topic Re: Web AppBuilder Print widget and Layers in Web AppBuilder Custom Widgets Questions

Web AppBuilder Print widget and Layers

FlorianCADOZ — Thu, 28 Apr 2016 14:42:47 GMT

Hi everyone,

I've got a problem with the print widget ! When I try to "print" a pdf (or something else) the graphicLayers are shown but not the Layers...

When I use a proxy, layer are just forgotten, and when i tried without, i get an error (screen joined)

I really have no idea how to do ...

Thank you in advance

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Fri, 29 Apr 2016 10:27:34 GMT

Florian,

Do you see errors in the browsers web console? Have setup the serverUrl(s) for the map service machines that the print uses?

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Mon, 02 May 2016 08:58:51 GMT

Hello Robert,

No error in the console but the problem doesn't come with the imported graphicsLayer. So I guess this occurs because of the HTTPS of the queried services I try to print and that are displayed as Layers.

"Have setup the serverUrl(s) for the map service machines that the print uses?"

hun ... I didn't know that I have to configure something in the print widget... What should I do exactly ?

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Mon, 02 May 2016 12:57:07 GMT

Florian,

Did you set the serverUrls in the proxy.config to use https in their url? Is you print service using http or https?

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Mon, 02 May 2016 13:54:48 GMT

Robert,

huuum .. no, i didn't do anything like that ...
I'm discovering the associated doc : Use proxy—Web AppBuilder for ArcGIS | ArcGIS

I didn't need that until now !

So I have to modify the main config.json with a print service url and the config.json of the print widget ?

I my happiness could be there ? Print Widget not working for layers that require a proxy url

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Mon, 02 May 2016 14:44:09 GMT

Florain,

I was not saying that you need to secure your print service. Actually if you do secure your print service you will have another issue. I was just asking if your had already secured your print service as that is a big issue.

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Mon, 02 May 2016 15:11:36 GMT

Oh ... a ... I really don't know ...
The URL that seems to be used is this one : https://utility.arcgisonline.com/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task/execute

But I don't know where I have to setup this url !

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Mon, 02 May 2016 15:33:28 GMT

Florian,

So it looks like the first thing you need to do is configure the print widget to use your own print service instead of the generic esri utilities one.

Re: Web AppBuilder Print widget and Layers

RickeyFight — Mon, 02 May 2016 15:51:18 GMT

Florian,

Until you get yours up and running, you could use this one.

https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task

Re: Web AppBuilder Print widget and Layers

RebeccaStrauch__GISP — Mon, 02 May 2016 17:07:12 GMT

For printing, I usually have to set up a proxy, although it is basically an "empty" proxy. it has to do with the length of what needs to be sent (push vs get?)

this is an older thread, can't find the one I wanted, but I have some info javascript Print Secured Service

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Sun, 12 Dec 2021 08:37:33 GMT

Hi everyone and thank you for your answers but :

- I -

I tried with the sample print service and I had the same problem that I had with the first arcgis service that was configured ! (see attached image below)

- II -

After I tried with my own print service located on my server but it doesn't work to ...

And in the console, I've got that message :

Can you confirm me that the only thing I've to do is to set the url of the print service in the config.json of my print widget like that ?

{
  "serviceURL": "https://urlOfMyServer:portUsed/arcgis/rest/services/Utilities/PrintingTools/GPServer",
  "defaultTitle": "ArcGIS Web Map",
  "defaultAuthor": "Web AppBuilder for ArcGIS",
  "defaultCopyright": "",
  "defaultFormat": "PDF",
  "defaultLayout": "Letter ANSI A Landscape"
}

Thank you by advance for your answer !

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Tue, 03 May 2016 12:54:40 GMT

Florian,

You set the print widgets url in the Settings UI for the print widget (no need to edit json manually). Your print server url should look like this:

protocol://urlOfMyServer/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export Web Map Task

You would use the port number in the above url if you do not have ArcGIS Web Adaptor installed (not sure why you would not though).

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Tue, 03 May 2016 13:23:40 GMT

Robert,

Oh ! I forgot the "Export Web Map Task" in the end of the URL...

But the problem seems to be elsewhere ! In fact, the print widget works fine but only when I ask him to export a small number of elements ...

