{"id":1132,"date":"2022-03-14T11:02:09","date_gmt":"2022-03-14T03:02:09","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=1132"},"modified":"2022-03-14T11:02:09","modified_gmt":"2022-03-14T03:02:09","slug":"qt-qml%e4%b8%8bdbus%e7%9a%84%e4%bd%bf%e7%94%a8%e4%be%8b%e5%ad%90","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=1132","title":{"rendered":"QT qml\u4e0bDBus\u7684\u4f7f\u7528\u4f8b\u5b50"},"content":{"rendered":"

Linux\u4e2d\u4f7f\u7528DBus\u4f5c\u4e3a\u8fdb\u7a0b\u95f4\u901a\u4fe1\u662f\u6bd4\u8f83\u6709\u6548\u7684\u65b9\u5f0f\uff0c\u8fd9\u79cdRPC\u65b9\u5f0f\u8ddf\u961f\u5217\u6bd4\uff0c\u53ef\u4ee5\u7701\u53bb\u5904\u7406\u8fdb\u7a0b\u95f4\u540c\u6b65\u7684\u6b65\u9aa4\uff0cQT\u4e5f\u5df2\u7ecf\u652f\u6301\u57fa\u4e8eDBus\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff0c\u8fd9\u91cc\u4e3e\u4e2a\u4f8b\u5b50\u3002<\/p>\n

\u9996\u5148\u5b9a\u4e49\u4e00\u4e2a\u63a5\u53e3\u6587\u4ef6CallHelloItf.h\uff1a<\/strong><\/h3>\n
\n
#ifndef CALLHELLOITF_H<\/div>\n
#define CALLHELLOITF_H<\/div>\n
#include <QDebug><\/div>\n
#include <QObject><\/div>\n
class CallHelloItf :public QObject<\/div>\n
{<\/div>\n
\u00a0 \u00a0 Q_OBJECT<\/div>\n
\u00a0 \u00a0 Q_CLASSINFO(“D-Bus Interface”, “ckx.dbus.CallHello”) \/\/\u8fd9\u91ccCallHello\u5c31\u662f\u751f\u6210\u65f6\u7684Adaptor\u7c7b\u7684\u524d\u7f00<\/div>\n
public:<\/div>\n
\u00a0 \u00a0 CallHelloItf(){}<\/div>\n
\u00a0 \u00a0 ~CallHelloItf(){}<\/div>\n
Q_SIGNALS: \/\/\u4fe1\u53f7\u51fd\u6570\uff0c\u8fd9\u4e9b\u4fe1\u53f7\u8fde\u63a5\u5230Server\u5b9e\u9645\u5904\u7406\u51fd\u6570\u4e2d\u53bb\u3002<\/div>\n
\u00a0 \u00a0 void Sig_SayBey();<\/div>\n
\u00a0 \u00a0 void Sig_SayHello();<\/div>\n
\u00a0 \u00a0 void Sig_SayAbout(QString, QString &);<\/div>\n
public Q_SLOTS: \/\/\u69fd\u51fd\u6570\uff0c\u7531\u5ba2\u6237\u7aefproxy\u8c03\u7528<\/div>\n
\u00a0 \u00a0 void SayHello()<\/div>\n
\u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 qDebug() << “Hello D-Bus”;<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 emit Sig_SayHello(); \u00a0\/\/\u53d1\u9001\u4fe1\u53f7\u5230\u672c\u63a5\u53e3<\/div>\n
\u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 void SayBey()<\/div>\n
\u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 qDebug() << “Bey D-Bus”;<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 emit Sig_SayBey();<\/div>\n
\u00a0 \u00a0 }<\/div>\n
\u00a0 \u00a0 QString SayAbout(QString str)<\/div>\n
\u00a0 \u00a0 {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 qDebug() << “SayAbout D-Bus: str:”<<str;<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 QString rtnStr;<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 emit Sig_SayAbout(str, rtnStr);<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 return rtnStr;<\/div>\n
\u00a0 \u00a0 }<\/div>\n
};<\/div>\n
#endif \/\/ CALLHELLOITF_H<\/div>\n<\/div>\n

