QT: 操作主从视图及XML
按钮绑定信号、槽
控件属性
运行效果：
connectdlg.h
#ifndef CONNECTDLG_H
#define CONNECTDLG_H
#include <QDialog>
#include <QMessageBox>
class QSqlError;
namespace Ui {
class ConnDlg;
}
class ConnDlg : public QDialog
{
Q_OBJECT
public:
// explicit ConnDlg(QWidget *parent = nullptr);
// ~ConnDlg();
explicit ConnDlg(QWidget *parent = 0);
~ConnDlg();
QString driverName() const;
QString databaseName() const;
QString userName() const;
QString password() const;
QString hostName() const;
int port() const;
QSqlError addConnection(const QString &driver, const QString &dbName,
const QString &host, const QString &user,
const QString &passwd, int port = -1);
private:
Ui::ConnDlg *ui;
// Ui::QSqlConnectionDialogUi *ui;
private slots:
void createDB();
void addSqliteConnection();
void on_okButton_clicked();
void on_cancelButton_clicked(){ reject(); }
void driverChanged(const QString &);
};
#endif // CONNECTDLG_H
connectdlg.cpp
#include "connectdlg.h"
#include "ui_connectdlg.h"
#include <QtSql/QSqlDatabase>
#include <QtSql/QSql>
#include <QtSql/QtSql>
ConnDlg::ConnDlg(QWidget *parent) :
QDialog(parent)
,ui(new Ui::ConnDlg)
{
ui->setupUi(this);
QStringList drivers = QSqlDatabase::drivers(); // 查找数据库驱动
ui->comboDriver->addItems(drivers);
connect(ui->comboDriver,SIGNAL(currentIndexChanged(const QString &)),this,
SLOT(driverChanged(const QString &)));
ui->status_label->setText(tr("准备连接数据库！"));
}
QString ConnDlg::driverName() const
{
return ui->comboDriver->currentText();
}
QString ConnDlg::databaseName() const
{
return ui->editDatabase->text();
}
QString ConnDlg::userName() const
{
return ui->editUsername->text();
}
QString ConnDlg::password() const
{
return ui->editPassword->text();
}
QString ConnDlg::hostName() const
{
return ui->editHostname->text();
}
int ConnDlg::port() const
{
return ui->portSpinBox->value();
}
QSqlError ConnDlg::addConnection(const QString &driver, const QString &dbName, const QString &host, const QString &user, const QString &passwd, int port)
{
QSqlError err;
QSqlDatabase db = QSqlDatabase::addDatabase(driver);
db.setDatabaseName(dbName);
db.setHostName(host);
db.setPort(port);
if(!db.open(user,passwd))
{
err = db.lastError();
}
return err;
}
void ConnDlg::createDB()
{
//创建数据库
QSqlQuery query ;
query.exec("create table factory (id int primary key, manufactory varchar(40),"
"address varchar(40) )");
query.exec(QObject::tr("insert into factory values(1,'一汽大众','长春')"));
query.exec(QObject::tr("insert into factory values(2,'二汽神龙','武汉')"));
query.exec(QObject::tr("insert into factory values(3,'上海大众','上海')"));
query.exec("create table cars (carid int primary key, name varchar(50),"
"factoryid int, year int, foreign key(factoryid) references factory"
" )");
query.exec("insert into cars values(1,'奥迪A6',1,2005)");
query.exec("insert into cars values(2,'捷达',1,1993)");
query.exec("insert into cars values(3,'宝来',1,2000)");
query.exec("insert into cars values(4,'毕加索',2,1999)");
query.exec("insert into cars values(5,'富康',2,2004)");
query.exec("insert into cars values(6,'标致',2,2001)");
query.exec("insert into cars values(7,'桑塔纳',3,1995)");
query.exec("insert into cars values(8,'帕萨特',3,2000)");
}
void ConnDlg::addSqliteConnection()
{
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("databasefile.db");
if(!db.open())
{
ui->status_label->setText(db.lastError().text());
return;
}
ui->status_label->setText(tr("创建SQLite数据库成功！"));
}
void ConnDlg::on_okButton_clicked()
{
//
