mqtt订阅和发布到服务器成功，订阅端可以将数据解析并存入数据库

cgi-bin/Makefile

@@ -4,20 +4,31 @@ MQTT_CFLAGS = -lmosquitto -lpthread -ldl
 MQTT_CFLAGS += -I./includes
 MQTT_CFLAGS += -L./mqtt_libs
 
-SQLITE3_CFLAGS = -lpthread -ldl -lcjson
+SQLITE3_CFLAGS = -lpthread -ldl
 SQLITE3_CFLAGS += -I./includes
 
+CJSON_CFLAGS = -lcjson
+
 
 all:
 
+
 sqlite_cgi_base:
-	$(cc) sqlite3.c sqlite_cgi_base.c -o sqlite_cgi_base.cgi $(SQLITE3_CFLAGS)
+	$(cc) sqlite3.c sqlite_cgi_base.c -o sqlite_cgi_base.cgi $(SQLITE3_CFLAGS) $(CJSON_CFLAGS)
 
 sqlite_cgi_insert_base:
-	$(cc) sqlite3.c sqlite_cgi_insert_base.c -o sqlite_cgi_insert_base.cgi $(SQLITE3_CFLAGS)
+	$(cc) sqlite3.c sqlite_cgi_insert_base.c -o sqlite_cgi_insert_base.cgi $(SQLITE3_CFLAGS) $(CJSON_CFLAGS)
 
 mqtt_sub_ctos:
-	$(cc) mqtt_sub_ctos.c -o mqtt_sub_ctos.cgi $(MQTT_CFLAGS)
+	$(cc) sqlite3.c mqtt_sub_ctos.c -o mqtt_sub_ctos.cgi $(MQTT_CFLAGS) $(CJSON_CFLAGS) $(SQLITE3_CFLAGS)
+
+mqtt_pub_stoc:
+	$(cc) mqtt_pub_stoc.c -o mqtt_pub_stoc.cgi $(MQTT_CFLAGS)
+
+
+mqtt:
+	$(cc) sqlite3.c mqtt_sub_ctos.c -o mqtt_sub_ctos.cgi $(MQTT_CFLAGS) $(CJSON_CFLAGS) $(SQLITE3_CFLAGS)
+	$(cc) mqtt_pub_stoc.c -o mqtt_pub_stoc.cgi $(MQTT_CFLAGS)
 
 clean:
 	rm -rf *.cgi

cgi-bin/mqtt_pub_stoc.c

@@ -0,0 +1,48 @@
+#include "includes/mosquitto.h" // mqtt
+#include "includes/sqlite3.h"   // sqlite3
+#include <stdbool.h>            // bool
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int isConnected = 0;
+
+void connect_callback(struct mosquitto *mosq, void *obj, int rc)
+{
+    if (rc == 0)
+    {
+        printf("---连接服务器成功---\n");
+        isConnected = 1;
+    }
+}
+int main(int argc, char const *argv[])
+{
+    if (argc < 3)
+    {
+        printf("format: %s msgid topic msg", argv[0]);
+        return -1;
+    }
+    mosquitto_lib_init();                                       // 初始化（固定格式）
+    struct mosquitto *client = mosquitto_new(NULL, true, NULL); // 创建客户端
+    mosquitto_connect_callback_set(client, connect_callback);   // 设置连接回调函数
+    // mosquitto_connect(client, "localhost", 1883, 60);         // 连接服务器(地址，端口，超时时间)
+    mosquitto_connect(client, "flykhan.com", 1883, 60);         // 连接服务器(地址，端口，超时时间)
+    mosquitto_loop_start(client);                               // 开启客户端线程
+    while (isConnected == 0)
+        ; // 等待连接成功(当连接成功后，isConnected会被置为1，然后跳出循环)
+
+    int msg_id = atoi(argv[1]);                                                      // 消息ID
+    char *topic = (char *)argv[2];                                                   // 主题
+    char *msg = (char *)argv[3];                                                     // 消息
+    int flag = mosquitto_publish(client, &msg_id, topic, strlen(msg), msg, 1, true); // 发布消息
+
+    // 发布成功
+    if (flag == MOSQ_ERR_SUCCESS)
+    {
+        printf("---消息发布成功: %s(%d):%s---\n", topic, msg_id, msg);
+        mosquitto_destroy(client);
+        mosquitto_lib_cleanup();
+    }
+
+    return 0;
+}

