├── .editorconfig ├── .gitignore ├── README.md ├── esp8266 ├── delete.ino ├── get-by-id.ino ├── get.ino └── post.ino ├── files └── esp8266-request.png └── server └── nodejs ├── .gitignore ├── index.js ├── package-lock.json └── package.json /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | charset = utf-8 5 | end_of_line = lf 6 | indent_size = 2 7 | indent_style = space 8 | insert_final_newline = true 9 | trim_trailing_whitespace = true 10 | 11 | [*.md] 12 | indent_size = 4 13 | indent_style = space 14 | trim_trailing_whitespace = false -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .idea -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Realizando requisições HTTP no ESP8266 utilizando a biblioteca HTTPClient 2 | 3 | ![img](https://raw.githubusercontent.com/douglaszuqueto/esp8266-http-request/master/files/esp8266-request.png) 4 | 5 | ## Introdução 6 | 7 | Certamente você já precisou recuperar algum dado de um servidor, ou até mesmo enviar algum dado para o mesmo a partir do seu embarcado - neste caso estamos nos referindo ao nosso querido ESP8266. 8 | 9 | Portanto, neste artigo, será abordado um pequeno cenário de como utilizar o protocolo HTTP para recuperação/envio de dados ao servidor. 10 | 11 | ## HTTP(Hypertext Transfer Protocol) 12 | 13 | O famoso protocolo HTTP. Quem nunca usou?. 14 | 15 | Um protocolo baseado na arquitetura cliente/servidor, amplamente utilizado no nosso dia a dia - creio que grande parte das comunicações hoje em dia, usufruem do http. 16 | 17 | ### Verbos HTTP(mais utilizados - principalmente em API's) 18 | 19 | O HTTP disponha de um conjunto de verbos http, então sem muitas delongas, fica abaixo os mais comuns e utilizados hoje nas comunicações: 20 | 21 | | Verbo | descrição | 22 | | --- | --- | 23 | | GET | requisitar registros do servidor | 24 | | POST | cadastrar um registro no servidor | 25 | | PUT | atualizar algum registro no servidor | 26 | | DELETE | remover algum registro do servidor | 27 | 28 | Nas descrições dos verbos mencionados acima, pensem em um recurso de como manipular um sensor - cadastrá-lo, requisitar, atualizar e remover - famoso **CRUD** (create, read, update, delete). 29 | 30 | ## WebService para teste 31 | 32 | Antes de continuar, segue uma simples estrutura para testes de um simples webservice em nodejs. 33 | 34 | ```js 35 | const express = require('express') 36 | , bodyParser = require('body-parser') 37 | , cors = require('cors') 38 | , app = express(); 39 | 40 | /* Middlewares */ 41 | app.use(bodyParser.json()); 42 | app.use(bodyParser.urlencoded({extended: true})); 43 | app.use(cors()); 44 | 45 | const sensors = [ 46 | { 47 | 'id': 1234, 48 | 'name': 'DHT22', 49 | 'type': 'temperature', 50 | 'value': 25, 51 | }, 52 | { 53 | 'id': 4321, 54 | 'name': 'DHT11', 55 | 'type': 'temperature', 56 | 'value': 25, 57 | } 58 | ]; 59 | 60 | /* Routes */ 61 | app.get('/sensors', (req, res) => res.json(sensors)); 62 | 63 | app.get('/sensors/:id', (req, res) => { 64 | const id = parseInt(req.params.id); 65 | const sensor = sensors.filter((item) => item.id === id); 66 | 67 | if (sensor.length <= 0) { 68 | return res.json({}); 69 | } 70 | return res.json(sensor[0]); 71 | }); 72 | 73 | app.post('/sensors', (req, res) => { 74 | const sensor = { 75 | 'id': req.body.id, 76 | 'name': req.body.name, 77 | 'type': req.body.type, 78 | 'value': req.body.value, 79 | }; 80 | sensors.push(sensor); 81 | 82 | res.json(sensor); 83 | }); 84 | 85 | /* App listen */ 86 | app.listen(3000, () => { 87 | console.log(`nodejs-backend is running`); 88 | console.log(`open in http://127.0.0.1:3000/sensors`); 89 | }); 90 | ``` 91 | 92 | O script se encontra dentro da pasta **server/nodejs**. Para rodar basta ter o nodejs instalado na maquina. Com ele instalado, voce só precisa baixar as depedências do projeto utilizando o NPM ou Yarn. 93 | 94 | ## Biblioteca HTTPClient 95 | 96 | A lib HTTPClient provê de forma simples e descomplicada **realizar comunicações http** com um servidor. 