优化了部分代码

app.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 12.0.2, 2024-03-05T11:27:57. -->
+<!-- Written by QtCreator 12.0.2, 2024-03-05T18:00:21. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

datamanager.cpp

@@ -102,6 +102,15 @@ void DataManager::find_code()
     qDebug() << "发送更新code请求" << data;
 }
 
+void DataManager::update_count()
+{
+    QByteArray data, data_encrypt;
+    data = protocol->data_maker(Protocol::MESSAGE, QString("count"), "unused");
+    data_encrypt = protocol->data_encrypt(data);
+    tcpclient->sendToserver(data_encrypt);
+    qDebug() << "发送获取人数请求" << data;
+}
+
 void DataManager::recv_from_server(QByteArray data)
 {
     QByteArray data_decrypt;
@@ -112,8 +121,14 @@ void DataManager::recv_from_server(QByteArray data)
         QJsonDocument json_data = QJsonDocument::fromJson(list[i]);
         if (json_data["type"] == "message")
         {
-            emit new_message();
+            QString data, action;
-            //暂时没用
+            action = json_data["action"].toString();
+            if(action == "count")
+            {
+                data = json_data["data"].toString();
+                emit handle_count(data);
+            }
+
         }
         if(json_data["type"] == "code")
         {
@@ -134,6 +149,7 @@ void DataManager::recv_from_server(QByteArray data)
                 data = json_data["data"].toString();
                 emit update_code(data);
 
+
             }
             else if(action == "update")
             {

datamanager.h

@@ -36,6 +36,7 @@ signals:
     void update_file(QString sendname,QString filename,QString file_data);
     void update_file_private(QString sendname,QString filename,QString file_data);
     void update_users(int count,QList<QString>online_users);
+    void handle_count(QString count);
 
 
 public slots:
@@ -53,6 +54,7 @@ public slots:
     void pick_up(QString code);
     void parking();
     void find_code();
+    void update_count();
 
     /******TCPClient******/
     void TCPClientConnected();

login.cpp

@@ -15,6 +15,7 @@ Login::Login(QWidget *parent) :
 
     /********datamanager********/
     datamanager = DataManager::getInstance();
+
     connect(datamanager,&DataManager::signin_response,this,&Login::signin_response);
     connect(datamanager,&DataManager::signup_response,this,&Login::signup_response);
     connect(datamanager,&DataManager::connect_to_server,this,&Login::connected);
@@ -22,7 +23,6 @@ Login::Login(QWidget *parent) :
     connect(this,&Login::signin_request,datamanager,&DataManager::signin_request);
     connect(this,&Login::Register,datamanager,&DataManager::Register);
 
-
 }
 
 Login::~Login()
@@ -85,9 +85,12 @@ void Login::signin_response(bool result)
         connect(mainwidget,&Widget::exit_client,this,&Login::exit_client);
         connect(datamanager,&DataManager::update_code,mainwidget,&Widget::update_code);
         connect(datamanager,&DataManager::update_line,mainwidget,&Widget::update_line);
+        connect(datamanager,&DataManager::handle_count,mainwidget,&Widget::handle_count);
+
         connect(mainwidget, &Widget::parking, datamanager, &DataManager::parking);
         connect(mainwidget, &Widget::pick_up, datamanager, &DataManager::pick_up);
         connect(mainwidget, &Widget::find_code, datamanager, &DataManager::find_code);
+        connect(mainwidget, &Widget::update_count, datamanager, &DataManager::update_count);
 
         this->hide();
         mainwidget->show();
@@ -145,7 +148,6 @@ void Login::exit_client()
     this->close();
 }
 
-
 /*****************************Others******************************/
 void Login::zoom_down(QPushButton* btn)
 {

login.h

@@ -47,6 +47,7 @@ private slots:
     void disconnected();
     void exit_client();
 
