Uploading File to AEM DAM

[vishalk87673574]

I am working on a Project to upload files to AEM DAM through Java API. So was going through this tutorial to upload files in DAM.

"Adobe Experience Manager Help | Uploading files to Adobe Experience Manager DAM using AssetManager A... "

But I am not able to get this code check as I am getting “Null Pointer Exception” @ ResourceResolver resourceResolver = resolverFactory.getAdministrativeResourceResolver(null);

Pasting the code as well which I am writing, just to let you know AEM is running on a different server and I am trying to connect to that server from my local, Idea is to deploy it as a Rest API in a different server from AEM.

Thanks in advance any help will be appreciated.

@Reference

       private static ResourceResolverFactory resolverFactory;

       public static void main(String[] args) {

//InputStream is =null;

try{

File initialFile = new File("C:/Users/502719757/Desktop/DOC0928611r8VCT_750HD_RevDis.pdf");

InputStream targetStream = new FileInputStream(initialFile);

String fileName = "DOC0928611r8VCT_750HD_RevDis.pdf";

String path = "http://uswaupmcvms01l.am.health.ge.com:8001/content/dam/travel";

String mimetype= null;

writeToClientLib(targetStream,fileName,path,mimetype);

}

catch(Exception e){

}

       }

       //

       private static String writeToClientLib(InputStream is, String fileName, String path, String mimetype)

       {

       try

       {

//Inject a ResourceResolver

ResourceResolver resourceResolver = resolverFactory.getAdministrativeResourceResolver(null);

//Use AssetManager to place the file into the AEM DAM

com.day.cq.dam.api.AssetManager assetMgr = resourceResolver.adaptTo(com.day.cq.dam.api.AssetManager.class);

String newFile = path+fileName ;

assetMgr.createAsset(newFile, is, mimetype, true);

// Return the path to the document that was stored in CRX.

return newFile;

       }

       catch(Exception e)

       {

e.printStackTrace();

System.out.println(e);

       }

       return null;

       }

[zeeshanKhan0786 · Accepted solution]

Hi Vishal,

ResourceResolver resourceResolver = resolverFactory.getAdministrativeResourceResolver(null); has been diprecated .

You can get service mapping go through below will help

Service Users in AEM | Adobe AEM Club

AEM6: ResourceResolver access in services - WE ARE INSIDE

[vishalk87673574]

Thanks for replying.

I cannot see this method is allowed with resolverFactory.

Only two methods are allowed to be used with this

1)getResourceResolver(null);

2)getAdministrativeResourceResolver(null);

I am using org.apache.sling.api-2.4.0 version of jar, please suggest

[zeeshanKhan0786]

You don't need to get resolverFactory you have required only resource for getting AssetManager object.

resourceResolver.adaptTo(com.day.cq.dam.api.AssetManager.class);

for getting resorceResolver follow the below Step you have to get resourceResolver using Service.

AEM6: ResourceResolver access in services - WE ARE INSIDE

[vishalk87673574]

Hi Zeeshan,

I am missing a point here and not able to understand.

On that link too we are using resolverFactory to get the resourceResolver, my problem is I am not getting any such method getServiceResourceResolver() to call on resolverFactory.

Map<String, Object> param = new HashMap<String, Object>();

param.put(ResourceResolverFactory.SUBSERVICE, "writeService");

ResourceResolver resolver = null;

try {

ValueMap readMap = res.getValueMap();

log.info(readMap.get("jcr:primaryType", ""));

ModifiableValueMap modMap = res.adaptTo(ModifiableValueMap.class);

[Kyaw_Zwa_Myint]

I am working on a Project to upload files to AEM DAM through Java API. So was going through this tutorial to upload files in DAM. "Adobe Experience Manager Help | Uploading files to Adobe Experience…

[Kyaw_Zwa_Myint]

ResourceResolver resourceResolver = resolverFactory.getAdministrativeResourceResolver(null); has been diprecated .

You can get service mapping go through below will help

[Kyaw_Zwa_Myint]

resolver = resolverFactory.getServiceResourceResolver(param);

log.info(resolver.getUserID());

Resource res = resolver.getResource("/content/mydata/jcr:content");

[zeeshanKhan0786]

your are already using annotation @Reference to inject the ResourceResolverFactory in your code.

@Reference

private static ResourceResolverFactory resolverFactory;

Create a write Service in AEM and put that service name in the "NAME of Your Write Service" in the code . for create service mapping follow the steps of the url Service Users in AEM | Adobe AEM Club

After creating the writeService and mapping with bundle.Below is your modified code in writeToClientLib.

   private static String writeToClientLib(InputStream is, String fileName, String path, String mimetype)

       {

       try

       {

               Map<String, Object> param = new HashMap<String, Object>();

               //Please put your service name in place of NAME of Your Write Service

               param.put("NAME of Your Write Service" "writeService");

               ResourceResolver resolver = null;

          resolver = resolverFactory.getServiceResourceResolver(param);

//Use AssetManager to place the file into the AEM DAM

com.day.cq.dam.api.AssetManager assetMgr = resolver.adaptTo(com.day.cq.dam.api.AssetManager.class);

String newFile = path+fileName ;

assetMgr.createAsset(newFile, is, mimetype, true);

// Return the path to the document that was stored in CRX.

return newFile;

       }

       catch(Exception e)

       {

e.printStackTrace();

System.out.println(e);

       }

       return null;

       }

[vishalk87673574]

Now it is making sense to me, and sorry to bug you again. I will try to create a service and mapping for a user in AEM.

But the point which I was making in I am not able to see that method getServiceResourceResolver(map) in the recommendations and when I am using it, code is throwing error. Not sure how creating a service and mapping in AEM will effect this piece of code.

Please Suggest.

[viveksachdeva]

As per the documentation, it is available since v 2.4.. What you can do is :

- Open http://localhost:4502/system/console/depfinder

- Search for org.apache.sling.api.resource

- You will see the dependency. Include it in your POM..

- Import maven dependencies again and then check

[smacdonald2008]

This is for AEM Versions Experience Manager 5.5, 5.6, 6.0, 6.1. In the correct version - you need to use a System user and the Sling Mapping Service. TO learn how to do this -- see this article:

Scott's Digital Community: Querying Adobe Experience Manager 6 data using the Sling getServiceResour...

[smacdonald2008]

We will update that article to show use of this in AEM 6.3.

[vishalk87673574]

Thanks smacdonald2008 for your suggestions.

Just wanted to be sure I am following the correct approach.

I am deploying an application(may be Rest API) on a different server and AEM is running on a different server.

With this API I want to upload some files to AEM repository(DAM), would this be the efficient method or is there any other way of doing this?

[smacdonald2008]

You can use Restful method to upload an asset to AEM - see:

Scott's Digital Community: Creating Java Swing applications that post files to AEM ClientLibs folder...

This uses an sample Java Swing client to send a POST to a sling servlet - the only thing you need to change is use System user and Sling Mapping as opposed to the Admin login call.

[Kyaw_Zwa_Myint]

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[Kyaw_Zwa_Myint]

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