if(ui->comboDriver->currentText().isEmpty()){
ui->status_label->setText(tr("请选择一个数据库驱动！"));
ui->comboDriver->setFocus();
}
else if(ui->comboDriver->currentText() == "QSQLITE")
{
addSqliteConnection();
createDB();//创建数据库表，如已存在则无须执行
accept();
}
else
{
QSqlError err = addConnection(driverName(),databaseName(),hostName(),userName(),
password(),port());
if(err.type() != QSqlError::NoError)
ui->status_label->setText(err.text());
else{
ui->status_label->setText("连接数据库成功！");
accept();
}
}
}
void ConnDlg::driverChanged(const QString &text)
{
//
if(text == "QSQLITE")
{
ui->editDatabase->setEnabled(false);
ui->editUsername->setEnabled(false);
ui->editPassword->setEnabled(false);
ui->editHostname->setEnabled(false);
ui->portSpinBox->setEnabled(false);
}
else
{
ui->editDatabase->setEnabled(true);
ui->editUsername->setEnabled(true);
ui->editPassword->setEnabled(true);
ui->editHostname->setEnabled(true);
ui->portSpinBox->setEnabled(true);
}
}
ConnDlg::~ConnDlg()
{
delete ui;
}
connectdlg.ui 详细代码：
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>ConnDlg</class>
<widget class="QDialog" name="ConnDlg">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>450</width>
<height>397</height>
</rect>
</property>
<property name="windowTitle">
<string>数据库连接</string>
</property>
<widget class="QGroupBox" name="connGroupBox">
<property name="geometry">
<rect>
<x>10</x>
<y>10</y>
<width>431</width>
<height>261</height>
</rect>
</property>
<property name="title">
<string>数据库连接设置</string>
</property>
<widget class="QComboBox" name="comboDriver">
<property name="geometry">
<rect>
<x>170</x>
<y>30</y>
<width>221</width>
<height>22</height>
</rect>
</property>
</widget>
<widget class="QLineEdit" name="editDatabase">
<property name="geometry">
<rect>
<x>170</x>
<y>70</y>
<width>181</width>
<height>21</height>
</rect>
</property>
<property name="text">
<string>databasefile.db</string>
</property>
</widget>
<widget class="QLineEdit" name="editUsername">
<property name="geometry">
<rect>
<x>170</x>
<y>100</y>
<width>181</width>
<height>21</height>
</rect>
</property>
<property name="text">
<string>admin</string>
</property>
</widget>
<widget class="QLineEdit" name="editPassword">
<property name="geometry">
<rect>
<x>170</x>
<y>130</y>
<width>181</width>
<height>21</height>
</rect>
</property>
<property name="text">
<string>123456</string>
</property>
<property name="echoMode">
<enum>QLineEdit::Password</enum>
</property>
<property name="placeholderText">
<string/>
</property>
</widget>
<widget class="QLineEdit" name="editHostname">
<property name="geometry">
<rect>
<x>170</x>
<y>160</y>
<width>181</width>
<height>21</height>
</rect>
</property>
<property name="text">
<string>localhost</string>
</property>
</widget>
<widget class="QSpinBox" name="portSpinBox">
<property name="geometry">
<rect>
<x>170</x>
<y>190</y>
<width>181</width>
<height>22</height>
</rect>
</property>
<property name="maximum">
<number>65535</number>
</property>
</widget>
<widget class="QLabel" name="textLabel2">
<property name="geometry">
<rect>
<x>20</x>
<y>30</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>驱动：</string>
</property>
</widget>
<widget class="QLabel" name="textLabel3">
<property name="geometry">
<rect>
<x>20</x>
<y>70</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>数据库名：</string>
</property>
</widget>
<widget class="QLabel" name="textLabel4">
<property name="geometry">
<rect>
<x>20</x>