+
 private:
     Ui::Login *ui;
     QPoint point;

login.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>438</width>
+    <width>399</width>
-    <height>609</height>
+    <height>682</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -16,8 +16,8 @@
   <widget class="QPushButton" name="btn_signup">
    <property name="geometry">
     <rect>
-     <x>250</x>
+     <x>230</x>
-     <y>370</y>
+     <y>360</y>
      <width>79</width>
      <height>40</height>
     </rect>
@@ -49,8 +49,8 @@ QPushButton:pressed
   <widget class="QLineEdit" name="lineEdit_username">
    <property name="geometry">
     <rect>
-     <x>70</x>
+     <x>50</x>
-     <y>230</y>
+     <y>220</y>
      <width>289</width>
      <height>45</height>
     </rect>
@@ -74,8 +74,8 @@ font: 12pt &quot;Candara&quot;;</string>
   <widget class="QLabel" name="label_2">
    <property name="geometry">
     <rect>
-     <x>120</x>
+     <x>100</x>
-     <y>160</y>
+     <y>150</y>
      <width>191</width>
      <height>51</height>
     </rect>
@@ -91,8 +91,8 @@ background:transparent;</string>
   <widget class="QPushButton" name="btn_signin">
    <property name="geometry">
     <rect>
-     <x>100</x>
+     <x>80</x>
-     <y>370</y>
+     <y>360</y>
      <width>71</width>
      <height>40</height>
     </rect>
@@ -124,8 +124,8 @@ QPushButton:pressed
   <widget class="QLineEdit" name="lineEdit_password">
    <property name="geometry">
     <rect>
-     <x>70</x>
+     <x>50</x>
-     <y>290</y>
+     <y>280</y>
      <width>289</width>
      <height>45</height>
     </rect>

protocol.cpp

@@ -27,7 +27,7 @@ QByteArray Protocol::data_builder(QList<any_types> &args)
     case MESSAGE:
     {
         data.insert("type","message");
-        data.insert("sendname",args[1].get_string());
+        data.insert("action",args[1].get_string());
         data.insert("data",args[2].get_string());
         break;
     }

signup.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>438</width>
+    <width>399</width>
-    <height>609</height>
+    <height>682</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -16,7 +16,7 @@
   <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
-     <x>80</x>
+     <x>50</x>
      <y>90</y>
      <width>161</width>
      <height>31</height>
@@ -32,10 +32,10 @@
   <widget class="QWidget" name="layoutWidget">
    <property name="geometry">
     <rect>
-     <x>80</x>
+     <x>50</x>
      <y>190</y>
-     <width>271</width>
+     <width>301</width>
-     <height>344</height>
+     <height>391</height>
     </rect>
    </property>
    <layout class="QVBoxLayout" name="verticalLayout_3">
@@ -179,7 +179,7 @@ font: 26 10pt &quot;Bahnschrift Light&quot;;</string>
   <widget class="QLabel" name="label_2">
    <property name="geometry">
     <rect>
-     <x>80</x>
+     <x>50</x>
      <y>120</y>
      <width>301</width>
      <height>51</height>

widget.cpp

@@ -8,7 +8,7 @@ Widget::Widget(QWidget *parent)
 {
     ui->setupUi(this);
     ui->log->setEnabled(false);
-    ui->pushButton_3->setEnabled(false);
+
 
     //连接mqtt服务器，端口1883
     mqtt_client = new QMqttClient(this);
@@ -52,6 +52,10 @@ void Widget::on_pushButton_3_clicked()
 //点击取车按钮
 void Widget::on_pushButton_4_clicked()
 {
+    if(ui->code->toPlainText().isEmpty())
+    {
+        QMessageBox::information(this,"取车错误","请先放置正确的取车码！");
+    }
     emit pick_up(ui->code->toPlainText());
     ui->code->clear();
     ui->pushButton_3->setEnabled(true);
@@ -142,13 +146,27 @@ void Widget::update_line(QString data)
 {
     //向mqtt服务器发送路径消息
     qDebug() << "向mqtt服务器发送的路径消息" << data;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 }
 
 void Widget::update_code(QString code)
 {
     if(code == "000")
     {
-        ui->pushButton_3->setEnabled(true);
+        QMessageBox::information(this,"消息","当前用户并无存车信息");
     }
     else
     {
@@ -157,8 +175,38 @@ void Widget::update_code(QString code)
     }
 }
 
