HttpRequest receive or send data by methods
GET or
POST
This preconfiguration can be activated when creating a new object (e.g. by
"New object ..." in the local object menu or by pressing the
Insert key after selecting the object) and is included in the group:
"/ Communication / Protocols and other communications / HTTP - XML, JSON, CSV, SOAP, text".
This preconfiguration can be created in the object:
PmaFolder or
PmaRoot.
- The preconfiguration is created including the panel (object of the
PmaPanel type) is functional also as
Web panel.
The
PmaFolder object has the
RequestGet and
RequestPost methods for initialization of the communication. Each of this methods calls the
Add method of the
PmaSequencer object, where in the
second prarameter the communication method is defined (GET or POST) and in the
third parameter the
URL address of the source is defined and in the
fourth parameter (for the POST method) there is the send data content. Additional methods
ReplyXml,
ReplyTxt and
ReplyCsv are used for processing the received data based on reply type.
Testing panel
PmaPanel allows to run methods
RequestGet or
RequestPost and display unprocessed received data.
The
PmaSequencer object is configured in order to have each communication running outside the main working thread of the PROMOTIC application. In the
onStep event, there is an ActiveX
Microsoft.XMLHTTP object that gets the corresponding parameters for synchronous mode communication by the
open method. The
"send" method follows and receives or sends the data. The received data can be then processed as needed. The transmission is terminated by the
abort method.
These configurators can be set before the preconfiguration is created:
| The name of created object | Name of the object created in the Pma objects tree. The maximum name length is 30 characters. This is a system name, so it must contain only alphanumeric and must not contain any diacritics (i.e. national dependent characters), empty string, spaces and the first character must not be a number.
Default: "HttpRequest" |
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|
| Data receive (GET) | |
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| URL address for receiving data (GET) | Network or local address of data source, for example in the form: http://localhost/data/exam.xml |
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| Data processing method |
XML - parser (default)
Text
CSV - file |
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|
| Data sending (POST) | |
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| URL address for sending data (POST) | Network or local address of data source, for example in the form: http://localhost/data/exam.xml |
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| Create test panel | Creates panel used for communication testing and displaying of received data |
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