\u7136\u540e\u7528\u547d\u4ee4\u884c\u7531\u4e0a\u9762\u6587\u4ef6\u751f\u6210\u670d\u52a1\u7aef\u548c\u5ba2\u6237\u7aef\u4ee3\u7801\uff1a<\/strong><\/h3>\n
\n
\n
$ Qt\/Tools\/QtDesignStudio\/qt5_design_studio_reduced_version\/bin\/qdbuscpp2xml CallHelloItf.h -A -o CallHelloItf.xml<\/div>\n
$ Qt\/Tools\/QtDesignStudio\/qt5_design_studio_reduced_version\/bin\/qdbusxml2cpp CallHelloItf.xml -a CallHelloAdaptor<\/div>\n
$ Qt\/Tools\/QtDesignStudio\/qt5_design_studio_reduced_version\/bin\/qdbusxml2cpp CallHelloItf.xml -p CallHelloProxy<\/div>\n

\u670d\u52a1\u7aef\u4ee3\u7801\u7684\u6587\u4ef6\u540d\u4e3aCallHelloAdaptor.cpp\u3001CallHelloAdaptor.h\u3002<\/p><\/div>\n

\u5ba2\u6237\u7aef\u4ee3\u7801\u7684\u6587\u4ef6\u540d\u4e3aCallHelloProxy.cpp\u3001CallHelloProxy.h\u3002<\/div>\n
\u4e2d\u95f4\u8fc7\u6e21\u7684\u6587\u4ef6\u540d\u4e3aCallHelloItf.xml\u3002<\/div>\n
\u5177\u4f53\u7684\u5185\u5bb9\u4e0d\u8d34\u51fa\u6765\u4e86\uff0c\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u81ea\u5df1\u751f\u6210\u540e\u6253\u5f00\u770b\u770b\u3002<\/div>\n<\/div>\n
<\/div>\n

DBus\u670d\u52a1\u7aef\u9879\u76ee\uff1a<\/strong><\/h3>\n
\u7528QT quick\u65b9\u5f0f\u751f\u6210\u4e00\u4e2a\u65b0\u9879\u76ee\uff0c\u7136\u540e\u628a\u4e0a\u9762\u751f\u6210\u7684\u670d\u52a1\u5668\u4ee3\u7801CallHelloAdaptor.cpp\u3001CallHelloAdaptor.h\u4ee5\u53caCallHelloItf.h\u90fd\u52a0\u5165\u5230\u670d\u52a1\u7aef\u7684\u5de5\u7a0b\u91cc\u9762\u3002<\/div>\n
\u5728\u5de5\u7a0b\u7684pro\u6587\u4ef6\u4e2d\u52a0\u5165\u4e00\u884c\uff1a<\/div>\n
#DBus\u6240\u9700\u8981\u7684\u5e93
\nQT += dbus<\/div>\n
<\/div>\n
\u589e\u52a0\u4e00\u4e2aServer\u7c7b\uff0cserver.h\u6587\u4ef6\uff1a<\/strong><\/div>\n
\n
\n
#ifndef SERVER_H<\/div>\n
#define SERVER_H<\/div>\n
#include <QObject><\/div>\n
#include <QDebug><\/div>\n
class Server : public QObject<\/div>\n
{<\/div>\n
\u00a0 \u00a0 Q_OBJECT<\/div>\n
public:<\/div>\n
\u00a0 \u00a0 explicit Server(QObject *parent = nullptr);<\/div>\n
public Q_SLOTS: \/\/\u69fd\u51fd\u6570<\/div>\n
\u00a0 \u00a0 void SayHello();<\/div>\n
\u00a0 \u00a0 void SayBey();<\/div>\n
\u00a0 \u00a0 void SayAbout(QString str, QString &rtnStr);<\/div>\n
};<\/div>\n
#endif \/\/ SERVER_H<\/div>\n
<\/div>\n