<y>100</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>用户名：</string>
</property>
</widget>
<widget class="QLabel" name="textLabel4_2">
<property name="geometry">
<rect>
<x>20</x>
<y>130</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>密码：</string>
</property>
</widget>
<widget class="QLabel" name="textLabel5">
<property name="geometry">
<rect>
<x>20</x>
<y>170</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>主机名：</string>
</property>
</widget>
<widget class="QLabel" name="textLabel5_2">
<property name="geometry">
<rect>
<x>20</x>
<y>200</y>
<width>72</width>
<height>15</height>
</rect>
</property>
<property name="text">
<string>端口：</string>
</property>
</widget>
</widget>
<widget class="QLabel" name="status_label">
<property name="geometry">
<rect>
<x>30</x>
<y>290</y>
<width>391</width>
<height>16</height>
</rect>
</property>
<property name="text">
<string>状态：</string>
</property>
</widget>
<widget class="QWidget" name="horizontalLayoutWidget">
<property name="geometry">
<rect>
<x>20</x>
<y>330</y>
<width>401</width>
<height>41</height>
</rect>
</property>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="okButton">
<property name="text">
<string>连接</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="cancelButton">
<property name="text">
<string>取消</string>
</property>
</widget>
</item>
</layout>
</widget>
</widget>
<resources/>
<connections>
<connection>
<sender>cancelButton</sender>
<signal>clicked()</signal>
<receiver>ConnDlg</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>373</x>
<y>349</y>
</hint>
<hint type="destinationlabel">
<x>224</x>
<y>198</y>
</hint>
</hints>
</connection>
<connection>
<sender>okButton</sender>
<signal>clicked()</signal>
<receiver>ConnDlg</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>274</x>
<y>349</y>
</hint>
<hint type="destinationlabel">
<x>224</x>
<y>198</y>
</hint>
</hints>
</connection>
</connections>
</ui>
mainwindow.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1057</width>
<height>600</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<widget class="QGroupBox" name="createFactoryGroupBox">
<property name="geometry">
<rect>
<x>20</x>
<y>20</y>
<width>561</width>
<height>201</height>
</rect>
</property>
<property name="title">
<string>汽车制造商</string>
</property>
</widget>
<widget class="QGroupBox" name="createCarGroupBox">
<property name="geometry">
<rect>
<x>20</x>
<y>230</y>
<width>561</width>
<height>231</height>
</rect>
</property>
<property name="title">
<string>汽车</string>
</property>
</widget>
<widget class="QGroupBox" name="createDetailsGroupBox">
<property name="geometry">
<rect>
<x>600</x>
<y>20</y>
<width>441</width>
<height>441</height>
</rect>
</property>
<property name="title">
<string>详细信息</string>
</property>
</widget>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1057</width>
<height>26</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<resources/>
<connections/>
</ui>
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QGridLayout>
#include <QAbstractItemView>
#include <QHeaderView>
#include <QAction>
#include <QMenu>
#include <QMenuBar>
#include <QDialog>
MainWindow::MainWindow(const QString &factoryTable, const QString &carTable,
QFile *carDetails, QWidget *parent)
: QMainWindow(parent)
// , ui(new Ui::MainWindow)
{
// ui->setupUi(this);
file = carDetails;
readCarData();
carModel = new QSqlRelationalTableModel(this);
carModel->setTable(carTable);