+void Widget::handle_count(QString count)
+{
+    QString data = QString("当前剩余空位'%1'").arg(count);
+    ui->label_4->setText(data);
+    if(count.toInt() == 0)
+    {
+        ui->pushButton_3->setEnabled(false);
+    }
+    else
+    {
+        ui->pushButton_3->setEnabled(true);
+    }
+}
+
 void Widget::on_pushButton_5_clicked()
 {
     emit find_code();
+    if(!ui->code->document()->isEmpty())
+    {
+        QMessageBox::information(this,"消息","已显示当前车位信息！");
+    }
+}
+
+
+void Widget::on_pushButton_6_clicked()
+{
+    emit update_count();
+}
+
+
+void Widget::on_pushButton_7_clicked()
+{
+    ui->stackedWidget->setCurrentIndex(0);
 }
 

widget.h

@@ -33,6 +33,7 @@ signals:
     void parking();
     void pick_up(QString code);
     void find_code();
+    void update_count();
 
 public slots:
     void on_pushButton_3_clicked();
@@ -45,9 +46,15 @@ public slots:
 
     void update_code(QString code);
 
+    void handle_count(QString count);
+
 private slots:
     void on_pushButton_5_clicked();
 
+    void on_pushButton_6_clicked();
+
+    void on_pushButton_7_clicked();
+
 private:
     Ui::Widget *ui;
     QMqttClient *mqtt_client;

