post with variable values

[mateusguilhermedasilva]

Hello

how to send a post using values from a variable?

for example:

client.postAsync("https://httpbin.org/post", "{"sensor": ""+(String)valueOfSensor+""}");

thanks

[imrehorvath]

Hello,

For a simple case you can try the following:

String data = "{\"sensorValue\":\"";
data += valueOfSensor;
data += "\"}";
client.postAsync("https://httpbin.org/post", data.c_str());

However if your data is more complex, you can try using the ArduinoJson library to serialize your JSON document.

Please note as of v3.2.0, you can use String in the API. So, you may omit the .c_str(), eg.:

String data = "{\"sensorValue\":\"";
data += valueOfSensor;
data += "\"}";
client.postAsync("https://httpbin.org/post", data);