97 | 98 | Possui um conjuntos de métodos simples e abstratos caso seja necessário usar algo mais complexo. A API em si, achei deveras interessante e de fácil entendimento. 99 | 100 | Para utilizar, basta incluir a biblioteca em seu sketch. 101 | 102 | ```c 103 | #include 104 | ``` 105 | 106 | e.. para utilizar, basta criar o objeto da mesma: 107 | 108 | ``` 109 | HTTPClient http; 110 | ``` 111 | 112 | A partir deste momento, você já esta apto a realizar uma comunicação http com o servidor, será abordado em um tópico futuro, mas antes de começar, vamos dar uma explorada nos principais métodos que a biblioteca oferece. 113 | 114 | ### Métodos 115 | 116 | Abaixo, segue uma lista dos metodos que utilizei no decorrer deste artigo: 117 | 118 | ```c 119 | bool begin(String url); // metodo responsavel por começar a comunicação 120 | 121 | void addHeader(const String& name, const String& value, bool first = false, bool replace = true); // método para adicionar cabeçalhos ao header de sua requisicao 122 | 123 | int GET(); // responsavel por realizar uma requisição do tipo GET ao servidor 124 | 125 | int POST(String payload); // responsavel por realizar uma requisição do tipo POST ao servidor 126 | 127 | int sendRequest(const char * type, String payload); // metodo abstrado, caso queira usar outro método que a lib não suporte - DELETE, por exemplo 128 | 129 | String getString(void); // recupera a resposta da requisicao, ja convertido em string 130 | 131 | void end(void); // responsavel por encerrar a comunicação 132 | 133 | ``` 134 | 135 | ## Estrutura simples de uma requisição HTTP 136 | 137 | ```c 138 | // ############# HTTP REQUEST ################ // 139 | 140 | http.begin('URL DO SEU SERVICO'); // inicia a comunicacao com base na sua url 141 | int httpCode = http.GET(); // efetua uma requisicao do tipo get e retorna o código de status da conexao 142 | 143 | if (httpCode < 0) { // caso o status for negativo, mostrará a mensagem no monitor serial 144 | Serial.println("request error - " + httpCode); 145 | return; 146 | } 147 | if (httpCode != HTTP_CODE_OK) { // caso o status for diferente de 200, reinicia o ciclo da requisicao 148 | return; 149 | } 150 | String payload = http.getString(); // passando das verificacoes acima, voce tem acesso ao corpo da mensagem retornado pelo servidor 151 | 152 | http.end(); // finaliza a conexao 153 | 154 | Serial.println("##[RESULT]## ==> " + payload); // imprimi na serial a string retornada pelo servidor 155 | 156 | ``` 157 | ### Exemplo contendo todo firmware(básico) para o ESP 158 | 159 | ```c 160 | // ############# LIBRARIES ############### // 161 | 162 | #include 163 | #include 164 | 165 | // ############# VARIABLES ############### // 166 | 167 | const char* SSID = ""; // rede wifi 168 | const char* PASSWORD = ""; // senha da rede wifi 169 | 170 | String BASE_URL = "http://192.168.15.3:3000/"; 171 | 172 | // ############# PROTOTYPES ############### // 173 | 174 | void initSerial(); 175 | void initWiFi(); 176 | void httpRequest(String path); 177 | 178 | // ############### OBJECTS ################# // 179 | 180 | WiFiClient client; 181 | HTTPClient http; 182 | 183 | // ############## SETUP ################# // 184 | 185 | void setup() { 186 | initSerial(); 187 | initWiFi(); 188 | } 189 | 190 | // ############### LOOP ################# // 191 | 192 | void loop() { 193 | Serial.println("[GET] /sensors - sending request..."); 194 | Serial.println(""); 195 | 196 | httpRequest("sensors"); 197 | 198 | Serial.println(""); 199 | delay(1000); 200 | 201 | } 202 | 203 | // ############# HTTP REQUEST ################ // 204 | 205 | void httpRequest(String path) 206 | { 207 | String payload = makeRequest(path); 208 | 209 | if (!payload) { 210 | return; 211 | } 212 | 213 | Serial.println("##[RESULT]## ==> " + payload); 