微信硬件平台（八） 3 ESP8266向微信服务器请求设备绑定的用户

https://api.weixin.qq.com/device/get_openid?access_token=自己申请微信token&device_type=gh_e93c1b3098b9&device_id=gh_e93c1b3098b9_dae1c2072212185c

ESP8266代码实现

#include <ESP8266WiFi.h>

const char* ssid     = "HUAWEI-H3VBKZ";
const char* password = "13991320169"  //-1;

const char* host = "api.weixin.qq.com";

void setup() {
  Serial.begin(115200);
  delay(10);

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password); //works!

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  delay(10000);

  Serial.print("connecting to ");
  Serial.println(host);

  // Use WiFiClient class to create TCP connections
  WiFiClient client;
  const int httpPort = 80;
  if (!client.connect(host, httpPort)) { //works!
    Serial.println("connection failed");
    return;
  }

  // We now create a URI for the request
  String url = "/device/get_openid";
  url += "?access_token=";
  url +="19_PwEib-mFrCmjdMfhehHgRJXF9TUEUr8ewWDUBAgbQUOojVjwg3lGXD3ei73O1blBZvOWqXwxTSM4kLUJru1ZFFQy8-6yL1a7hhhFZp-huEIJSGLhmbvbsKdIbo_hB8GiRmQiYnuhdtr1l1z3MNKgAAAGHE";// 有效期2个小时
  url += "&device_type=";
  url += "gh_e93c1b3098b9";
  url += "&device_id=";
  url += "gh_e93c1b3098b9_dae1c2072212185c";

 // Serial.print("Requesting URL: ");
 // Serial.println(url);

  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Connection: close\r\n\r\n");
    delay(600);
    //处理返回信息
    String line = client.readStringUntil('\n');
    while (client.available() > 0) {
      line += client.readStringUntil('\n');
      line +='\n';
    }
    Serial.println(line);
    client.stop();

  Serial.println();
  Serial.println("closing connection");
}

　　

改进版本

自动将获取得到的用户ID组分割成数组逐一保存

#include <ESP8266WiFi.h>
#include <ArduinoJson.h>

/*

{
    "errcode": 42001,
    "errmsg": "access_token expired"
}

*/
#define WEIXIN_TOKEN   "19_uIzAk_rDxS4CLZoAk5016hvXmrjGw-jnH3zPQnZwnZhcw_H7PpfQvWl2KX4vZtl5ykxCJKiRk5ED-rSZs88g-cvq2qkHFKEwSh8ga_phKkg8VNfJbf_u8oB2R7cGhksmBUXpukZ6UhyM729BWXYhAIAPQR"
#define PRODUCT_TYPE   "gh_e93c1b3098b9"
//#define PRODUCT_ID   "gh_e93c1b3098b9_dae1c2072212185c"
#define PRODUCT_ID     "gh_e93c1b3098b9_cc8c4f4cd693972f"

#define host         "api.weixin.qq.com"
#define httpPort     80
#define ssid      "HUAWEI-H3VBKZ"
#define password  "13991320168"

void setup() {
  Serial.begin(115200);
  delay(10);

  // We start by connecting to a WiFi network

  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password); 

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

/*
功能：5-0 请求设备绑定的用户ID
输入：
String UESRID    微信用户ID
String CONTENT   要发送的内容
输出：           无
*/

 /*

"errcode":42001,"errmsg":"access_token expired"}

 {
    "open_id": [
        "ognVI6JsmBGd7lxYTZY4GH29LcNg",
        "ognVI6GpDeseo6Qe_S7hGPgwlt8E",
        "ognVI6CC8_HsPH5zgydb-PZFmxqU",
        "ognVI6FxhqhGVuGhsZbmDyutgsMQ"
    ],
    "resp_msg": {
        "ret_code": 0,
        "error_info": "ok"
    }
}

 */

String RequestUserId(){
  Serial.println("/**************************************************/");
  Serial.println("5 request userID! ");

 Serial.print("connecting to ");
  Serial.println(host);

  // Use WiFiClient class to create TCP connections
  WiFiClient client;

  if (!client.connect(host, httpPort)) { //works!
    Serial.println("connection failed");
    return "fail";
  }

