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Get JSON data from URL into field form via button

Community Beginner ,
Jan 06, 2023 Jan 06, 2023

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Hello,
I have seen similar topics but none seem to fit to my case. So I would like to fetch a JSON array from a web application in our local network once a button gets triggered by a user. Then the JS should write a value from that JSON array into a field on the PDF. Unfortunately it does not work. I have tested the code inside VSCode and it works fine there... What am I missing? Any help appreciated.

app.beginPriv();

fetch("http://domainXYZ/ajax/server_processing.php")
.then(response => response.json())
.then(data => {

const theData = data[0];

var dataConv = eval("(" + theData[0] + ")");

var FName = dataConv.Firstname;
});

this.getField('1').value = FName;

app.endPriv();

TOPICS
Create PDFs , JavaScript , PDF forms

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correct answers 1 Correct answer

Community Expert , Jan 06, 2023 Jan 06, 2023

There is no "fetch" function in the Acrobat JavaScript model.  

However, there is an "HTTP.Net" object that can be used to perform HTTP operations.

https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/JS_API_AcroJS.html#net-http

 

It cannot be used from a document script. The only internet access from within an untrusted document context is the form submit.  

https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/doc.html#submitform

 

It's always helpful to look at the ac

...

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Community Expert ,
Jan 06, 2023 Jan 06, 2023

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Check the Javascript console for errors.

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LEGEND ,
Jan 06, 2023 Jan 06, 2023

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I'm not at all convinced you can use the Promise API in Acrobat. Have you just lifted this code from browser JavaScript? Adobe Acrobat Javascript Promises - Stack Overflow

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Community Expert ,
Jan 06, 2023 Jan 06, 2023

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LATEST

There is no "fetch" function in the Acrobat JavaScript model.  

However, there is an "HTTP.Net" object that can be used to perform HTTP operations.

https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/JS_API_AcroJS.html#net-http

 

It cannot be used from a document script. The only internet access from within an untrusted document context is the form submit.  

https://opensource.adobe.com/dc-acrobat-sdk-docs/library/jsapiref/doc.html#submitform

 

It's always helpful to look at the actual documentation.

 

 

Thom Parker - Software Developer at PDFScripting
Use the Acrobat JavaScript Reference early and often

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