Nodemcu 不响应 http GET 请求

Question

我想从我的 nodemcu 向本地主机服务器发送 HTTP GET 请求。nodemcu 和我的笔记本电脑都连接到同一个 Wifi 网络。虽然 nodemcu 连接到网络，但它不会发送请求。我尝试手动发送请求并使用“邮递员”，然后就可以了。所以我认为问题出在 nodemcu 代码或设备上。欢迎任何想法。

#include <ESP8266WiFi.h>

#include <WiFiClient.h> 

#include <ESP8266WebServer.h>

#include <ESP8266HTTPClient.h>

/* Set these to your desired credentials. */

const char *ssid = "******";  //ENTER YOUR WIFI SETTINGS

const char *password = "****";

//Web/Server address to read/write from 

//website or IP address of server

//=======================================================================

//                    Power on setup

//=======================================================================

void setup() {

  delay(1000);

  Serial.begin(115200);

  WiFi.mode(WIFI_OFF);        //Prevents reconnection issue (taking too long to connect)

  delay(1000);

  WiFi.mode(WIFI_STA);        //This line hides the viewing of ESP as wifi hotspot

  WiFi.begin(ssid, password);     //Connect to your WiFi router

  Serial.println("");

  Serial.print("Connecting");

  // Wait for connection

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

    delay(500);

    Serial.print(".");

  }

  //If connection successful show IP address in serial monitor

  Serial.println("");

  Serial.print("Connected to ");

  Serial.println(ssid);

  Serial.print("IP address: ");

  Serial.println(WiFi.localIP());  //IP address assigned to your ESP

}

//=======================================================================

//                    Main Program Loop

//=======================================================================

void loop() {

  HTTPClient http;    //Declare object of class HTTPClient

  String ADCData, station, getData, Link;

  int adcvalue=253;  //Read Analog value of LDR

  ADCData = String(adcvalue);   //String to interger conversion

  station = "B";

Answer 1

localhost 是“自我”的简写。您告诉 NodeMCU 将请求发送给它自己，尽管它甚至可能不理解 localhost。您需要使用您尝试向其发送请求的计算机的实际名称或 IP 地址。Localhost 永远不会像您在此处尝试使用它的方式工作（从一台计算机向另一台计算机发送请求）。

Answer 2

试试这个：<?php&nbsp;echo "<pre>";print_r($_REQUEST);?>