Unigui Calling Web Services or API

[soon]

Hi all, im new to UNIGUI

 

Can anyone provide a sample of how does Unigui client call API/web services with parameters and read the returned JSON data list and display in grid ?

 

thank you

[Ron]

I don't have an example right now, but a web service is basically just an HTTP server,

so use any HTTP client and make a call, and read the result, XML or JSON....parse it,

push it into a table and refresh the query linked to your grid, and there you have it.

 

I like using the Indy components, the HTTP client is blocking, so use a thread if you

have to, but it is very easy to set up and there are tons of examples on the net.

[soon]

I don't have an example right now, but a web service is basically just an HTTP server,

so use any HTTP client and make a call, and read the result, XML or JSON....parse it,

push it into a table and refresh the query linked to your grid, and there you have it.

 

I like using the Indy components, the HTTP client is blocking, so use a thread if you

have to, but it is very easy to set up and there are tons of examples on the net.

Do you mean TIdHTTP ?

[Ron]

@soon: yes, the indy http client.

 

Below is a function I previously used to send SMS via a phone operator web service, using http.get and no ssl:

 

function TuniMainModule.SendSMS(number, msg:string):string;

const

  cUSER_AGENT = 'Mozilla/4.0 (MSIE 6.0; Windows NT 5.1)';

var

 httpResponse: string;

 Stream: TStringStream;

 URL, telParams:string;

 HTTP:TidHTTP;

begin

  URL:='http://admin.telefonkatalogen.no/smsgateway/sendSms?sender='+shortNumber+'&targetNumbers='+number+'&sms='+encodeMessage(msg)+'&userName='+Username+'&password='+tSmsPw;

  Stream := TStringStream.Create;

  HTTP:=TIdHTTP.Create(nil);

  HTTP.ReadTimeout := 10000;{ IdTimeoutInfinite; }

  HTTP.ConnectTimeout := 10000;

  try

    HTTP.Request.UserAgent := cUSER_AGENT;

    try

      HTTP.Get(URL, Stream);

      result:= Stream.DataString;

    except

      result:= 'SMS Error!';

    end;

  finally

    Stream.Free;

    HTTP.Free;

  end;

end;

 

If you want basic http auth then add:

 

HTTP.Request.BasicAuthentication:=true;

HTTP.Request.Username:=username;

HTTP.Request.Password:=pw;

 

If you need SSL, add:

 

var

LHandler: TIdSSLIOHandlerSocketOpenSSL;

...

try

LHandler := TIdSSLIOHandlerSocketOpenSSL.Create(nil);

...

HTTP.IOHandler:=LHandler;

finally

LHandler.Free;

 

etc.

 

If you need to POST, use HTTP.Post(url, aParams, aResponse);

 

Notice: using GET you have to think about encoding, since this is

part of the URL, but when using POST there is no worry about that.

[soon]

@soon: yes, the indy http client.

 

Below is a function I previously used to send SMS via a phone operator web service, using http.get and no ssl:

 

function TuniMainModule.SendSMS(number, msg:string):string;

const

  cUSER_AGENT = 'Mozilla/4.0 (MSIE 6.0; Windows NT 5.1)';

var

 httpResponse: string;

 Stream: TStringStream;

 URL, telParams:string;

 HTTP:TidHTTP;

begin

  URL:='http://admin.telefonkatalogen.no/smsgateway/sendSms?sender='+shortNumber+'&targetNumbers='+number+'&sms='+encodeMessage(msg)+'&userName='+Username+'&password='+tSmsPw;

  Stream := TStringStream.Create;

  HTTP:=TIdHTTP.Create(nil);

  HTTP.ReadTimeout := 10000;{ IdTimeoutInfinite; }

  HTTP.ConnectTimeout := 10000;

  try

    HTTP.Request.UserAgent := cUSER_AGENT;

    try

      HTTP.Get(URL, Stream);

      result:= Stream.DataString;

    except

      result:= 'SMS Error!';

    end;

  finally

    Stream.Free;

    HTTP.Free;

  end;

end;

 

If you want basic http auth then add:

 

HTTP.Request.BasicAuthentication:=true;

HTTP.Request.Username:=username;

HTTP.Request.Password:=pw;

 

If you need SSL, add:

 

var

LHandler: TIdSSLIOHandlerSocketOpenSSL;

...

try

LHandler := TIdSSLIOHandlerSocketOpenSSL.Create(nil);

...

HTTP.IOHandler:=LHandler;

finally

LHandler.Free;

 

etc.

 

If you need to POST, use HTTP.Post(url, aParams, aResponse);

 

Notice: using GET you have to think about encoding, since this is

part of the URL, but when using POST there is no worry about that.

ok, thank you so much for your help