Read rest-api's nested json with http get

ESPHome
1

Hi,

I would like to read a specific parameter from an api and create an action on the result being true.

Api json output:

image
image2020×794 114 KB

Current esphome config, which I modified based on somebody else’s idea…

sensor:
  - platform: wifi_signal
    name: "WiFi Signal $devicename"
    update_interval: 60s
    
  - platform: template
    name: "Gesloten"
    id: gesloten
    
http_request:
  useragent: esphome/device
  timeout: 4s
  
time:
  - platform: sntp
    on_time:
      - seconds: /10
        then:
          - lambda: |-
              HTTPClient http;
              http.begin("https://testapi.local/api/1/toggle-variable?api_key=SECRET");
              http.GET();
              DynamicJsonBuffer doc(12000);
              JsonObject& root = doc.parseObject(http.getStream());
              float ip = atof(root["date"]["toggle-variable"][1]["state"].as<char*>());
              id(gesloten).publish_state(ip);

But the sensor is not returning anything.

What I would like to do is perform an action (light.turn_on) when id: d4544d56-8a77-40e8-84bd-8be7e2a58ea3 has state: true
and turn it off when id: d4544d56-8a77-40e8-84bd-8be7e2a58ea3 state: false

I am not a coder, so this is quit hard for me.

Anyone that could help me out?

Cheers,

Michel

2

Anybody able to help?

3

I hope it’s not Covid infecting peoples willingness to help :wink:

4

Really nobody?

5

Did you end up figuring this out? I’ve been trying to do the exact same thing (with the same example you’ve used, lol)

6

No, I did not. If I ever do, I’ll share it here.

Cheers,

Michel

7

https://community.home-assistant.io/t/parsing-http-request-json-esphome/323497
我也是想通过http获取到json数据
请问你现在弄好了吗

8 
# http请求
http_request:
  useragent: esphome/device
  id: my_request
  timeout: 4s


# 定时操作
interval:
  - interval: 3s
    then:
      - if:
          condition: # 定义用于判断的条件
            wifi.connected:
          then:
            - logger.log: "WiFi已连接"

            - http_request.get:
                url: http://c3-hx711.local/sensor/percentage
                on_response:
                  then:
                    - if:
                        condition: # 判断条件 请求状态==200表示成功
                          - lambda: "return status_code == 200;"
                        then:
                          - logger.log: "请求成功"
                          - lambda: |-
                              std::string json_string = id(my_request).get_string(); // 获取http返回的字符串
                              ESP_LOGI("Rx", "%s", json_string.c_str());

                              // 尝试解析 JSON
                              json::parse_json(json_string.c_str(), [](JsonObject root) {
                                id(my_value).publish_state(root["value"]);
                              });

                              id(water_signal_count)++;

                        else:
                          - lambda: id(water_signal_count) = 0;

                          - logger.log: "请求失败"
                          - logger.log:
                              format: "Response status: %d, Duration: %u ms"
                              args: [status_code, duration_ms]

image
image1722×780 108 KB

这是我做的示例,能用,但是有bug
当url: http://c3-hx711.local/sensor/percentage设备没有在线,会导致看门狗重启

9 

# http请求
http_request:
  useragent: esphome/device
  id: my_request
  timeout: 4s

# 定时操作
interval:
  - interval: 5s
    then:
      - if:
          condition: # 定义用于判断的条件
            wifi.connected:
          then:
            - logger.log: "WiFi已连接"

            - lambda: |-
                WiFiClient client;
                HTTPClient http;
                bool begin_status = false;
                int httpCode = 0;
                int wicon,wicon_out;
                std::string buffer;
                ESP_LOGD("http", "Init Complete");
                begin_status = http.begin(client,"c3-hx711.local",80,"/sensor/vol",false);
                if(!begin_status){
                  ESP_LOGD("http", "http.begin failed");
                } else {
                  ESP_LOGD("http", "http.begin OK");
                }

                http.useHTTP10(true);
                ESP_LOGD("http", "http.useHTTP10 flag set");
                ESP_LOGD("http", "http.GET");
                httpCode = http.GET();


                if(!httpCode){
                  ESP_LOGD("http", "http.GET NOK");
                } else {
                  ESP_LOGD("http", "http.GET OK");

                }
                if (httpCode > 0) {
                  ESP_LOGD("http", "HTTP response code is %i", httpCode);
                  if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
                    // 为HTTP响应设置JSON对象
                    // 创建一个 DynamicJsonDocument 对象，大小为 4000 字节
                    DynamicJsonDocument root(4000);

                    // 从 HTTP 流中反序列化 JSON 内容
                    DeserializationError error = deserializeJson(root, http.getStream());

                    // 将 JSON 文档序列化为字符串
                    String jsonStr;
                    serializeJson(root, jsonStr);  // 使用 serializeJson() 进行紧凑输出
                    ESP_LOGD("Json", "%s",jsonStr.c_str());

                    if (root.containsKey("id"))//判断是否有id元素
                    {
                      ESP_LOGD("Json", "JSON Parse OK");
                    }
                    else {
                      ESP_LOGD("Json", "Current weather condition not found, JSON parsing failed");
                    }
                  }
                }
                else {
                  ESP_LOGD("http", "Wrong HTTP response: %i", httpCode);
                }

我的http链接是 http://c3-hx711.local/sensor/vol

1723172743787
17231727437872052×885 137 KB

注意:http和https是不一样的
虽然是获取到了Json数据,如果我的c3-hx711传感器不在线,http请求就会超时,造成设备重启

10

You are on the wrong forums. The Chinese home assistant forum is elsewhere.