cgi-bin/mqtt_sub_ctos.c

@@ -15,6 +15,7 @@
 #include <unistd.h>
 #include <cjson/cJSON.h>      // cJSON 的头文件
 #include "includes/sqlite3.h" // sqlite3 的头文件
+#include <time.h>             // time_t 用于获取系统时间
 
 struct mosquitto *client; // mosquitto 客户端
 int isRunning = 1;        // 线程运行标志
@@ -51,11 +52,74 @@ void on_message(struct mosquitto *mosq,
 {
     printf("收到%s(%d)的消息: %s\n", message->topic, message->mid,
            (char *)message->payload);
-    if (strncmp((char *)message->payload, "exit", 4) == 0)
+    // if (strncmp((char *)message->payload, "exit", 4) == 0)
+    // {
+    //     isRunning = 0;
+    //     mosquitto_loop_stop(client, true);
+    // }
+
+    // 解析 JSON 数据
+    cJSON *root_json = cJSON_Parse((char *)message->payload);
+    if (root_json == NULL)
     {
-        isRunning = 0;
+        printf("JSON 数据解析失败!\n");
-        mosquitto_loop_stop(client, true);
+        return;
     }
+    // 获取 JSON 数据中的各个字段
+    // cJSON *id = cJSON_GetObjectItem(root_json, "id");
+    cJSON *temperature = cJSON_GetObjectItem(root_json, "temperature");
+    cJSON *humidity = cJSON_GetObjectItem(root_json, "humidity");
+
+    // 拿出字段的值
+    double temperature_value = temperature->valuedouble;
+    double humidity_value = humidity->valuedouble;
+
+    // // 获取当前日期和时间
+    // time_t current_time;
+    // time(&current_time);
+
+    // // 将时间转换为本地时间
+    // struct tm *localtime = localetime(&current_time);
+
+
+
+    printf("温度: %.2lf, 湿度: %.2lf\n", temperature_value, humidity_value);
+
+    // 打开数据库
+    sqlite3 *db = NULL;                                        // 数据库连接句柄
+    int ret = sqlite3_open("../sql_base/green_house.db", &db); // 打开数据库
+    if (ret != SQLITE_OK)
+    {
+        printf("数据库打开失败!\n");
+        return;
+    }
+
+    // 构建插入语句
+    char insert_sql[128] = "";
+    sprintf(insert_sql,
+            "insert into temp_hum_info (temperature,humidity) values(%.2lf,%.2lf);",
+            temperature_value, humidity_value); // 构建插入语句
+    printf("insert_sql is %s\n", insert_sql);
+
+    // 执行插入语句
+    char *errmsg = NULL;
+    ret = sqlite3_exec(db, insert_sql, NULL, NULL, &errmsg);
+
+    if (ret != SQLITE_OK)
+    {
+        printf("插入数据失败!\n");
+        return;
+    }
+    else
+    {
+        printf("插入数据成功!\n");
+    }
+
+    // 关闭数据库
+    sqlite3_close(db);
+
+    // 释放 cJSON_Parse() 分配的内存
+    cJSON_Delete(root_json);
 }
 int main(int argc, char const *argv[])
 {
@@ -86,7 +150,8 @@ int main(int argc, char const *argv[])
     mosquitto_message_callback_set(client, on_message);       // 设置接收消息回调函数，用于接收到消息后的处理
 
     // 3. 连接mqtt broker
-    int flag = mosquitto_connect(client, "flykhan.com", 1883, 60);
+    // int flag = mosquitto_connect(client, "localhost", 1883, 60);
+    int flag = mosquitto_connect(client, "flykhan.com", 1883, 60*60*24*30); // 连接服务器(地址，端口，超时时间) : 超时时间为一个月  
     if (flag == MOSQ_ERR_SUCCESS)
     {
         printf("-----连接MQTT 服务器成功！-----\n");
@@ -108,7 +173,7 @@ int main(int argc, char const *argv[])
     {
         // 处理网络事件
         mosquitto_loop_start(client); // 接收网络数据
-        // usleep(500);
+        usleep(500);
     }
 
     // 关闭mosquitto的客户端