widget.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>489</width>
+    <width>399</width>
-    <height>718</height>
+    <height>682</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -18,8 +18,8 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>501</width>
+     <width>399</width>
-     <height>661</height>
+     <height>682</height>
     </rect>
    </property>
    <widget class="QWidget" name="page">
@@ -27,8 +27,8 @@
      <property name="geometry">
       <rect>
        <x>40</x>
-       <y>50</y>
+       <y>40</y>
-       <width>251</width>
+       <width>371</width>
        <height>71</height>
       </rect>
      </property>
@@ -41,15 +41,69 @@
       <string>欢迎来到停车场</string>
      </property>
     </widget>
-    <widget class="QLabel" name="label_2">
+    <widget class="QTextEdit" name="code">
      <property name="geometry">
       <rect>
-       <x>50</x>
+       <x>40</x>
-       <y>150</y>
+       <y>360</y>
-       <width>171</width>
+       <width>321</width>
-       <height>71</height>
+       <height>41</height>
       </rect>
      </property>
+     <property name="html">
+      <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
+&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;meta charset=&quot;utf-8&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
+p, li { white-space: pre-wrap; }
+hr { height: 1px; border-width: 0; }
+li.unchecked::marker { content: &quot;\2610&quot;; }
+li.checked::marker { content: &quot;\2612&quot;; }
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Microsoft YaHei UI'; font-size:9pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:15pt;&quot;&gt;&lt;br /&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+     </property>
+    </widget>
+    <widget class="QWidget" name="horizontalLayoutWidget">
+     <property name="geometry">
+      <rect>
+       <x>40</x>
+       <y>130</y>
+       <width>321</width>
+       <height>111</height>
+      </rect>
+     </property>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <item>
+       <widget class="QLabel" name="label_4">
+        <property name="font">
+         <font>
+          <pointsize>15</pointsize>
+         </font>
+        </property>
+        <property name="text">
+         <string>当前车位数量</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton_6">
+        <property name="text">
+         <string>获取车位数量</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+    <widget class="QWidget" name="horizontalLayoutWidget_2">
+     <property name="geometry">
+      <rect>
+       <x>40</x>
+       <y>240</y>
+       <width>321</width>
+       <height>101</height>
+      </rect>
+     </property>
+     <layout class="QHBoxLayout" name="horizontalLayout_2">
+      <item>
+       <widget class="QLabel" name="label_2">
         <property name="font">
          <font>
           <pointsize>15</pointsize>
@@ -59,62 +113,75 @@
          <string>放置取车码</string>
         </property>
        </widget>
-    <widget class="QPushButton" name="pushButton_3">
+      </item>
-     <property name="geometry">
+      <item>
-      <rect>
+       <widget class="QPushButton" name="pushButton_5">
-       <x>90</x>
-       <y>390</y>
-       <width>93</width>
-       <height>28</height>
-      </rect>
-     </property>
         <property name="text">
-      <string>存车</string>
+         <string>查看取车码</string>
         </property>
        </widget>
-    <widget class="QPushButton" name="pushButton_4">
+      </item>
+     </layout>
+    </widget>
+    <widget class="QWidget" name="horizontalLayoutWidget_3">
      <property name="geometry">
       <rect>
-       <x>280</x>
+       <x>40</x>
-       <y>390</y>
+       <y>400</y>
-       <width>93</width>
+       <width>321</width>
-       <height>28</height>
+       <height>80</height>
       </rect>
      </property>
+     <layout class="QHBoxLayout" name="horizontalLayout_3">
+      <item>
+       <widget class="QPushButton" name="pushButton_4">
         <property name="text">
          <string>取车</string>
         </property>
        </widget>
-    <widget class="QTextEdit" name="code">
+      </item>
-     <property name="geometry">
+      <item>
-      <rect>
+       <widget class="QPushButton" name="pushButton_3">
-       <x>90</x>
+        <property name="text">
-       <y>266</y>
+         <string>存车</string>
-       <width>281</width>
-       <height>51</height>
-      </rect>
         </property>
        </widget>
-    <widget class="QPushButton" name="pushButton_5">
+      </item>
+     </layout>
+    </widget>
+    <widget class="QWidget" name="horizontalLayoutWidget_4">
      <property name="geometry">
       <rect>
-       <x>270</x>
+       <x>40</x>
-       <y>170</y>
+       <y>490</y>
-       <width>93</width>
+       <width>321</width>
-       <height>28</height>
+       <height>91</height>
       </rect>
      </property>
+     <layout class="QHBoxLayout" name="horizontalLayout_4">
+      <item>
+       <widget class="QPushButton" name="pushButton_2">
         <property name="text">
-      <string>查看取车码</string>
+         <string>用户</string>
         </property>
        </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="pushButton">
+        <property name="text">
+         <string>主页</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
    </widget>
    <widget class="QWidget" name="page_2">
     <widget class="QLabel" name="label_3">
      <property name="geometry">
       <rect>
-       <x>60</x>
+       <x>40</x>
-       <y>60</y>
+       <y>70</y>
        <width>241</width>
        <height>31</height>
       </rect>
@@ -131,40 +198,27 @@
     <widget class="QTextBrowser" name="log">
      <property name="geometry">
       <rect>
-       <x>60</x>
+       <x>50</x>
        <y>140</y>
-       <width>341</width>
+       <width>301</width>
-       <height>381</height>
+       <height>431</height>
       </rect>
      </property>
     </widget>
-   </widget>
+    <widget class="QPushButton" name="pushButton_7">
-  </widget>
-  <widget class="QPushButton" name="pushButton">
      <property name="geometry">
       <rect>
        <x>70</x>
-     <y>660</y>
+       <y>590</y>
-     <width>93</width>
+       <width>251</width>
-     <height>28</height>
+       <height>41</height>
       </rect>
      </property>
      <property name="text">
-    <string>主页</string>
+      <string>返回</string>
      </property>
     </widget>
-  <widget class="QPushButton" name="pushButton_2">
+   </widget>
-   <property name="geometry">
-    <rect>
-     <x>310</x>
-     <y>660</y>
-     <width>93</width>
-     <height>28</height>
-    </rect>
-   </property>
-   <property name="text">
-    <string>用户</string>
-   </property>
   </widget>
  </widget>
  <resources/>