server.cpp\u6587\u4ef6\uff1a<\/strong><\/div>\n

\n
\n
#include “server.h”<\/div>\n
Server::Server(QObject *parent)<\/div>\n
\u00a0 \u00a0 : QObject{parent}<\/div>\n
{<\/div>\n
}<\/div>\n
void Server::SayHello()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Server::SayHello”;<\/div>\n
}<\/div>\n
void Server::SayBey()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Server::SayBey”;<\/div>\n
}<\/div>\n
void Server::SayAbout(QString str, QString &rtnStr)<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Server::SayAbout: str:” << str;<\/div>\n
\u00a0 \u00a0 rtnStr = “Server::SayAbout from server: BBB”;<\/div>\n
}<\/div>\n<\/div>\n
main.cpp\u6587\u4ef6\u4e2d\u52a0\u5165\u51e0\u884c\uff1a<\/strong><\/div>\n<\/div>\n<\/div>\n
\n
\n
#include <QGuiApplication><\/div>\n
#include <QQmlApplicationEngine><\/div>\n
#include <QDBusConnection><\/div>\n
#include <QObject><\/div>\n
#include “DBus\/CallHelloItf.h”<\/div>\n
#include “DBus\/CallHelloAdaptor.h”<\/div>\n
#include “server.h”<\/div>\n
int main(int argc, char *argv[])<\/div>\n
{<\/div>\n
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)<\/div>\n
\u00a0 \u00a0 QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);<\/div>\n
#endif<\/div>\n
\u00a0 \u00a0 QGuiApplication app(argc, argv);<\/div>\n
\u00a0 \u00a0 QQmlApplicationEngine engine;<\/div>\n
\u00a0 \u00a0 const QUrl url(QStringLiteral(“qrc:\/main.qml”));<\/div>\n
\u00a0 \u00a0 QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&app, [url](QObject *obj, const QUrl &objUrl) {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 if (!obj && url == objUrl)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 QCoreApplication::exit(-1);<\/div>\n
\u00a0 \u00a0 }, Qt::QueuedConnection);<\/div>\n
\u00a0 \u00a0 engine.load(url);<\/div>\n
\u00a0 \u00a0 \/\/Dbus \u6f14\u793a\u4ee3\u7801<\/span><\/div>\n
\u00a0 \u00a0 CallHelloItf *m_pCallHelloItf = new CallHelloItf(); \/\/\u8981\u8bb0\u5f97delete<\/span><\/div>\n
\u00a0 \u00a0 CallHelloAdaptor *m_pCallHelloAdpator = new CallHelloAdaptor(m_pCallHelloItf); \/\/\u8981\u8bb0\u5f97delete<\/span><\/div>\n
\u00a0 \u00a0 QDBusConnection session = QDBusConnection::sessionBus();<\/span><\/div>\n
\u00a0 \u00a0 \/\/\u4f7f\u7528Tools\/QtDesignStudio\/qt5_design_studio_reduced_version\/bin\/qdbusviewer\u53ef\u4ee5\u67e5\u770b\u5230\u8be5Service\u540d\u5b57”ckx.dbus.CallHello”\u3002<\/span><\/div>\n
\u00a0 \u00a0 session.registerService(“ckx.dbus.CallHello”);<\/span><\/div>\n
\u00a0 \u00a0 session.registerObject(“\/”, m_pCallHelloItf);<\/span><\/div>\n
\u00a0 \u00a0 Server *server = new Server();<\/span><\/div>\n
\u00a0 \u00a0 \/\/\u4eceProxy\u5ba2\u6237\u7aef\u6536\u5230\u63a5\u53e3\u4fe1\u53f7\uff0c\u4ea4\u7531Server\u7684\u69fd\u51fd\u6570\u5904\u7406\uff1a<\/span><\/div>\n
\u00a0 \u00a0 QObject::connect(m_pCallHelloItf, SIGNAL(Sig_SayBey()), server, SLOT(SayBey()));<\/span><\/div>\n
\u00a0 \u00a0 QObject::connect(m_pCallHelloItf, SIGNAL(Sig_SayHello()), server, SLOT(SayHello()));<\/span><\/div>\n
\u00a0 \u00a0 QObject::connect(m_pCallHelloItf, SIGNAL(Sig_SayAbout(QString, QString &)), server, SLOT(SayAbout(QString, QString &)));<\/span><\/div>\n
\u00a0 \u00a0 return app.exec();<\/div>\n
}<\/div>\n<\/div>\n
\u8fd0\u884c\u5373\u53ef\u3002<\/div>\n<\/div>\n

