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Resource mapping is used to define redirects, vanity URLs and virtual hosts for AEM.

For example, you can use these mappings to:

  • Prefix all requests with /content so that the internal structure is hidden from the visitors to your website.
  • Define a redirect so that all requests to the /content/en/gateway page of your website are redirected to http://gbiv.com/.

One possible HTTP mapping prefixes all requests to localhost:4503 with /content. A mapping like this could be used to hide the internal structure from the visitors to the website as it allows:

localhost:4503/content/geometrixx/en/products.html

to be accessed using:

localhost:4503/geometrixx/en/products.html

as the mapping will automatically add the prefix /content to /geometrixx/en/products.html.

Varoitus:

Vanity URLs do not support regex patterns.

Huomautus:

See the Sling documentation, and Mappings for Resource Resolution and Resources for further information.

Viewing Mapping Definitions

The mappings form two lists that the JCR Resource Resolver evaluates (top-down) to find a match.

These lists can be viewed (together with configuration information) under the JCR ResourceResolver option of the Felix console; for example, http://<host>:<port>/system/console/jcrresolver:

  • Configuration
    Shows the current configuration (as defined for the Apache Sling Resource Resolver).
  • Configuration Test
    This allows you to enter a URL or resource path. Click Resolve or Map to confirm how the system will transform the entry.
  • Resolver Map Entries
    The list of entries used by the ResourceResolver.resolve methods to map URLs to Resources.
  • Mapping Map Entries
    The list of entries used by the ResourceResolver.map methods to map Resource Paths to URLs.

The two lists show various entries, including those defined as defaults by the application(s). These often aim to simplify URLs for the user.

The lists pair a Pattern, a regular expression matched to the request, with a Replacement that defines the redirection to impose.

For example, the:

Pattern ^[^/]+/[^/]+/welcome$

will trigger the:

Replacement /libs/cq/core/content/welcome.html.

to redirect a request:

http://localhost:4503/welcome

to:

http://localhost:4503/libs/cq/core/content/welcome.html

New mapping definitions are created within the repository.

Huomautus:

There are many resources available that help explain how to define regular expressions; for example http://www.regular-expressions.info/.

Creating Mapping Definitions in AEM

In a standard installation of AEM you can find the folder:

/etc/map/http

This is the structure used when defining mappings for the HTTP protocol. Other folders (sling:Folder) can be created under /etc/map for any other protocols that you want to map.

Configuring an Internal Redirect to /content

To create the mapping that prefixes any request to http://localhost:4503/ with /content:

  1. Using CRXDE navigate to /etc/map/http.
  2. Create a new node:
    • Type sling:Mapping
      This node type is intended for such mappings, though its use is not mandatory.
    • Name localhost_any
  3. Click Save All.
  4. Add the following properties to this node:
    • Name sling:match
      • Type String 
      • Value localhost.4503/
    • Name sling:internalRedirect
      • Type String
      • Value /content/
  5. Click Save All.

This will handle a request such as:
         localhost:4503/geometrixx/en/products.html
as if:
        localhost:4503/content/geometrixx/en/products.html
had been requested.

Huomautus:

See Resources in the Sling Documentation for further information about the sling properties available and how they can be configured.

Huomautus:

You can use /etc/map.publish to hold the configurations for the publish environment. These must then be replicated, and the new location (/etc/map.publish) configured for the Mapping Location of the Apache Sling Resource Resolver of the publish environment.

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