Sling servlet ranking 4 component property type annotations for Sling servlets and filters Oct 30, 2018 · I want to fetch the properties in OSgi Service like userName , which is set in request parameter in a my custom SlingServlet ? Anyone has an idea about how to achieve this task ? I have one RegisterUserSlingServlet class and CustomMailService as OSGi service. In this post, we will take our discussion further and see how can we create servlets using . A special format string ISO8601 is supported to indicate the string to be parsed as a JCR standard string representation of a Date property. dateFormats takes a list of format strings which are used to setup java. I checked the source code for the implementation to see how its developed. Filter is an interface belongs to javax. OOTB Servlet is not using any service ranking, so you can create servlet using service ranking and then always your servlet will get called. class, property = { "sling. ranking=700 0 : class my. sling</groupId> <artifactId>org. ranking higher than the one from the Sling Main servlet (= 0). May 5, 2025 · Resource and ResourceResolver Complete Guide in AEM Whenever we work with AEM, we are always dealing with content stored in the repository. Utilizing the built-in mechanisms effectively can significantly enhance performance. • To create a servlet, extend from one of the Sling servlet classes and annotate it as a @Component with Servlet service interface. resourceTypes service reference property must be set. Jul 4, 2019 · Sling supports filter processing by applying filter chains to the requests before actually dispatching to the servlet or script for processing. 4 (R7) component property type annotations, providing resourcetype, methods, and extensions, and using the ServiceDescription for the servlet. The Sling Main servlet context should use a lower ranking so that simple servlets registered via OSGI HTTP Whiteboard pattern without explicit context can kick in at all! Attached the web console of Sling Starter 12: Apache Sling Default GET Servlets Provides default GET servlets for HTML, Text and JSON rendering and streaming resources. For a Servlet registered as an OSGi service to be used by the Sling Servlet Resolver, either one or both of the sling. resolver:2. If neither is set, the Servlet service is ignored. Apache Sling Servlets Resolver Bundle implementing the Sling API ServletResolver. / src / main / java / org / apache / sling / servlets / annotations / SlingServletFilter. sling', module='org. When setting a non-String property value such as an Integer or Boolean, include the type such as service. Built on the Apache Sling framework, it is used to extend AEM Dec 10, 2022 · Service user mapping with the help of system user allows us to create a session or resource resolver object to access resource. - Migrating SlingPostServletTest to Junit4 - Creating an auxiliary SortedByRankingList class which stores elements by a given ranking - Storing all bound PostOperations by ranking and using the one with higher ranking - if no ranking is provided, order follows the behavior already established behavior: last Operation bound is used as default one. Oct 18, 2021 · Hi , yes, for your use case sling servlet filter is better option and go through the below url for latest annotation to create filter. And you specify the servlet that should render the content based on Sling Jun 13, 2023 · Switching to the Sling Servlet Resolver page and copying the path from the component detail page, clearly showing the path configured in the code, then switching to the POST method that the servlet is listening for, and the resolver cannot find a servlet to support that path. 0</version> </dependency> Include comment with link to declaration Yes, we can use the Sling Servlet Helpers bundle provides mock implementations of the SlingHttpServletRequest, SlingHttpServletResponse and related classes, along with fluent SlingInternalRequest and ServletInternalRequest helpers for internal requests. In a previous discussion, we outlined a step-by-step process for Accessing Component Policies in AEM at the Component Dialog Level, Sightly code, and Sling model. filter. @Grapes ( @Grab (group='org. Mar 22, 2025 · Create Servlet Launch your aem-banking project in IntelliJ. 6 Maven Gradle Gradle (Short) Gradle (Kotlin) SBT Ivy Grape Leiningen Buildr <!-- https://mvnrepository Mar 22, 2025 · An introduction to Sling, an open-source RESTful web framework that is part of Adobe Experience Manager's underlying technology stack. @Component (service = Servlet. Contribute to apache/sling-org-apache-sling-servlets-post development by creating an account on GitHub. Servlet interface and registers its reference. Was thinking if its possible to trigger custom servlet instead of existing servlet ootb for given paths/ resource type. methods are GET and HEAD. I want to create a single filter for all servlets where I need to verify the user for AEM user group access in the FILTER itself. author and /content/config nodes exist, and you do something like: Aug 18, 2022 · Order of filters is handled by sling ranking. Sling supports filter processing by applying filter chains to the requests before actually dispatching to the servlet or script for processing. resourceTypes or the @SlingServletResourceTypes annotation. With the use of a particular selector we can get results like list information Dec 11, 2017 · Sling provides enough functionality to map code to specific selectors without a need to check them directly. class) @Properties ( { - 203440 Oct 25, 2020 · 1. properties and JRE specific properties files. post. Jul 22, 2021 · @Grapes ( @Grab (group='org. 8 Maven Gradle Gradle (Short) Gradle (Kotlin) SBT Ivy Grape Leiningen Buildr <!-- https May 29, 2025 · In AEM, we use Sling Servlets to handle requests to specific paths, resources, or selectors. That leads to the fact that > the Sling Main servlet always takes precedence as > {quote} > In the case of two Servlet Context Helpers with the same path, the service > with the highest ranking is searched first for a match. Sling Models provide an easy way to achieve this, integrating into the already existing pattern and infrastructure provided by Sling. apache / sling-org-apache-sling-servlets-annotations / ab227381be2dc7b47dd4c1e691f7a7052c614400 / . This service request is also generated in the sling model. Apache Sling API The Apache Sling API defines an extension to the Jakarta Servlet API 6. This will invoke an API call and process the result in the sling model. paths or the sling. testing. Restoring Deleted May 18, 2020 · Abstract When working on an AEM project, Sling Models provides several custom Sling Models injectors to aid injection of Sling objects, Sling object values, OSGI services, etc… While using the injectors within in Sling Models, how do injectors invoke in order? Injectors are invoked in order, of their service ranking, from lowest to highest. 