\u7528qdbusviewer\u53ef\u4ee5\u67e5\u770b\u6ce8\u518c\u5230\u7cfb\u7edf\u4e2d\u7684DBus\u670d\u52a1\uff1a<\/strong><\/h3>\n
\u6ce8\u610f\uff1aDBus\u76ee\u524d\u5728win\u4e0a\u4e0d\u652f\u6301\uff0c\u8981\u5230linux\u4e0b\u6267\u884c\u4ee5\u4e0aserver\u4ee3\u7801\uff0c\u5e76\u4e14\u786e\u4fddlinux\u4e0a\u8fd0\u884c\u6709dbus-daemon\u8fd9\u4e2aDBus\u670d\u52a1\u8fdb\u7a0b\u3002<\/div>\n
$ sudo Qt\/Tools\/QtDesignStudio\/qt5_design_studio_reduced_version\/bin\/qdbusviewer<\/div>\n
\u4ece\u7a97\u53e3\u5de6\u4fa7\u53ef\u4ee5\u770b\u5230\u540d\u5b57\u4e3a\u201cckx.dbus.CallHello\u201d\u7684\u670d\u52a1\uff0c\u70b9\u51fb\u540e\u53f3\u4fa7\u53ef\u4ee5\u770b\u5230\u8be5\u670d\u52a1\u4e0b\u7684\u4fe1\u53f7\u548c\u65b9\u6cd5\u3002<\/span><\/span><\/div>\n
<\/div>\n

\u5ba2\u6237\u7aef\u5b9e\u73b0\uff1a<\/strong><\/h3>\n
\n
\u7528QT quick\u65b9\u5f0f\u751f\u6210\u4e00\u4e2a\u65b0\u9879\u76ee\uff0c\u7136\u540e\u628a\u4e0a\u9762\u751f\u6210\u7684\u5ba2\u6237\u7aef\u4ee3\u7801CallHelloProxy.cpp\u3001CallHelloProxy.h\u90fd\u52a0\u5165\u5230\u670d\u52a1\u7aef\u7684\u5de5\u7a0b\u91cc\u9762\u3002<\/div>\n
\u5728\u5de5\u7a0b\u7684pro\u6587\u4ef6\u4e2d\u52a0\u5165\u4e00\u884c\uff1a<\/div>\n
#DBus\u6240\u9700\u8981\u7684\u5e93
\nQT += dbus<\/div>\n<\/div>\n
<\/div>\n
\u52a0\u5165Client\u7c7b\uff0cclient.h\u6587\u4ef6\uff1a<\/strong><\/div>\n
\n
\n
#ifndef CLIENT_H<\/div>\n
#define CLIENT_H<\/div>\n
#include <QObject><\/div>\n
#include “DBus\/CallHelloProxy.h”<\/div>\n
class Client : public QObject<\/div>\n
{<\/div>\n
\u00a0 \u00a0 Q_OBJECT<\/div>\n
public:<\/div>\n
\u00a0 \u00a0 explicit Client(QObject *parent = nullptr);<\/div>\n
\u00a0 \u00a0 ~Client();<\/div>\n
public Q_SLOTS: \/\/\u69fd\u51fd\u6570,\u7531qml\u6765\u8c03\u7528<\/div>\n
\u00a0 \u00a0 void SayHello();<\/div>\n
\u00a0 \u00a0 void SayBey();<\/div>\n
\u00a0 \u00a0 void SayAbout();<\/div>\n
public:<\/div>\n
\u00a0 \u00a0 ckx::dbus::CallHello *m_pCkxDbusCallHello;<\/div>\n
};<\/div>\n
#endif \/\/ CLIENT_H<\/div>\n<\/div>\n
client.cpp\u6587\u4ef6\uff1a<\/strong><\/div>\n<\/div>\n
\n
\n
#include <QDebug><\/div>\n
#include “DBus\/CallHelloProxy.h”<\/div>\n
#include “client.h”<\/div>\n
Client::~Client()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 delete m_pCkxDbusCallHello;<\/span><\/div>\n
}<\/div>\n
Client::Client(QObject *parent)<\/div>\n
\u00a0 \u00a0 : QObject{parent}<\/div>\n
{<\/div>\n
\u00a0 \u00a0 m_pCkxDbusCallHello = new ckx::dbus::CallHello(“ckx.dbus.CallHello”, “\/”,<\/span><\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0QDBusConnection::sessionBus(), this);<\/span><\/div>\n
}<\/div>\n
void Client::SayHello()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Client::SayHello”;<\/div>\n
\u00a0 \u00a0 m_pCkxDbusCallHello ->SayHello();<\/span><\/div>\n
}<\/div>\n
void Client::SayBey()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Client::SayBey”;<\/div>\n
\u00a0 \u00a0 m_pCkxDbusCallHello ->SayBey();<\/span><\/div>\n
}<\/div>\n
void Client::SayAbout()<\/div>\n
{<\/div>\n
\u00a0 \u00a0 qDebug() << “Client::SayAbout”;<\/div>\n
\u00a0 \u00a0 QString strCont = “D-Bus from client: AAA”;<\/div>\n
\u00a0 \u00a0 QDBusPendingReply<QString> reply = m_pCkxDbusCallHello->SayAbout(strCont);<\/span><\/div>\n
\u00a0 \u00a0 reply.waitForFinished();<\/span><\/div>\n
\u00a0 \u00a0 qDebug() << reply.value();<\/span><\/div>\n
}<\/div>\n<\/div>\n
\u5728main.cpp\u4e2d\u589e\u52a0\u51e0\u884c\uff1a<\/strong><\/div>\n
\n
\n
#include <QGuiApplication><\/div>\n
#include <QQmlApplicationEngine><\/div>\n
#include <QQmlContext><\/div>\n
#include “DBus\/CallHelloProxy.h”<\/div>\n
#include “client.h”<\/div>\n
int main(int argc, char *argv[])<\/div>\n
{<\/div>\n
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)<\/div>\n
\u00a0 \u00a0 QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);<\/div>\n
#endif<\/div>\n
\u00a0 \u00a0 QGuiApplication app(argc, argv);<\/div>\n
\u00a0 \u00a0 QQmlApplicationEngine engine;<\/div>\n
\u00a0 \u00a0 Client *m_pClient = new Client(); \/\/new\u51fa\u6765\u7684\u5728\u5806\u4e2d\u5206\u914d\uff0c\u5c31\u4e0d\u4f1a\u88abqt\u63d0\u524d\u81ea\u52a8\u91ca\u653e\uff0c\u4f46\u662f\u5fc5\u987b\u81ea\u5df1\u91ca\u653e<\/span><\/div>\n
\u00a0 \u00a0 engine.rootContext()->setContextProperty(“CLIENT”, m_pClient);<\/span><\/div>\n
\u00a0 \u00a0 const QUrl url(QStringLiteral(“qrc:\/main.qml”));<\/div>\n
\u00a0 \u00a0 QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0&app, [url](QObject *obj, const QUrl &objUrl) {<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 if (!obj && url == objUrl)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 QCoreApplication::exit(-1);<\/div>\n
\u00a0 \u00a0 }, Qt::QueuedConnection);<\/div>\n
\u00a0 \u00a0 engine.load(url);<\/div>\n
\u00a0 \u00a0 return app.exec();<\/div>\n
}<\/div>\n<\/div>\n
\u5728main.qml\u4e2d\u589e\u52a0\u51e0\u4e2a\u6309\u94ae\uff1a<\/strong><\/div>\n<\/div>\n
\n

