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
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
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!