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WiFi-ESP8266入门http（3-3）网页认证上网-post请求-ESP8266程序

第一版原型系统

连上西电的网

直接发送上网的认证信息

返回认证结果网页

成功上网

#include <ESP8266WiFi.h>

 #define Use_Serial Serial

struct http_request{
  
  String  Referer;
  char* host;
  int httpPort = 80;
  String host_ur ;
  String postDate ;
  
  };

  
/*WIFI账号和密码*/

const char* ssid = "stu-xdwlan";    // Enter SSID here
const char* password = "";  //Enter Password here

/*网页认证上网模式 */
 String usr_name="1601120383";//账号 
 String usr_pwd="mimaHENFuzb";//密码  加密-1

/*网页认证上网post*/
  String  Referer="http://10.255.44.33/srun_portal_pc.php?ac_id=1&";
  char* host = "10.255.44.33";
  int httpPort = 80;
  String host_ur = "srun_portal_pc.php";
  String postDate = String("")+"action=login&ac_id=1&user_ip=&nas_ip=&user_mac=&url=&username=+"+usr_name+"&password="+usr_pwd;

  
/*--------------------------------------------------------------
 * 
  通过上网认证，请自己修改postDate中的学号和密码
  
---------------------------------------------------------------*/
int hdulogin() {

  

  WiFiClient client;

  if (!client.connect(host, httpPort)) {
    Use_Serial.println("connection failed");
    return 1;
  }
  delay(10);
 
  if (postDate.length() && postDate != "0") {
    String data = (String)postDate;
    int length = data.length();

    String postRequest =
                         (String)("POST ") + "/"+host_ur+" HTTP/1.1
" +
                         "Host: " + host + "
" +
                         "Connection: Keep Alive
" +
                         "Content-Length: " + length + "
" +
                         "Accept: */*
" +
                         "Origin: http://"+host+"
" +
                          "Upgrade-Insecure-Requests: 1"+"
" +
                         "Content-Type: application/x-www-form-urlencoded;" + "
" +
                         "User-Agent: zyzandESP8266
" +
                          "Accept-Encoding: gzip, deflate"+"
" +
                          "Accept-Language: zh-CN,zh;q=0.9"+"
" +                     
                         "
" +
                         data + "
";

   
    
    client.print(postRequest);
    delay(600);
    //处理返回信息
    String line = client.readStringUntil('
');
    while (client.available() > 0) {
      line += "
"+client.readStringUntil('
');
    }
    Use_Serial.println(line);
    client.stop();
    
    if (line.indexOf("logon success") != -1 || line.indexOf("不需要") != -1) { //认证成功
      return 0;
    }
    else {
      return 2;
    }

  }
  client.stop();
  return 2;
}
 
void setup() {
  Use_Serial.begin(115200);
  delay(1000);
 
  Use_Serial.println("Connecting to ");
  Use_Serial.println(ssid);
 
  //connect to your local wi-fi network
  WiFi.begin(ssid, password);
 
  //check wi-fi is connected to wi-fi network
  while (WiFi.status() != WL_CONNECTED) {
  delay(500);
  Use_Serial.print(".");
  }
  Use_Serial.println("");
  Use_Serial.println("WiFi connected");

   hdulogin();
}
 
void loop() 
{
  
}

第二版直接访问百度

连上西电WIFI

认证上网后

ping 百度或者其他网页

返回请求网页源码

bug 百度能ping通，但是没网页，换了自己的服务器，访问hass，有数据

#include <ESP8266WiFi.h>
#include <string.h>
#include <ESP8266HTTPClient.h>
 #define Use_Serial Serial

#ifdef ESP8266
extern "C" {
#include "user_interface.h"   //含有system_get_chip_id（）的库
}
#endif


//储存SN号
String SN;

struct http_request {  
  String  Referer;
  char* host;
  int httpPort=80;
  String host_ur ;
  
  String usr_name;//账号
  String usr_pwd;//密码
 
  String postDate;

  };

/*WIFI账号和密码*/

const char* ssid = "stu-xdwlan";    // Enter SSID here
const char* password = "";  //Enter Password here


/*网页认证上网post*/
//  String  Referer="http://10.255.44.33/srun_portal_pc.php?ac_id=1&";
//  char* host = "10.255.44.33";
//  int httpPort = 80;
//  String host_ur = "srun_portal_pc.php";

/*网页认证上网模式 */
// String usr_name;//账号
// String usr_pwd;//密码
//  String postDate = String("")+"action=login&ac_id=1&user_ip=&nas_ip=&user_mac=&url=&username=+"+usr_name+"&password="+usr_pwd;

  
/*--------------------------------------------------------------
 * 
  通过上网认证，请自己修改postDate中的学号和密码
  
---------------------------------------------------------------*/
int hdulogin(struct http_request ruqest) {
  WiFiClient client;

  if (!client.connect(ruqest.host, ruqest.httpPort)) {
    Use_Serial.println("connection failed");
    return 1;
  }
  delay(10);
 
  if (ruqest.postDate.length() && ruqest.postDate != "0") {
    String data = (String)ruqest.postDate;
    int length = data.length();

