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65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2025, Benoit BLANCHON
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// MIT License
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//
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// This example shows how to use DeserializationOption::Filter
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//
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// https://arduinojson.org/v7/example/filter/
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#include <ArduinoJson.h>
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void setup() {
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// Initialize serial port
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Serial.begin(9600);
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while (!Serial)
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continue;
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// The huge input: an extract from OpenWeatherMap response
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auto input_json = F(
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"{\"cod\":\"200\",\"message\":0,\"list\":[{\"dt\":1581498000,\"main\":{"
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"\"temp\":3.23,\"feels_like\":-3.63,\"temp_min\":3.23,\"temp_max\":4.62,"
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"\"pressure\":1014,\"sea_level\":1014,\"grnd_level\":1010,\"humidity\":"
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"58,\"temp_kf\":-1.39},\"weather\":[{\"id\":800,\"main\":\"Clear\","
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"\"description\":\"clear "
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"sky\",\"icon\":\"01d\"}],\"clouds\":{\"all\":0},\"wind\":{\"speed\":6."
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"19,\"deg\":266},\"sys\":{\"pod\":\"d\"},\"dt_txt\":\"2020-02-12 "
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"09:00:00\"},{\"dt\":1581508800,\"main\":{\"temp\":6.09,\"feels_like\":-"
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"1.07,\"temp_min\":6.09,\"temp_max\":7.13,\"pressure\":1015,\"sea_"
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"level\":1015,\"grnd_level\":1011,\"humidity\":48,\"temp_kf\":-1.04},"
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"\"weather\":[{\"id\":800,\"main\":\"Clear\",\"description\":\"clear "
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"sky\",\"icon\":\"01d\"}],\"clouds\":{\"all\":9},\"wind\":{\"speed\":6."
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"64,\"deg\":268},\"sys\":{\"pod\":\"d\"},\"dt_txt\":\"2020-02-12 "
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"12:00:00\"}],\"city\":{\"id\":2643743,\"name\":\"London\",\"coord\":{"
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"\"lat\":51.5085,\"lon\":-0.1257},\"country\":\"GB\",\"population\":"
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"1000000,\"timezone\":0,\"sunrise\":1581492085,\"sunset\":1581527294}}");
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// The filter: it contains "true" for each value we want to keep
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JsonDocument filter;
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filter["list"][0]["dt"] = true;
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filter["list"][0]["main"]["temp"] = true;
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// Deserialize the document
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JsonDocument doc;
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deserializeJson(doc, input_json, DeserializationOption::Filter(filter));
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// Print the result
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serializeJsonPretty(doc, Serial);
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}
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void loop() {
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// not used in this example
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}
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// See also
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// --------
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//
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// https://arduinojson.org/ contains the documentation for all the functions
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// used above. It also includes an FAQ that will help you solve any
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// deserialization problem.
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//
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// The book "Mastering ArduinoJson" contains a tutorial on deserialization.
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// It begins with a simple example, like the one above, and then adds more
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// features like deserializing directly from a file or an HTTP request.
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// Learn more at https://arduinojson.org/book/
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// Use the coupon code TWENTY for a 20% discount ❤❤❤❤❤
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