214 | 215 | } 216 | 217 | String makeRequest(String path) 218 | { 219 | http.begin(BASE_URL + path); 220 | int httpCode = http.GET(); 221 | 222 | if (httpCode < 0) { 223 | Serial.println("request error - " + httpCode); 224 | return ""; 225 | 226 | } 227 | 228 | if (httpCode != HTTP_CODE_OK) { 229 | return ""; 230 | } 231 | 232 | String response = http.getString(); 233 | http.end(); 234 | 235 | return response; 236 | } 237 | 238 | // ###################################### // 239 | 240 | // implementacao dos prototypes 241 | 242 | void initSerial() { 243 | Serial.begin(115200); 244 | } 245 | 246 | void initWiFi() { 247 | delay(10); 248 | Serial.println("Conectando-se em: " + String(SSID)); 249 | 250 | WiFi.begin(SSID, PASSWORD); 251 | while (WiFi.status() != WL_CONNECTED) { 252 | delay(100); 253 | Serial.print("."); 254 | } 255 | Serial.println(); 256 | Serial.print("Conectado na Rede " + String(SSID) + " | IP => "); 257 | Serial.println(WiFi.localIP()); 258 | } 259 | ``` 260 | ## Realizando requisições ao Servidor 261 | 262 | Com base no firmware acima, basicamente pouca coisa mudará em relação ao uso de outros métodos HTTP. Veja abaixo como ficaria o uso. 263 | 264 | ### GET - recuperando dados do servidor 265 | 266 | ```c 267 | http.begin('URL'); 268 | int httpCode = http.GET(); 269 | ``` 270 | 271 | ### POST - enviando dados para o servidor 272 | 273 | ```c 274 | http.begin('URL'); 275 | http.addHeader("content-type", "application/x-www-form-urlencoded"); 276 | 277 | String body = "id=7890&name=NTC&value=10"; 278 | 279 | int httpCode = http.POST(body); 280 | ``` 281 | 282 | ## Finalizando 283 | 284 | Todos exemplos que foram testados na construção deste artigo estarão no repositório do Github, segue o link: 285 | 286 | * [GET](https://github.com/douglaszuqueto/esp8266-http-request/blob/master/esp8266/get.ino); 287 | * [POST](https://github.com/douglaszuqueto/esp8266-http-request/blob/master/esp8266/post.ino); 288 | * [GET by id - busca por ID](https://github.com/douglaszuqueto/esp8266-http-request/blob/master/esp8266/get-by-id.ino); 289 | * [DELETE](https://github.com/douglaszuqueto/esp8266-http-request/blob/master/esp8266/delete.ino); 290 | 291 | Deu para perceber o quão simples fica realizar requisições http a partir do esp? Eu particularmente curti bastante - eu nunca havia utilizado esta lib :P. 292 | 293 | Os próximos passos será testar mais a biblioteca e também realizar o parser do JSON retornado pelo servidor utilizando a lib **ArduinoJSON**. Assim, dando alguma utilidade de fato ao contexto de determinado projeto. 294 | 295 | ## Referências 296 | 297 | * [Biblioteca ESP8266HTTPClient](https://github.com/esp8266/Arduino/tree/master/libraries/ESP8266HTTPClient); 298 | * [Hypertext Transfer Protocol](https://pt.wikipedia.org/wiki/Hypertext_Transfer_Protocol); 299 | 300 | ## Está gostando dos materiais que vêm sendo produzidos? 301 | 302 | Caso tenha gostado deste e de outros materiais que mantenho, no dia 18/06/2017 abri uma campanha de financiamento recorrente com o objetivo de captar recursos para uma dedicação fulltime em projetos open source. 303 | 304 | Portanto, caso deseja me ajudar, fica aqui o [link do meu Apoia.se](https://apoia.se/douglaszuqueto). Desde já, muito obrigado :D. 305 | -------------------------------------------------------------------------------- /esp8266/delete.ino: -------------------------------------------------------------------------------- 1 | // ############# LIBRARIES ############### // 2 | 3 | #include 4 | #include 5 | 6 | // ############# VARIABLES ############### // 7 | 8 | const char* SSID = ""; // rede wifi 9 | const char* PASSWORD = ""; // senha da rede wifi 10 | 11 | String BASE_URL = "http://192.168.15.3:3000/"; 12 | 13 | // ############# PROTOTYPES ############### // 14 | 15 | void initSerial(); 16 | void initWiFi(); 17 | void httpRequest(String path); 18 | 19 | // ############### OBJECTS ################# // 20 | 21 | WiFiClient client; 22 | HTTPClient http; 23 | 24 | // ############## SETUP ################# // 25 | 26 | void setup() { 27 | initSerial(); 28 | initWiFi(); 29 | } 30 | 31 | // ############### LOOP ################# // 32 | 33 | void loop() { 34 | Serial.println("[DELETE] /sensors - sending request..."); 35 | Serial.println(""); 36 | 37 | httpRequest("sensors/1234"); 38 | 39 | Serial.println(""); 40 | delay(1000); 41 | 42 | } 43 | 44 | // ############# HTTP REQUEST ################ // 45 | 46 | void httpRequest(String path) 47 | { 48 | String payload = makeRequest(path); 49 | 50 | if (!payload) { 51 | return; 52 | } 53 | 54 | Serial.println("##[RESULT]## ==> " + payload); 55 | 56 | } 57 | 58 | String makeRequest(String path) 59 | { 60 | http.begin(BASE_URL + path); 61 | int httpCode = http.sendRequest("DELETE"); 62 | 63 | if (httpCode < 0) { 64 | Serial.println("request error - " + httpCode); 65 | return ""; 66 | 67 | } 68 | 69 | if (httpCode != HTTP_CODE_OK) { 70 | return ""; 71 | } 72 | 73 | String response = http.getString(); 74 | http.end(); 75 | 76 | return response; 77 | } 78 | 79 | // ###################################### // 80 | 81 | // implementacao dos prototypes 82 | 83 | void initSerial() { 84 | Serial.begin(115200); 85 | } 86 | 87 | void initWiFi() { 88 | delay(10); 89 | Serial.println("Conectando-se em: " + String(SSID)); 90 | 91 | WiFi.begin(SSID, PASSWORD); 92 | while (WiFi.status() != WL_CONNECTED) { 93 | delay(100); 94 | Serial.print("."); 95 | } 96 | Serial.println(); 97 | Serial.print("Conectado na Rede " + String(SSID) + " | IP => "); 98 | Serial.println(WiFi.localIP()); 99 | } 100 | -------------------------------------------------------------------------------- /esp8266/get-by-id.ino: -------------------------------------------------------------------------------- 1 | // ############# LIBRARIES ############### // 2 | 3 | #include 4 | #include 5 | 6 | // ############# VARIABLES ############### // 7 | 8 | const char* SSID = ""; // rede wifi 9 | const char* PASSWORD = ""; // senha da rede wifi 10 | 11 | String BASE_URL = "http://192.168.15.3:3000/"; 12 | 13 | // ############# PROTOTYPES ############### // 14 | 15 | void initSerial(); 16 | void initWiFi(); 17 | void httpRequest(String path); 18 | 19 | // ############### OBJECTS ################# // 20 | 21 | WiFiClient client; 22 | HTTPClient http; 23 | 24 | // ############## SETUP ################# // 25 | 26 | void setup() { 27 | initSerial(); 28 | initWiFi(); 29 | } 30 | 31 | // ############### LOOP ################# // 32 | 33 | void loop() { 34 | Serial.println("[GET] /sensors/1234 - sending request..."); 35 | Serial.println(""); 36 | 37 | httpRequest("sensors/1234"); 38 | 39 | Serial.println(""); 40 | delay(1000); 41 | 42 | } 43 | 44 | // ############# HTTP REQUEST ################ // 45 | 46 | void httpRequest(String path) 47 | { 48 | String payload = makeRequest(path); 49 | 50 | if (!payload) { 51 | return; 52 | } 53 | 54 | Serial.println("##[RESULT]## ==> " + payload); 55 | 56 | } 57 | 58 | String makeRequest(String path) 59 | { 60 | http.begin(BASE_URL + path); 61 | int httpCode = http.GET(); 62 | 63 | if (httpCode < 0) { 64 | Serial.println("request error - " + httpCode); 65 | return ""; 66 | 67 | } 68 | 69 | if (httpCode != HTTP_CODE_OK) { 70 | return ""; 71 | } 72 | 73 | String response = http.getString(); 74 | http.end(); 75 | 76 | return response; 77 | } 78 | 79 | // ###################################### // 80 | 81 | // implementacao dos prototypes 82 | 83 | void initSerial() { 84 | Serial.begin(115200); 85 | } 86 | 87 | void initWiFi() { 88 | delay(10); 89 | Serial.println("Conectando-se em: " + String(SSID)); 90 | 91 | WiFi.begin(SSID, PASSWORD); 92 | while (WiFi.status() != WL_CONNECTED) { 93 | delay(100); 94 | Serial.print("."); 95 | } 96 | Serial.println(); 97 | Serial.print("Conectado