GetJsonDomContent
Using GetContent, the response from an HTTP server is saved in a variable. If the received message is a JSON string, it can be saved in a JSON object to use the functions of the PLC library Tc3_JsonXml.
The GetJsonDomContent method saves the response directly in a JSON object. This skips the string conversion step. To be able to read the content of an HTTP response, the bBusy output of the function block FB_IotHttpRequest must return FALSE.
Syntax
METHOD GetJsonDomContent : SJsonValue
VAR_INPUT
fbJson : REFERENCE TO FB_JsonDomParser;
END_VAR
Return value
Name | Type | Description |
|---|---|---|
GetJsonDomContent | SJsonValue | JSON root node to start parsing. |
Inputs
Name | Type | Description |
|---|---|---|
fbJson | REFERENCE TO FB_JsonDomParser | The instance of the JsonDomParser that is to be used to parse the JSON object. |