I need to create a post method that returns this information to the Messenger API with Spring Boot, if anyone can give a light thanks.
The example below is found in the Facebook Developers documentation
curl -X POST -H "Content-Type: application/json" -d '{
"messaging_type": "<MESSAGING_TYPE>",
"recipient": {
"id": "<PSID>"
},
"message": {
"text": "hello, world!"
}
}' "https://graph.facebook.com/v2.6/me/messages?access_token=<PAGE_ACCESS_TOKEN>"
You need the class RestTemplate , of the Spring Boot. It allows you to perform HTTP requests very easily.
For this request, you need 3 things: the headers, the json with the data, the URL to be called. To create json, add the following dependency to your project:
compile group: 'org.json', name: 'json', version: '20180130'
Here is the commented code:
public void post(String token) {
String url = "https://graph.facebook.com/v2.6/me/messages?
access_token=".concat(token);
//setando o header da requisição. Veja se a documentação pede algum
//outro header além desse e adicione, se necessário
HttpHeaders httpHeaders = new HttpHeaders();
httpHeaders.setContentType(MediaType.APPLICATION_JSON);
//Montando o json esperado pelo Facebook
JSONObject json = new JSONObject();
json.put("messaging_type", "Algum valor aqui");
JSONObject id = new JSONObject();
id.put("id", "valor do ID aqui");
json.put("recipient", id);
JSONObject text = new JSONObject();
text.put("text", "hello, world!");
json.put("message", text);
//Criando o objeto que representa a requisição a ser enviada
HttpEntity <String> httpEntity = new HttpEntity <String> (json.toString(), httpHeaders);
RestTemplate restTemplate = new RestTemplate();
//Chamada propriamente dita, com a resposta do Facebook mapeada para uma String
String response = restTemplate.postForObject(url, httpEntity, String.class);
}
By printing the json that was mounted, we have this result:
{
"messaging_type": "Algum valor aqui",
"recipient": {
"id": "valor do ID aqui"
},
"message": {
"text": "hello, world!"
}
}