Question

我正在使用ESP8266模块。我已经成功创建了一个草图，它将HTTP请求发送到我的本地服务器。服务器发送响应，但是，我无法在Arduino IDE的串行监视器中显示它。我在互联网上找不到任何地方，如何显示收到的消息。我唯一能够显示的是整个GET请求。

甚至可以从服务器获取，解析和显示响应吗？如果是这样，任何人都可以提供代码示例吗？

Answer 1

        HTTPClient http;

        USE_SERIAL.print("[HTTP] begin...\n");
        // configure traged server and url
        //http.begin("https://192.168.1.12/test.html", "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38"); //HTTPS
        http.begin("http://192.168.1.12/test.html"); //HTTP

        USE_SERIAL.print("[HTTP] GET...\n");
        // start connection and send HTTP header
        int httpCode = http.GET();

        // httpCode will be negative on error
        if(httpCode) {
            // HTTP header has been send and Server response header has been handled
            USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

            // file found at server
            if(httpCode == HTTP_CODE_OK) {
                String payload = http.getString();
                // print only part of the string
                USE_SERIAL.println(payload.substring(0,200));
            }
        } else {
            USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
        }

        http.end();

这对你有用吗？关键是：payload.substring（0,200）

HTH

ESP8266显示器收到http响应

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