问题
I need to get parameters from DialogFlow to my Android app.
I tried using getQueryResult().getParameters().getFieldsMap()
but the result is the following.
{type=list_value {
values {
string_value: "pizza"
}
}
, ristorante=string_value: ""
}
I would like to get just the string value "pizza" and not the entire FieldMap. I have already seen this topic, but it didn't help me, because I don't know what protobuf is and seems a bit complicated.
Is there a simple way to get a parameter's value?
回答1:
I see two possibilities:
- Try to access the Map values directly.
The getFieldsMap() method returns a java.util.Map class. You can try to retrieve the values by getting first a collection of Values, then iterate:
Collection colletion = <Detect_Intent_Object>.getQueryResult().getParameters().getFieldsMap().values():
for (iterable_type iterable_element : collection)
From my humble point of view the bucle is necesary because there could be more than one parameter.
- Transform the protobuf response into a json and access the values.
Sample code:
import com.google.protobuf.util.JsonFormat;
String jsonString = JsonFormat.printToString(<Detect_Intent_Object>.getQueryResult().getParameters());
// Then use a json parser to obtain the values
import org.json.*;
JSONObject obj = new JSONObject(jsonString);
JSONArray jsonnames = obj.names();
Method names()
will let you know the string names you want to access.
回答2:
If you use Dialogflowv2
public String getParameter(GoogleCloudDialogflowV2WebhookRequest request, String parameterName) {
try {
GoogleCloudDialogflowV2QueryResult queryResult = request.getQueryResult();
Map<String, Object> parameters = queryResult.getParameters();
String parameter = (String) parameters.get(parameterName);
if(parameter != null && !parameter.equals("")) {
return parameter;
}
} catch (ClassCastException e) {
logger.error("Error");
}
return null;
}
If you use GoogleActions
public String getParameter(ActionRequest request, String parameterName) {
try {
Map<String, Object> parameters = request.getWebhookRequest().getQueryResult().getParameters();
String parameter = (String) parameters.get(parameterName);
if(parameter != null && !parameter.equals("")) {
return parameter;
}
} catch (ClassCastException e) {
logger.error("Error");
}
return null;
}
来源:https://stackoverflow.com/questions/64651027/how-to-get-parameters-from-dialogflow-in-java-android-studio