Web AppBuilder Print widget and Layers

[FlorianCADOZ]

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

[FlorianCADOZ]

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 !

[RobertScheitlin__GISP]

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).

[FlorianCADOZ]

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?

[RobertScheitlin__GISP]

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?

[FlorianCADOZ]

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...

[RobertScheitlin__GISP]

Florian,

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

[BarnabyRockwell]

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*******

    <serverUrls>

        <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

[RobertScheitlin__GISP]

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": []
  }

[BarnabyRockwell]

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!  🙂