carModel->setRelation(2,QSqlRelation(factoryTable,"id","manufactory"));
carModel->select();
factoryModel = new QSqlTableModel(this);
factoryModel->setTable(factoryTable);
factoryModel->select();
QGroupBox *factory = createFactoryGroupBox();
QGroupBox *cars = createCarGroupBox();
QGroupBox *details = createDetailsGroupBox();
// 布局
QGridLayout *layout = new QGridLayout;
layout->addWidget(factory,0,0);
layout->addWidget(cars,1,0);
layout->addWidget(details,0,1,2,1);
layout->setColumnStretch(1,1);
layout->setColumnMinimumWidth(0,500);
QWidget *widget = new QWidget;
widget->setLayout(layout);
setCentralWidget(widget);
createMenuBar();
resize(850,400);
setWindowTitle(tr("主从视图"));
}
MainWindow::~MainWindow()
{
// delete ui;
}
void MainWindow::addCar()
{
//
/*
Dialog *dialog = new QDialog(carModel, factoryModel,carData, file, this);
int accepted = dialog->exec();
if(accepted ==1 ){
int lastRow = carModel->rowCount()-1;
carView->selectRow(lastRow);
carView->scrollToBottom();
showCarDetails(carModel->index(lastRow,0));
}
*/
}
void MainWindow::changeFactory(QModelIndex index)
{
QSqlRecord record = factoryModel->record(index.row());
QString factoryId = record.value("id").toString();
carModel->setFilter("id = '"+ factoryId + "'");
showFactoryProfile(index);
}
void MainWindow::delCar()
{
QModelIndexList selection = carView->selectionModel()->selectedRows(0);
if(!selection.empty()){
QModelIndex idIndex = selection.at(0);
int id = idIndex.data().toInt();
QString name = idIndex.sibling(idIndex.row(),1).data().toString();
QString factory = idIndex.sibling(idIndex.row(),2).data().toString();
QMessageBox::StandardButton button;
button =QMessageBox::question(this, tr("删除汽车记录"),QString(tr("确认删除由'%1'生产的'%2'吗？").arg(factory).arg(name)),QMessageBox::Yes|QMessageBox::No);
if(button == QMessageBox::Yes){
removeCarFromFile(id);
removeCarFromDatabase(idIndex);
decreaseCarCount(indexOfFactory(factory));
}
else{
QMessageBox::information(this,tr("删除汽车记录"),tr("请选择要删除的记录"));
}
}
}
void MainWindow::showCarDetails(QModelIndex index)
{
QSqlRecord record = carModel->record(index.row());
QString factory = record.value("manufactory").toString();
QString name = record.value("name").toString();
QString year = record.value("year").toString();
QString carId = record.value("carid").toString();
showFactoryProfile(indexOfFactory(factory));
titleLabel->setText(tr("品牌：%1 (%2)").arg(name).arg(year));
titleLabel->show();
QDomNodeList cars = carData.elementsByTagName("car");
for (int i = 0; i<cars.count(); i++)
{
QDomNode car = cars.item(i);
if(car.toElement().attribute("id")==carId){
getAttribList(car.toElement());
break;
}
}
if( (!attribList->count()) == 0){
attribList->show();
}
}
void MainWindow::showFactoryProfile(QModelIndex index)
{
QSqlRecord record = factoryModel->record(index.row());
QString name = record.value("manufactory").toString();
int count = carModel->rowCount();
profileLabel->setText(tr("汽车制造商：%1\n产品数量：%2").arg(name).arg(count));
profileLabel->show();
titleLabel->hide();
attribList->hide();
}
QGroupBox *MainWindow::createFactoryGroupBox()
{
factoryView = new QTableView;
factoryView->setEditTriggers(QAbstractItemView::NoEditTriggers);
factoryView->setSortingEnabled(true);
factoryView->setSelectionBehavior(QAbstractItemView::SelectRows);
factoryView->setSelectionMode(QAbstractItemView::SingleSelection);
factoryView->setShowGrid(false);
factoryView->setAlternatingRowColors(true);
