget->setItem(i,5,new QTableWidgetItem(m_alist[rowCount[i]].at(5))); m_tabWidget->setItem(i,6,new QTableWidgetItem(m_alist[rowCount[i]].at(6))); m_tabWidget->setItem(i,7,new QTableWidgetItem(m_alist[rowCount[i]].at(7))); m_sortNowList[i] = m_alist[rowCount[i]]; } }