使用WOKWI 發送Line Message API 訊息到Line 上

使用WOKWI 發送Line Message API 訊息到Line 上

const char* LINE_CHANNEL_ACCESS_TOKEN = "P7aR4jd31q5usv1YjhlJaC9HGXwcq6G0YknpvDxOb356AnOGHt5MPpzXmJrxj5L9OY5Z70h1DSdKRGr2/6Q8cN0bVoh6PcUMISbfncKvnMmv2HG5GCR+HMgpPj2LQYqOLDKgDqUGchzrkgkrG1KhnhfnugdB04t89/1O/w1cDnyilFU=";

const char* LINE_USER_ID              = "U6a0f091afaaf21d4j1e21ace45205bfd3cf";

#include <WiFi.h>

#include <HTTPClient.h>

#include <ArduinoJson.h> // 用於乾淨地構建 JSON 請求體

// --- Line Message API 參數 (硬編碼) ---

const char* LINE_CHANNEL_ACCESS_TOKEN = "P7aR4jd31q5usv1YjhlJaC9HGXwcq6G0YknpvDxOb356AnOGHt5MPpzXmJrxj5L9OY5Z70h1DSdKRGr2/6Q8cN0bVoh6PcUMISbfncKvnMmv2HG5GCR+HMgpPj2LQYqOLDKgDqUGchzrkgkrG1KhnhfnugdB04t89/1O/w1cDnyilFU=";

const char* LINE_USER_ID              = "U6a0f091afaaf21d4j1e21ace45205bfd3cf";

const char* LINE_MESSAGE_CONTENT      = "Hello World ESP32"; // <-- 要發送的訊息內容

const char* LINE_API_ENDPOINT         = "https://api.line.me/v2/bot/message/push";

// --- Wokwi 模擬 Wi-Fi 憑證 ---

const char* WIFI_SSID     = "Wokwi-GUEST"; // Wokwi 模擬器專用 SSID

const char* WIFI_PASSWORD = "";           // Wokwi 模擬器專用密碼 (空字串)

// --- 輔助函數 ---

/**

 * @brief 連接 Wokwi 模擬 Wi-Fi

 */

void connectWiFi() {

    Serial.print("連線到 Wi-Fi: ");

    Serial.println(WIFI_SSID);

   

    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);

    int attempts = 0;

    while (WiFi.status() != WL_CONNECTED && attempts < 20) {

        delay(500);

        Serial.print(".");

        attempts++;

    }

    if (WiFi.status() == WL_CONNECTED) {

        Serial.println("\nWi-Fi 連線成功！ (Wokwi 模擬環境)");

        Serial.print("IP 位址: ");

        Serial.println(WiFi.localIP());

    } else {

        Serial.println("\nWi-Fi 連線失敗！ (請檢查 Wokwi 網路設定)");

    }

}

/**

 * @brief 向 Line Message API 發送推播訊息

 */

void sendLineMessage() {

    if (WiFi.status() != WL_CONNECTED) {

        Serial.println("Line 訊息發送失敗：Wi-Fi 未連線。");

        return;

    }

    HTTPClient http;

    // 開始 HTTP 連線

    http.begin(LINE_API_ENDPOINT);

   

    // 設定 HTTP 標頭

    http.addHeader("Content-Type", "application/json");

    // Line 要求的授權標頭

    String authHeader = String("Bearer ") + LINE_CHANNEL_ACCESS_TOKEN;

    http.addHeader("Authorization", authHeader);

    // 建立 JSON 請求體

    StaticJsonDocument<256> doc;

    doc["to"] = LINE_USER_ID;

    JsonArray messages = doc.createNestedArray("messages");

    JsonObject msg = messages.createNestedObject();

    msg["type"] = "text";

    msg["text"] = LINE_MESSAGE_CONTENT; // 使用硬編碼的訊息內容

    String requestBody;

    serializeJson(doc, requestBody);

    Serial.println("\n--- 正在發送 Line 訊息 ---");

    Serial.print("發送對象 ID: "); Serial.println(LINE_USER_ID);

    Serial.print("發送內容: "); Serial.println(LINE_MESSAGE_CONTENT);

    Serial.print("請求體: "); Serial.println(requestBody);

    // 發送 POST 請求

    int httpResponseCode = http.POST(requestBody);

    if (httpResponseCode > 0) {

        Serial.printf("[HTTP] POST... code: %d\n", httpResponseCode);

        if (httpResponseCode == HTTP_CODE_OK || httpResponseCode == HTTP_CODE_ACCEPTED) {

            Serial.println("Line 訊息發送成功！");

        } else {

            String payload = http.getString();

            Serial.println("Line 訊息發送失敗，伺服器回應錯誤。");

            Serial.print("錯誤詳情: "); Serial.println(payload);

        }

    } else {

        Serial.printf("[HTTP] POST... 失敗，錯誤碼: %s\n", http.errorToString(httpResponseCode).c_str());

    }

    http.end();

}

void setup() {

    Serial.begin(115200);

    delay(1000);

    Serial.println("--- Line Message Wokwi 測試啟動 ---");

   

    // 1. 連接 Wi-Fi

    connectWiFi();

    // 2. 發送 Line 訊息

    if (WiFi.status() == WL_CONNECTED) {

        sendLineMessage();

    }

   

    Serial.println("\n--- 程式執行結束 ---");

}

void loop() {

    // 程式只在 setup() 中執行一次訊息發送

    delay(1000);

}