na Rede " + String(SSID) + " | IP => "); 98 | Serial.println(WiFi.localIP()); 99 | } 100 | -------------------------------------------------------------------------------- /esp8266/get.ino: -------------------------------------------------------------------------------- 1 | // ############# LIBRARIES ############### // 2 | 3 | #include 4 | #include 5 | 6 | // ############# VARIABLES ############### // 7 | 8 | const char* SSID = ""; // rede wifi 9 | const char* PASSWORD = ""; // senha da rede wifi 10 | 11 | String BASE_URL = "http://192.168.15.3:3000/"; 12 | 13 | // ############# PROTOTYPES ############### // 14 | 15 | void initSerial(); 16 | void initWiFi(); 17 | void httpRequest(String path); 18 | 19 | // ############### OBJECTS ################# // 20 | 21 | WiFiClient client; 22 | HTTPClient http; 23 | 24 | // ############## SETUP ################# // 25 | 26 | void setup() { 27 | initSerial(); 28 | initWiFi(); 29 | } 30 | 31 | // ############### LOOP ################# // 32 | 33 | void loop() { 34 | Serial.println("[GET] /sensors - sending request..."); 35 | Serial.println(""); 36 | 37 | httpRequest("sensors"); 38 | 39 | Serial.println(""); 40 | delay(1000); 41 | 42 | } 43 | 44 | // ############# HTTP REQUEST ################ // 45 | 46 | void httpRequest(String path) 47 | { 48 | String payload = makeRequest(path); 49 | 50 | if (!payload) { 51 | return; 52 | } 53 | 54 | Serial.println("##[RESULT]## ==> " + payload); 55 | 56 | } 57 | 58 | String makeRequest(String path) 59 | { 60 | http.begin(BASE_URL + path); 61 | int httpCode = http.GET(); 62 | 63 | if (httpCode < 0) { 64 | Serial.println("request error - " + httpCode); 65 | return ""; 66 | 67 | } 68 | 69 | if (httpCode != HTTP_CODE_OK) { 70 | return ""; 71 | } 72 | 73 | String response = http.getString(); 74 | http.end(); 75 | 76 | return response; 77 | } 78 | 79 | // ###################################### // 80 | 81 | // implementacao dos prototypes 82 | 83 | void initSerial() { 84 | Serial.begin(115200); 85 | } 86 | 87 | void initWiFi() { 88 | delay(10); 89 | Serial.println("Conectando-se em: " + String(SSID)); 90 | 91 | WiFi.begin(SSID, PASSWORD); 92 | while (WiFi.status() != WL_CONNECTED) { 93 | delay(100); 94 | Serial.print("."); 95 | } 96 | Serial.println(); 97 | Serial.print("Conectado na Rede " + String(SSID) + " | IP => "); 98 | Serial.println(WiFi.localIP()); 99 | } 100 | -------------------------------------------------------------------------------- /esp8266/post.ino: -------------------------------------------------------------------------------- 1 | // ############# LIBRARIES ############### // 2 | 3 | #include 4 | #include 5 | 6 | // ############# VARIABLES ############### // 7 | 8 | const char* SSID = "VIVO-8594"; // rede wifi 9 | const char* PASSWORD = "C6620E8594"; // senha da rede wifi 10 | 11 | String BASE_URL = "http://192.168.15.3:3000/"; 12 | 13 | // ############# PROTOTYPES ############### // 14 | 15 | void initSerial(); 16 | void initWiFi(); 17 | void httpRequest(String path); 18 | 19 | // ############### OBJECTS ################# // 20 | 21 | WiFiClient client; 22 | HTTPClient http; 23 | 24 | // ############## SETUP ################# // 25 | 26 | void setup() { 27 | initSerial(); 28 | initWiFi(); 29 | } 30 | 31 | // ############### LOOP ################# // 32 | 33 | void loop() { 34 | Serial.println("[POST] /sensors - sending request..."); 35 | Serial.println(""); 36 | 37 | httpRequest("sensors"); 38 | 39 | Serial.println(""); 40 | delay(1000); 41 | 42 | } 43 | 44 | // ############# HTTP REQUEST ################ // 45 | 46 | void httpRequest(String path) 47 | { 48 | String payload = makeRequest(path); 49 | 50 | if (!payload) { 51 | return; 52 | } 53 | 54 | Serial.println("##[RESULT]## ==> " + payload); 55 | 56 | } 57 | 58 | String makeRequest(String path) 59 | { 60 | http.begin(BASE_URL + path); 61 | http.addHeader("content-type", "application/x-www-form-urlencoded"); 