修复了部分代码

app.pro.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 12.0.2, 2024-03-04T22:54:36. -->
+<!-- Written by QtCreator 12.0.2, 2024-03-05T11:27:57. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>

datamanager.cpp

@@ -93,6 +93,14 @@ void DataManager::pick_up(QString code)
     qDebug() << "发送取车信息" << data;
 }
 
+void DataManager::find_code()
+{
+    QByteArray data, data_encrypt;
+    data = protocol->data_maker(Protocol::CODE, QString("update"), _user, "unused");
+    data_encrypt = protocol->data_encrypt(data);
+    tcpclient->sendToserver(data_encrypt);
+    qDebug() << "发送更新code请求" << data;
+}
 
 void DataManager::recv_from_server(QByteArray data)
 {
@@ -127,6 +135,13 @@ void DataManager::recv_from_server(QByteArray data)
                 emit update_code(data);
 
             }
+            else if(action == "update")
+            {
+                //此处收到更新code码
+                data = json_data["data"].toString();
+                emit update_code(data);
+
+            }
 
         }
         else if (json_data["type"] == "online_users")

datamanager.h

@@ -52,6 +52,7 @@ public slots:
     void account_cancellation(QString username);
     void pick_up(QString code);
     void parking();
+    void find_code();
 
     /******TCPClient******/
     void TCPClientConnected();

login.cpp

@@ -87,6 +87,7 @@ void Login::signin_response(bool result)
         connect(datamanager,&DataManager::update_line,mainwidget,&Widget::update_line);
         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);
 
         this->hide();
         mainwidget->show();

widget.cpp

@@ -8,10 +8,11 @@ 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);
-    mqtt_client->setHostname(QHostAddress(QHostAddress::LocalHost).toString());
+    mqtt_client->setHostname(hostname);
     mqtt_client->setPort(port);
     mqtt_client->setClientId("mobile");
     mqtt_client->setUsername("Phone");
@@ -52,6 +53,8 @@ void Widget::on_pushButton_3_clicked()
 void Widget::on_pushButton_4_clicked()
 {
     emit pick_up(ui->code->toPlainText());
+    ui->code->clear();
+    ui->pushButton_3->setEnabled(true);
 }
 
 void Widget::connected_handler()
@@ -138,9 +141,24 @@ void Widget::disconnect_form_server()
 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)
 {
-    ui->code->setText(code);
+    if(code == "000")
+    {
+        ui->pushButton_3->setEnabled(true);
     }
+    else
+    {
+        ui->code->setText(code);
+        ui->pushButton_3->setEnabled(false);
+    }
+}
+
+void Widget::on_pushButton_5_clicked()
+{
+    emit find_code();
+}
+

widget.h

@@ -32,6 +32,7 @@ signals:
     void exit_client();
     void parking();
     void pick_up(QString code);
+    void find_code();
 
 public slots:
     void on_pushButton_3_clicked();
@@ -44,10 +45,14 @@ public slots:
 
     void update_code(QString code);
 
+private slots:
+    void on_pushButton_5_clicked();
+
 private:
     Ui::Widget *ui;
     QMqttClient *mqtt_client;
     QMqttSubscription* sub = nullptr;
+    QString hostname = "mqtt.ourdocs.cn";
     QString topic = "/car";
     quint16 port = 1883;
 };

widget.ui

@@ -46,7 +46,7 @@
       <rect>
        <x>50</x>
        <y>150</y>
-       <width>311</width>
+       <width>171</width>
        <height>71</height>
       </rect>
      </property>
@@ -56,7 +56,7 @@
       </font>
      </property>
      <property name="text">
-      <string>放置驱车码</string>
+      <string>放置取车码</string>
      </property>
     </widget>
     <widget class="QPushButton" name="pushButton_3">
@@ -95,6 +95,19 @@
       </rect>
      </property>
     </widget>
+    <widget class="QPushButton" name="pushButton_5">
+     <property name="geometry">
+      <rect>
+       <x>270</x>
+       <y>170</y>
+       <width>93</width>
+       <height>28</height>
+      </rect>
+     </property>
+     <property name="text">
+      <string>查看取车码</string>
+     </property>
+    </widget>
    </widget>
    <widget class="QWidget" name="page_2">
     <widget class="QLabel" name="label_3">