factoryView->setModel(factoryModel);
connect(factoryView, SIGNAL(clicked(QModelIndex)), this, SLOT(changeFactory(QModelIndex)));
QGroupBox *box = new QGroupBox(tr("汽车制造商"));
QGridLayout *layout = new QGridLayout;
layout->addWidget(factoryView,0,0);
box->setLayout(layout);
return box;
}
QGroupBox *MainWindow::createCarGroupBox()
{
//
QGroupBox *box = new QGroupBox(tr("汽车"));
carView = new QTableView;
carView->setEditTriggers(QAbstractItemView::NoEditTriggers);
carView->setSortingEnabled(true);
carView->setSelectionBehavior(QAbstractItemView::SelectRows);
carView->setSelectionMode(QAbstractItemView::SingleSelection);
carView->setShowGrid(false);
carView->verticalHeader()->hide();
carView->setAlternatingRowColors(true);
carView->setModel(carModel);
connect(carView, SIGNAL(clicked(QModelIndex)), this, SLOT(showCarDetails(QModelIndex)));
connect(carView, SIGNAL(activated(QModelIndex)), this, SLOT(showCarDetails(QModelIndex)));
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(carView,0,0);
box->setLayout(layout);
return box;
}
QGroupBox *MainWindow::createDetailsGroupBox()
{
//
QGroupBox *box = new QGroupBox(tr("详细信息"));
profileLabel = new QLabel;
profileLabel->setWordWrap(true);
profileLabel->setAlignment(Qt::AlignBottom);
titleLabel = new QLabel;
titleLabel->setWordWrap(true);
titleLabel->setAlignment(Qt::AlignBottom);
attribList = new QListWidget;
QGridLayout *layout = new QGridLayout;
layout->addWidget(profileLabel,0,0,1,2);
layout->addWidget(titleLabel,1,0,1,2);
layout->addWidget(attribList,2,0,1,2);
layout->setRowStretch(2,1);
box->setLayout(layout);
return box;
}
void MainWindow::createMenuBar()
{
// 菜单函数
QAction *addAction = new QAction(tr("添加"),this);
QAction *deleteAction = new QAction(tr("删除"),this);
QAction *quitAction = new QAction(tr("退出"),this);
addAction->setShortcut(tr("Ctrl+A"));
deleteAction->setShortcut(tr("Ctrl+D"));
quitAction->setShortcut(tr("Ctrl+Q"));
QMenu *fileMenu = menuBar()->addMenu(tr("操作菜单"));
fileMenu->addAction(addAction);
fileMenu->addAction(deleteAction);
fileMenu->addSeparator();
fileMenu->addAction(quitAction);
connect(addAction, SIGNAL(triggered(bool)), this, SLOT(addCar()));
connect(deleteAction, SIGNAL(triggered(bool)), this, SLOT(delCar()));
connect(quitAction, SIGNAL(triggered(bool)), this, SLOT(close()));
}
void MainWindow::decreaseCarCount(QModelIndex index)
{
int row = index.row();
int count = carModel->rowCount();
if(count == 0)
{
factoryModel->removeRow(row);
}
}
void MainWindow::getAttribList(QDomNode car)
{
attribList->clear();
QDomNodeList attribs = car.childNodes();
QDomNode node;
QString attribNumber;
for(int j = 0; j<attribs.count(); j++){
node = attribs.item(j);
attribNumber = node.toElement().attribute("number");
QListWidgetItem *item = new QListWidgetItem(attribList);
QString showText(attribNumber + ": " + node.toElement().text());
item->setText(tr("%1").arg(showText));
}
}
QModelIndex MainWindow::indexOfFactory(const QString &factory)
{
for(int i =0 ;i < factoryModel->rowCount(); i++){
QSqlRecord record = factoryModel->record(i);
if(record.value("manufactory")== factory)
return factoryModel->index(i,1);
}
return QModelIndex();
}
void MainWindow::readCarData()
{
if(!file->open(QIODevice::ReadOnly))
return;
if(!carData.setContent(file))
{
file->close();
return;
}
file->close();
}
void MainWindow::removeCarFromDatabase(QModelIndex index)
{
carModel->removeRow(index.row());
}
void MainWindow::removeCarFromFile(int id)
{