62 | 63 | String body = "id=7890&name=NTC&type=temperature&value=10"; 64 | 65 | int httpCode = http.POST(body); 66 | 67 | if (httpCode < 0) { 68 | Serial.println("request error - " + httpCode); 69 | return ""; 70 | 71 | } 72 | 73 | if (httpCode != HTTP_CODE_OK) { 74 | return ""; 75 | } 76 | 77 | String response = http.getString(); 78 | http.end(); 79 | 80 | return response; 81 | } 82 | 83 | // ###################################### // 84 | 85 | // implementacao dos prototypes 86 | 87 | void initSerial() { 88 | Serial.begin(115200); 89 | } 90 | 91 | void initWiFi() { 92 | delay(10); 93 | Serial.println("Conectando-se em: " + String(SSID)); 94 | 95 | WiFi.begin(SSID, PASSWORD); 96 | while (WiFi.status() != WL_CONNECTED) { 97 | delay(100); 98 | Serial.print("."); 99 | } 100 | Serial.println(); 101 | Serial.print("Conectado na Rede " + String(SSID) + " | IP => "); 102 | Serial.println(WiFi.localIP()); 103 | } 104 | -------------------------------------------------------------------------------- /files/esp8266-request.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/douglaszuqueto/esp8266-http-request/4ce454cf6e3b38e8e496cccdf609af25a8285813/files/esp8266-request.png -------------------------------------------------------------------------------- /server/nodejs/.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | yarn.lock 3 | .env -------------------------------------------------------------------------------- /server/nodejs/index.js: -------------------------------------------------------------------------------- 1 | const express = require('express') 2 | , bodyParser = require('body-parser') 3 | , cors = require('cors') 4 | , app = express(); 5 | 6 | /* Middlewares */ 7 | app.use(bodyParser.json()); 8 | app.use(bodyParser.urlencoded({extended: true})); 9 | app.use(cors()); 10 | 11 | const sensors = [ 12 | { 13 | 'id': 1234, 14 | 'name': 'DHT22', 15 | 'type': 'temperature', 16 | 'value': 25, 17 | }, 18 | { 19 | 'id': 4321, 20 | 'name': 'DHT11', 21 | 'type': 'temperature', 22 | 'value': 25, 23 | } 24 | ]; 25 | 26 | /* Routes */ 27 | app.get('/sensors', (req, res) => res.json(sensors)); 28 | 29 | app.get('/sensors/:id', (req, res) => { 30 | const id = parseInt(req.params.id); 31 | const sensor = sensors.filter((item) => item.id === id); 32 | 33 | if (sensor.length <= 0) { 34 | return res.json({}); 35 | } 36 | return res.json(sensor[0]); 37 | }); 38 | 39 | app.post('/sensors', (req, res) => { 40 | const sensor = { 41 | 'id': req.body.id, 42 | 'name': req.body.name, 43 | 'type': req.body.type, 44 | 'value': req.body.value, 45 | }; 46 | sensors.push(sensor); 47 | 48 | res.json(sensor); 49 | }); 50 | 51 | /* App listen */ 52 | app.listen(3000, () => { 53 | console.log(`nodejs-backend is running`); 54 | console.log(`open in http://127.0.0.1:3000/sensors`); 55 | }); 56 | -------------------------------------------------------------------------------- /server/nodejs/package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "douglaszuqueto-esp8266-http-request", 3 | "version": "1.0.0", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "accepts": { 8 | "version": "1.3.7", 9 | "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz", 10 | "integrity": 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-------------------------------------------------------------------------------- 1 | { 2 | "name": "douglaszuqueto-esp8266-http-request", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "index.js", 6 | "dependencies": { 7 | "body-parser": "^1.19.0", 8 | "cors": "^2.8.5", 9 | "express": "^4.17.1" 10 | }, 11 | "devDependencies": {}, 12 | "scripts": { 13 | "test": "echo \"Error: no test specified\" && exit 1" 14 | }, 15 | "author": "Douglas Zuqueto (https://douglaszuqueto.com)", 16 | "license": "MIT" 17 | } 18 | --------------------------------------------------------------------------------