以下是一个简单的示例代码,演示了如何使用Qt C++客户端采集智能家居状态信息,并将其存储到SQLite数据库中。然后,Linux C服务器从数据库中读取状态数据,并根据温度和湿度数据制定建议,并通过TCP/IP协议将建议发送给客户端。

Qt C++客户端代码(client.cpp):

#include <QtSql>
#include <QTcpSocket>
#include <QDataStream>

void storeStatusInfo(double temperature, double humidity)
{
    // 创建或打开SQLite数据库
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("smart_home.db");
    if (!db.open()) {
        qDebug() << "Failed to open database";
        return;
    }

    // 创建表(如果不存在)
    QSqlQuery query;
    query.exec("CREATE TABLE IF NOT EXISTS smart_home_status "
               "(id INTEGER PRIMARY KEY AUTOINCREMENT, "
               "temperature REAL, "
               "humidity REAL, "
               "timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP)");

    // 插入状态信息
    query.prepare("INSERT INTO smart_home_status (temperature, humidity) "
                  "VALUES (:temperature, :humidity)");
    query.bindValue(":temperature", temperature);
    query.bindValue(":humidity", humidity);
    if (!query.exec()) {
        qDebug() << "Failed to insert status info";
    }

    db.close();
}

int main()
{
    // 采集智能家居状态信息(示例:随机生成温度和湿度数据)
    double temperature = qrand() % 30;
    double humidity = qrand() % 100;

    // 存储状态信息到SQLite数据库
    storeStatusInfo(temperature, humidity);

    // 连接到Linux C服务器
    QTcpSocket socket;
    socket.connectToHost("server_ip_address", 1234); // 替换为服务器的IP地址和端口号
    if (!socket.waitForConnected()) {
        qDebug() << "Failed to connect to server";
        return 1;
    }

    // 发送状态信息给服务器
    QDataStream out(&socket);
    out << temperature << humidity;

    // 接收服务器的建议
    QDataStream in(&socket);
    QString advice;
    in >> advice;

    // 在GUI上显示建议
    // ...

    socket.disconnectFromHost();

    return 0;
}

Linux C服务器代码(server.c):

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>

void handleClient(int clientSocket)
{
    // 从客户端接收状态信息
    double temperature, humidity;
    if (recv(clientSocket, &temperature, sizeof(double), 0) == -1) {
        perror("Failed to receive temperature");
        close(clientSocket);
        return;
    }
    if (recv(clientSocket, &humidity, sizeof(double), 0) == -1) {
        perror("Failed to receive humidity");
        close(clientSocket);
        return;
    }

    // 根据状态信息制定建议
    char advice[256];
    if (temperature < 24) {
        sprintf(advice, "空调温度过低,建议提高温度至26℃");
    } else if (humidity < 40 || humidity > 70) {
        sprintf(advice, "加湿器湿度过高或过低,建议调整加湿器湿度");
    } else {
        sprintf(advice, "无建议");
    }

    // 发送建议给客户端
    if (send(clientSocket, advice, strlen(advice), 0) == -1) {
        perror("Failed to send advice");
        close(clientSocket);
        return;
    }

    close(clientSocket);
}

int main()
{
    int serverSocket, clientSocket;
    struct sockaddr_in serverAddr, clientAddr;
    socklen_t addrLen = sizeof(struct sockaddr_in);

    // 创建TCP套接字
    serverSocket = socket(AF_INET, SOCK_STREAM, 0);
    if (serverSocket == -1) {
        perror("Failed to create socket");
        return 1;
    }

    // 绑定服务器地址和端口
    serverAddr.sin_family = AF_INET;
    serverAddr.sin_addr.s_addr = INADDR_ANY;
    serverAddr.sin_port = htons(1234); // 使用与客户端相同的端口号
    if (bind(serverSocket, (struct sockaddr *)&serverAddr, sizeof(serverAddr)) == -1) {
        perror("Failed to bind");
        close(serverSocket);
        return 1;
    }

    // 监听连接
    if (listen(serverSocket, 5) == -1) {
        perror("Failed to listen");
        close(serverSocket);
        return 1;
    }

    printf("Server listening on port 1234...\n");

    // 接受连接并处理客户端请求
    while (1) {
        clientSocket = accept(serverSocket, (struct sockaddr *)&clientAddr, &addrLen);
        if (clientSocket == -1) {
            perror("Failed to accept");
            close(serverSocket);
            return 1;
        }

        printf("Client connected\n");

        handleClient(clientSocket);
    }

    close(serverSocket);

    return 0;
}

请注意,这只是一个简单的示例代码,可能需要根据实际需求进行修改和完善

代码:Qt C++客户端采集的智能家居状态信息存储SQlite智能家居状态表Linux C服务器根据智能家居状态表的温度、湿度数据制定建议并通过TCPIP协议发送建议给客户端建议例如温度低于24摄氏度、湿度小于40大于70时服务器将发送空调温度过低建议提高温度至26℃;加湿器湿度过高或过低建议调整加湿器湿度给客户端客户端显示在GUI上

原文地址: http://www.cveoy.top/t/topic/ivrr 著作权归作者所有。请勿转载和采集!

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