    String postRequest =
                         (String)("POST ") + "/"+ruqest.host_ur+" HTTP/1.1
" +
                         "Host: " +ruqest.host + "
" +
                         "Connection: Keep Alive
" +
                         "Content-Length: " + length + "
" +
                         "Accept: */*
" +
                         "Origin: http://"+ruqest.host+"
" +
                          "Upgrade-Insecure-Requests: 1"+"
" +
                         "Content-Type: application/x-www-form-urlencoded;" + "
" +
                         "User-Agent: zyzandESP8266
" +
                          "Accept-Encoding: gzip, deflate"+"
" +
                          "Accept-Language: zh-CN,zh;q=0.9"+"
" +                     
                         "
" +
                         data + "
";

   
    
    client.print(postRequest);
    delay(600);
    //处理返回信息
    String line = client.readStringUntil('
');
    while (client.available() > 0) {
      line += "
"+client.readStringUntil('
');
    }
    Use_Serial.println(line);
    client.stop();
    
    if (line.indexOf("时间") != -1 || line.indexOf("登陆") != -1) { //认证成功
      return 0;
       Use_Serial.println("time ----------- find ");
    }
    else {
      return 2;
    }

  }
  client.stop();
  return 2;
}
 
void setup() {
  Use_Serial.begin(115200);
  delay(1000);
 
  Use_Serial.println("Connecting to ");
  Use_Serial.println(ssid);
 
  //connect to your local wi-fi network
  WiFi.begin(ssid, password);
 
  //check wi-fi is connected to wi-fi network
  while (WiFi.status() != WL_CONNECTED) {
  delay(500);
  Use_Serial.print(".");
  }
  Use_Serial.println("");
  Use_Serial.println("WiFi connected");

  SN = (String )system_get_chip_id();
  Serial.println(SN);
  
// 认证上网
  http_request ruqest;
  ruqest.Referer="http://10.255.44.33/srun_portal_pc.php?ac_id=1&";
  ruqest.host = "10.255.44.33";
  ruqest.httpPort = 80;
  ruqest.host_ur = "srun_portal_pc.php";
  ruqest.usr_name="1601120383";//账号
  ruqest.usr_pwd="mimaHENFuzb";//密码  密码已经修改 +1
  ruqest.postDate = String("")+"action=login&ac_id=1&user_ip=&nas_ip=&user_mac=&url=&username=+"+ ruqest.usr_name+"&password="+ruqest.usr_pwd;
     
   
   hdulogin(ruqest);

}




void loop() 
{

if(WiFi.status() == WL_CONNECTED){
 
    HTTPClient http;

    http.begin("www.baidu.com", 80,"/"); //HTTP

    int httpCode = http.GET();
    
    if (httpCode) {
      // 打印返回代码
      Serial.printf("code=%d
", httpCode);

      // 数据正常返回
      if (httpCode == 200) {      
        String payload = http.getString();
        Serial.print(payload);
        
        }
        else{
           Serial.print("httpCode... failed
");
           delay(5000);
          }

    }
 else {
      Serial.print("GET... failed
");
    }
    delay(5000);
}
}

　　第三版 HTTP+MQTT

西电网页认证上网

直接连接公网mqtt

手机发消息，esp8266向电脑打印出来

arduino 不支持中文汉字打印输出

上面是西电网页认证后返回的网页源码

下面是从MQTT服务器接收的数据

至此初步完成ESP8266网页认证上网模式。

下一步，将固定的post请求信息换成网页输入可以配置的

网页输入wifi名（网页认证模式的wifi），无密码
网页输入自己的学号和密码
自动截取给网页服务器返回的 http请求和参数格式
由此配置ESO8266来网页认证上网

关于网页服务器建立，返回页面，手动输入配置信息的教程看 ESP8266路由文件教程。

#include <ESP8266WiFi.h>
#include <string.h>
#include <ESP8266HTTPClient.h>
 #define Use_Serial Serial

#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"

#define AIO_SERVER      "www.dongvdong.top"
#define AIO_SERVERPORT  1883
#define AIO_USERNAME    ""
#define AIO_KEY         ""
WiFiClient mqttclient;
Adafruit_MQTT_Client mqtt(&mqttclient, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_USERNAME, AIO_KEY);
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, AIO_USERNAME "/test", MQTT_QOS_1);
void onoffcallback(char *data, uint16_t len) {
  Serial.print("Hey we're in a onoff callback, the button value is: ");
  Serial.println(data);
}

void MQTT_connect() {
  int8_t ret;

  // Stop if already connected.
  if (mqtt.connected()) {
    return;
  }

  Serial.print("Connecting to MQTT... ");

  uint8_t retries = 3;
  while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
       Serial.println(mqtt.connectErrorString(ret));
       Serial.println("Retrying MQTT connection in 10 seconds...");
       mqtt.disconnect();
       delay(10000);  // wait 10 seconds
       retries--;
       if (retries == 0) {
         // basically die and wait for WDT to reset me
         while (1);
       }
  }
  Serial.println("MQTT Connected!");
}
 