import QtQuick 2.15
\nimport QtQuick.Window 2.15
\nimport QtQuick.Controls 2.15<\/p>\n

Window {
\nwidth: 640
\nheight: 480
\nvisible: true
\ntitle: qsTr(“Hello World”)<\/p>\n

Row{
\nButton{
\nid: btnSayBey
\ntext: “SayBey”
\n}
\nButton{
\nid: btnSayHello
\ntext: “SayHello”
\n}
\nButton{
\nid: btnSayAbout
\ntext: “SayAbout”
\n}
\n}<\/p>\n

\/\/\u7ec4\u4ef6\u52a0\u8f7d\u5b8c\u6210\u6267\u884c
\nComponent.onCompleted: {
\n\/\/\u5173\u8054\u4fe1\u53f7\u4e0e\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u7684\u65b9\u5f0f\u540cQML\u4e2d\u7684\u7c7b\u578b
\n\/\/Qml\u5bf9\u8c61\u7684\u4fe1\u53f7\u5173\u8054\u5230Cpp\u7684\u69fd\u51fd\u6570
\n\u00a0 \u00a0 console.log(‘main: btnSayBey.onClicked.connect(CLIENT.SayBey)’);<\/span>
\n\u00a0 \u00a0 btnSayBey.onClicked.connect(CLIENT.SayBey);<\/span>
\n\u00a0 \u00a0 console.log(‘main: btnSayHello.onClicked.connect(CLIENT.SayHello)’);<\/span>
\n\u00a0 \u00a0 btnSayHello.onClicked.connect(CLIENT.SayHello);<\/span>
\n\u00a0 \u00a0 console.log(‘main: btnSayAbout.onClicked.connect(CLIENT.SayAbout)’);<\/span>
\n\u00a0 \u00a0 btnSayAbout.onClicked.connect(CLIENT.SayAbout);<\/span>
\n}
\n}<\/p>\n<\/div>\n<\/div>\n

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