Is there a way around this limitation, or is it that it is required for ArcGIS Server and there is nothing to do there?

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Tue, 03 May 2016 13:30:53 GMT

Florian,

The whole purpose of using the proxy is to get past that limit as Rebecca was mentioning. So are you testing on a deployed WAB app (meaning you have deployed it to your web server)? If so then did you add the proxy url to your apps main config.json?

Re: Web AppBuilder Print widget and Layers

FlorianCADOZ — Wed, 04 May 2016 15:06:33 GMT

Hello Robert,

Yes, I'm developping on WAB DE and i deployed an app on my own server but for the part of the proxy, I didn't do anything by myself. It's a colleague which done this job and after I didn't config the proxy's parameters in the main config.json...

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Wed, 04 May 2016 15:22:56 GMT

Florian,

So make sure that you have added the proxy url to the main config.json for your app then.

Re: Web AppBuilder Print widget and Layers

BarnabyRockwell — Thu, 05 May 2016 21:31:07 GMT

Robert and Rebecca,

I think that I am having the same problem with printing from a WAB Dev 1.3 app. Perhaps you could help. My setup:

Public-facing IIS server (behind enterprise reverse proxy), url = http://public.gov
ArcGIS for Server 10.4 + Web Adaptor are running on it. No Portal.
This machine has another name on our internal network, I will use http://intserver.xx.xxy.net.
The Web Adaptor is configured thus: http://intserver.xx.xxy.net:6080.
Given what was written in this thread, I set up a local proxy on web site: /prox/proxy.ashx
In config.json of WAB app, I entered:

"httpProxy":{"useProxy":true,"alwaysUseProxy":false,"url":"/prox/","rules":[{

"urlPrefix": "http://public.gov/arcgis/rest/services/Utilities/PrintingTools/", ****I tried many things for this, to no avail******

"proxyUrl": "/prox/proxy.ashx"

}]},

config_Print.json in my app:

{

"serviceURL": "http://public.gov/arcgis/rest/services/Utilities/PrintingTools/GPServer/Export%20Web%20Map%20Task",

"defaultTitle": "ArcGIS Web Map",

"defaultAuthor": "blah blah",

"defaultCopyright": "",

"defaultFormat": "PDF",

"defaultLayout": "Letter ANSI A Landscape"

}

My /prox/proxy.config. I also tried an "empty" one as Rebecca suggested, but that didn't work, either.

<?xml version="1.0" encoding="utf-8" ?>

<ProxyConfig allowedReferers="*"

mustMatch="false"> *****also tried true here - didn't work*******

<serverUrl url="http://services.arcgisonline.com"

matchAll="true"/>

<serverUrl url="http://public.gov" *****I also tried the entire serviceURL from the config_Print.json shown above - didn't work******

matchAll="true"/>

<serverUrl url="http://myorg.maps.arcgis.com"

matchAll="true"/>

<serverUrl url="http://utility.arcgisonline.com"

matchAll="true"/>

<serverUrl url="http://intserver"

matchAll="true"/>

</serverUrls>

</ProxyConfig>

What am I doing wrong? Even without a proxy set up, I get an error like Florian did, "Unable to load" the long print url, which is about ~1800 characters long. I wonder if my problem is related to the enterprise reverse proxy, which could be blocking requests...... I have no idea.

Thanks in advance,

Barnaby

Re: Web AppBuilder Print widget and Layers

RobertScheitlin__GISP — Sun, 12 Dec 2021 08:37:35 GMT

Barnaby,

I do not have a specific rule setup in my main config.json for the print service. Mine just looks like this:

"httpProxy": {
    "useProxy": true,
    "alwaysUseProxy": false,
    "url": "/WAB/Proxy/proxy.ashx",
    "rules": []
  }

Re: Web AppBuilder Print widget and Layers

BarnabyRockwell — Fri, 06 May 2016 16:03:24 GMT

Ok, thanks, Robert. I'll try that. I've also contacted our reverse proxy security people to see if the print command is being blocked by them....

Cheers,

Barnaby

P.S.: With your suggestion, and the removal of a security blockage by reverse proxy people, the printing works perfectly now! 🙂