#ifdef ESP8266
extern "C" {
#include "user_interface.h"   //含有system_get_chip_id（）的库
}
#endif


//储存SN号
String SN;

struct http_request {  
  String  Referer;
  char* host;
  int httpPort=80;
  String host_ur ;
  
  String usr_name;//账号
  String usr_pwd;//密码
 
  String postDate;

  };

/*WIFI账号和密码*/

const char* ssid = "stu-xdwlan";    // Enter SSID here
const char* password = "";  //Enter Password here


/*网页认证上网post*/
//  String  Referer="http://10.255.44.33/srun_portal_pc.php?ac_id=1&";
//  char* host = "10.255.44.33";
//  int httpPort = 80;
//  String host_ur = "srun_portal_pc.php";

/*网页认证上网模式 */
// String usr_name;//账号
// String usr_pwd;//密码
//  String postDate = String("")+"action=login&ac_id=1&user_ip=&nas_ip=&user_mac=&url=&username=+"+usr_name+"&password="+usr_pwd;

  
/*--------------------------------------------------------------
 * 
  通过上网认证，请自己修改postDate中的学号和密码
  
---------------------------------------------------------------*/
int hdulogin(struct http_request ruqest) {
  WiFiClient client;

  if (!client.connect(ruqest.host, ruqest.httpPort)) {
    Use_Serial.println("connection failed");
    return 1;
  }
  delay(10);
 
  if (ruqest.postDate.length() && ruqest.postDate != "0") {
    String data = (String)ruqest.postDate;
    int length = data.length();

    String postRequest =
                         (String)("POST ") + "/"+ruqest.host_ur+" HTTP/1.1
" +
                         "Host: " +ruqest.host + "
" +
                         "Connection: Keep Alive
" +
                         "Content-Length: " + length + "
" +
                         "Accept: */*
" +
                         "Origin: http://"+ruqest.host+"
" +
                          "Upgrade-Insecure-Requests: 1"+"
" +
                         "Content-Type: application/x-www-form-urlencoded;" + "
" +
                         "User-Agent: zyzandESP8266
" +
                          "Accept-Encoding: gzip, deflate"+"
" +
                          "Accept-Language: zh-CN,zh;q=0.9"+"
" +                     
                         "
" +
                         data + "
";

   
    
    client.print(postRequest);
    delay(600);
    //处理返回信息
    String line = client.readStringUntil('
');
    while (client.available() > 0) {
      line += "
"+client.readStringUntil('
');
    }
    Use_Serial.println(line);
    client.stop();
    
    if (line.indexOf("时间") != -1 || line.indexOf("登陆") != -1) { //认证成功
      return 0;
       Use_Serial.println("time ----------- find ");
    }
    else {
      return 2;
    }

  }
  client.stop();
  return 2;
}


void setup() {
  Use_Serial.begin(115200);
  delay(1000);
 
  Use_Serial.println("Connecting to ");
  Use_Serial.println(ssid);
 
  //connect to your local wi-fi network
  WiFi.begin(ssid, password);
 
  //check wi-fi is connected to wi-fi network
  while (WiFi.status() != WL_CONNECTED) {
  delay(500);
  Use_Serial.print(".");
  }
  Use_Serial.println("");
  Use_Serial.println("WiFi connected");

  SN = (String )system_get_chip_id();
  Serial.println(SN);


     onoffbutton.setCallback(onoffcallback);
     mqtt.subscribe(&onoffbutton);

      
// 认证上网
  http_request ruqest;
  ruqest.Referer="http://10.255.44.33/srun_portal_pc.php?ac_id=1&";
  ruqest.host = "10.255.44.33";
  ruqest.httpPort = 80;
  ruqest.host_ur = "srun_portal_pc.php";
  ruqest.usr_name="1601120383";//账号
  ruqest.usr_pwd="mimaHENFuzb";//密码  经修改  +1  
  ruqest.postDate = String("")+"action=login&ac_id=1&user_ip=&nas_ip=&user_mac=&url=&username=+"+ ruqest.usr_name+"&password="+ruqest.usr_pwd;
     
   
   hdulogin(ruqest);

}




void loop() 
{

if(WiFi.status() == WL_CONNECTED){
 
     MQTT_connect();
     mqtt.processPackets(10000);
    if(! mqtt.ping()) {
    mqtt.disconnect();
    
       }
   
    }
 else {
      Serial.print("wifi... failed
");
      
    }
    delay(5000);
}

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原文地址：https://www.cnblogs.com/kekeoutlook/p/9616614.html

WiFi-ESP8266入门http（3-3）网页认证上网-post请求-ESP8266程序

第一版 原型系统

第二版 直接访问百度

第三版 HTTP+MQTT

第一版原型系统

第二版直接访问百度

　　第三版 HTTP+MQTT