  // We now create a URI for the request
  String url = "/device/get_openid";
  url += "?access_token=";
  url +=  WEIXIN_TOKEN;
  url += "&device_type=";
  url += PRODUCT_TYPE;
  url += "&device_id=";
  url += PRODUCT_ID;

  // This will send the request to the server
  client.print(String("GET ") + url + " HTTP/1.1\r\n" +
               "Host: " + host + "\r\n" +
               "Connection: close\r\n\r\n");
    delay(600);
      Serial.println();
    //处理返回信息
    String line = client.readStringUntil('\n');
    while (client.available() > 0) {
      line += client.readStringUntil('\n');
      line +='\n';
    }
  //  Serial.println(line);
    client.stop();

     if(line.indexOf("access_token")>0){
         Serial.println("access_token expired");
         return "fail";
      }

    //datStart = s.indexOf(timesign) + strlen(timesign);

    if(line.indexOf("open_id")>0){
      //{"open_id":["ognVI6JsmBGd7lxYTZY4GH29LcNg","ognVI6GpDeseo6Qe_S7hGPgwlt8E","ognVI6CC8_HsPH5zgydb-PZFmxqU","ognVI6FxhqhGVuGhsZbmDyutgsMQ"],"resp_msg":{"ret_code":0,"error_info":"ok"}
     int datebegin= line.indexOf("{");
   //  int dateend=line.length();
     int dateend=line.lastIndexOf("}");
     String datajson=line.substring(datebegin,dateend);

     Serial.println(datajson);
     return datajson;
      }
      else{
           Serial.println("fail");
        return "fail";
      }

  Serial.println();
  Serial.println("closing connection \n");
}

/*
功能：5-1 对用户ID组进行解析拆分
输入：
String json              用户ID组   "ognVI6JsmBGd7lxYTZY4GH29LcNg","ognVI6GpDeseo6Qe_S7hGPgwlt8E","ognVI6CC8_HsPH5zgydb-PZFmxqU","ognVI6FxhqhGVuGhsZbmDyutgsMQ",
String json_ruselt[]     拆分存放的数组
int sizejson             拆分存放的数组大小 默认10
输出：           成功返回1
*/

bool RequestUserId_json(String json,String json_ruselt[],int sizejson){

//    if(json.length()<1){return 0;}
//    DynamicJsonDocument  jsonBuffer(json.length());
//    deserializeJson(jsonBuffer, json);
//    JsonObject root = jsonBuffer.as<JsonObject>();
//
//  String  ueserid1 = root[String("open_id")][0];
//  String  ueserid2 = root[String("open_id")][1];
//  String  ueserid3 = root[String("open_id")][2];
//  String  ueserid4 = root[String("open_id")][3];
//  Serial.println();
//  Serial.println(ueserid1);
//  Serial.println(ueserid2);
//  Serial.println(ueserid3);
//  Serial.println(ueserid4);

     int datebegin= json.indexOf("[")+1;
     int dateend=json.indexOf("]");
     String datajson=json.substring(datebegin,dateend);
     datajson= datajson+',';

    // Serial.println(datajson);

      /*
      ognVI6JsmBGd7lxYTZY4GH29LcNg   dongdong
      ognVI6GpDeseo6Qe_S7hGPgwlt8E
      ognVI6CC8_HsPH5zgydb-PZFmxqU
      ognVI6FxhqhGVuGhsZbmDyutgsMQ

      */
      int i=0;
     while(datajson.length()>0){
      int idbegin=0;
      int idend=datajson.indexOf(",");
      String id=datajson.substring(idbegin,idend);
      id=id.substring(1,id.length()-1);

      if(i<sizejson){
      json_ruselt[i]=id;
      i++;}

    //  Serial.println(id);
      datajson=datajson.substring(idend+1,datajson.length());
     }

     return 1;
  }

void loop() {
  delay(10000);
  String json= RequestUserId(); // 得到用户ID组
  String json_ruselt[10];  // 解析的存放数组
  bool user_num_ok= RequestUserId_json(json,json_ruselt,10);
  if(!user_num_ok) return;
  else{
      for(int i=0;i<10;i++){
      if(json_ruselt[i]!="")
      Serial.println(json_ruselt[i]);
    }
  }

}