QDomNodeList cars = carData.elementsByTagName("car");
for(int i = 0; i<cars.count(); i++){
QDomNode node = cars.item(i);
if(node.toElement().attribute("id").toInt()==id){
carData.elementsByTagName("archive").item(0).removeChild(node);
break;
}
}
}
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QGroupBox>
#include <QTableView>
#include <QListWidget>
#include <QLabel>
#include <QFile>
#include <QSqlRelationalTableModel>
#include <QSqlTableModel>
#include <QDomNode>
#include <QDomDocument>
#include <QtSql/QSqlRecord>
#include <QMessageBox>
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(const QString &factoryTable, const QString &carTable,
QFile *carDetails, QWidget *parent = nullptr);
~MainWindow();
private:
QGroupBox *createCarGroupBox();
QGroupBox *createFactoryGroupBox();
QGroupBox *createDetailsGroupBox();
void createMenuBar();
QTableView *carView;
QTableView *factoryView;
QListWidget *attribList;
/* 声明相关的信息标签 **/
QLabel *profileLabel;
QLabel *titleLabel;
//
void decreaseCarCount(QModelIndex index); // 减少汽车数量
void getAttribList(QDomNode car);
QModelIndex indexOfFactory(const QString &factory);
void readCarData();
void removeCarFromDatabase(QModelIndex index);
void removeCarFromFile(int id);
QDomDocument carData;
QFile *file;
QSqlRelationalTableModel *carModel;
QSqlTableModel *factoryModel;
Ui::MainWindow *ui;
private slots:
void addCar();
void changeFactory(QModelIndex index);
void delCar();
void showCarDetails(QModelIndex index);
void showFactoryProfile(QModelIndex index);
};
#endif // MAINWINDOW_H
attribs.xml
<?xml version="1.0" encoding="utf-8"?>
<archive>
<car id="1">
<attrib number="01">排量：2393ml</attrib>
<attrib number="02">价格：43.26万元</attrib>
<attrib number="03">排放：欧4</attrib>
<attrib number="04">油耗：7.01(90km/h)</attrib>
<attrib number="05">功率：130/6000</attrib>
</car>
<car id="2">
<attrib number="01">排量：1600ml</attrib>
<attrib number="02">价格：8.98万元</attrib>
<attrib number="03">排放：欧3</attrib>
<attrib number="04">油耗：6.11(90km/h)</attrib>
<attrib number="05">功率：68/5800</attrib>
</car>
<car id="3">
<attrib number="01">排量：1600ml</attrib>
<attrib number="02">价格：11.25万元</attrib>
<attrib number="03">排放：欧3带OBD</attrib>
<attrib number="04">油耗：6.01(90km/h)</attrib>
<attrib number="05">功率：74/6000</attrib>
</car>
<car id="4">
<attrib number="01">排量：1997ml</attrib>
<attrib number="02">价格：15.38万元</attrib>
<attrib number="03">排放：欧3带OBD</attrib>
<attrib number="04">油耗：7.01(90km/h)</attrib>
<attrib number="05">功率：130/6000</attrib>
</car>
<car id="5">
<attrib number="01">排量：1600ml</attrib>
<attrib number="02">价格：6.58万元</attrib>
<attrib number="03">排放：欧3</attrib>
<attrib number="04">油耗：6.51(90km/h)</attrib>
<attrib number="05">功率：65/5600</attrib>
</car>
<car id="6">
<attrib number="01">排量：1997ml</attrib>
<attrib number="02">价格：16.08万元</attrib>
<attrib number="03">排放：欧4</attrib>
<attrib number="04">油耗：7.01(90km/h)</attrib>
<attrib number="05">功率：108/6000</attrib>
</car>
<car id="7">
<attrib number="01">排量：1781ml</attrib>
<attrib number="02">价格：7.98万元</attrib>
<attrib number="03">排放：欧3</attrib>
<attrib number="04">油耗：7.21(90km/h)</attrib>
<attrib number="05">功率：70/5200</attrib>
</car>
<car id="8">
<attrib number="01">排量：1984ml</attrib>
<attrib number="02">价格：19.58万元</attrib>
<attrib number="03">排放：欧4</attrib>
<attrib number="04">油耗：7.11(90km/h)</attrib>
<attrib number="05">功率：85/5400</attrib>
</car>
</archive>
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