0 Up to and including Sling Engine 2. 4. For a Servlet registered as an OSGi service to be used by the Sling Servlet Resolver, the following restrictions apply: Either the sling. Users who cannot access a particular resource will not be able to invoke the servlet. 11. Sample Servlet The following servlet is bound to the Sling resource type: azure/fetchchoices Mar 2, 2019 · Hi, Is there any recommendation by AEM like when we have use path as well as resourceType while creating the Sling Servlet. servlet. resolver</artifactId> <version>2. Attaching servlet - 407155 The article covers creating a component service with a filter class, providing a service description, ranking, and vendor for the filter, and overriding the doFilter method to chain requests and add logs. 4) for Sling Servlet Filters. servlet-helpers', version='1. How to write Sling Servlet using a resource type and selector. // https://mvnrepository. Ranking Multiple Dynamic References in OSGi by Juan Ayala Abstract In AEM we tend to develop custom OSGi services that do small units of work. site. servlet-helpers --> <dependency> <groupId>org. In a nutshell, Sling maps HTTP request URLs to content resources based on the request's path, extension and selectors. 2</version> </dependency> Nov 7, 2021 · This article discusses the best practices for creating filters in Adobe Experience Manager (AEM). SLING_FILTER_SCOPE + "=REQUEST", EngineConstants. Sling Servlet that accepts GETs or POSTs) AEM Sling Filter allows to filter request before actually dispatching to the servlet or script for processing. ranking. Rather than addressing a servlet and specifying the content you would like the servlet to render based on the query parameters, you address the content that you want and specify the servlet that should render the content based on Sling selectors. id. Jan 13, 2023 · Mastering Servlet Creation in AEM: 4 Approaches and Best Practices In my previous article here, I wrote about different ways of creating Sling Models, the best practices & security around it. 0") Oct 18, 2021 · Hi @Karim_Onizuka , yes, for your use case sling servlet filter is better option and go through the below url for latest annotation to create filter. It must either extend SlingSafeMethodsServlet or SlingAllMethodsServlet Servlet can either be path based (tagged to a specific paths) or resource based (tagged to specific resource types). 8. extensions=js", "sling. resourceTypes and using selectors. 0 support for Servlet Filters has been as follows: Any javax. scope service registration property is required for a javax. ranking property Felix Meschberger (JIRA) Thu, 23 Apr 2015 23:21:07 -0700 Jul 25, 2020 · Howdy fellow devs 👋! In the previous post, we discussed concepts of Sling Servlets in AEM. I need to invoke this sling model inside a sling servlet c Apr 3, 2013 · Also note on sling/cq5 you can see which filters are active and their ranking by looking /system/console/config and Sling Servlet Filters. Sling Servlet Best Practices Pre-requisite:- You have setup you eclipse and code base. The higher the number the earlier in the filter chain. Using convention over configuration, requests are processed by scripts and servlets, dynamically selected based on the current resource. 14</version> <scope>provided</scope> </dependency> Include comment with link to declaration Jan 4, 2023 · Solved: I am trying to implement a Sling Servlet Filter which aims to be invoked when I upload any . resourceTypes. resolver', version='2. If he is part of XYZ group then allow him to access the original servlet and content. Dec 10, 2024 · A Sling Servlet is a server-side component in Adobe Experience Manager (AEM) that processes HTTP requests and generates responses. Syntax: @Component (property=Constants Jun 28, 2025 · Provides default GET servlets for HTML, Text and JSON rendering and streaming resources. Advantages of registering servlet using selector over path. I have tried to put a selector in proxy. sling/org. Feb 7, 2014 · SBT Ivy Grape Leiningen Buildr <!-- https://mvnrepository. Feb 25, 2023 · AEM Sling Filter allows to filter request before actually dispatching to the servlet or script for processing. Contribute to apache/sling-org-apache-sling-dynamic-include development by creating an account on GitHub. rankingproperty value (explicitly set or default value of zero) will be ordered according to theirservice. Filters to be used in such filter processing are plain OSGi services of type javax. 10. For instance, a request to /content/example will match the resource type example/components/content, which then resolves to the appropriate servlet. war or any derived Web Application archive file, the sling. 6') ) The Sling Main servlet context should use a lower ranking so that simple servlets registered via OSGI HTTP Whiteboard pattern without explicit context can kick in at all! Attached the web console of Sling Starter 12: That leads to the fact that > the Sling Main servlet always takes precedence as > {quote} > In the case of two Servlet Context Helpers with the same path, the service > with the highest ranking is searched first for a match. In Note: There is a new version for this artifact New Version 2. For some reason my filter is ranked 0 even though I set is as service. Jun 5, 2022 · Sling Servlet enables us to expose OSGI Service based on request - response model. They are mostly used for authentication of request, post processing of markup or adding/modifying some request parameters etc. Oct 18, 2021 · The solution I figured out, is to implement a Sling servlet filter, to intercept the request, if I have the suffix then I create a predicate and call the search model otherwise do nothing and proceed with normal processing. Filter service to be used as a filter by the Sling Engine. Indication of where to place the filter in the filter chain. label=Some Servlet Feb 6, 2017 · sling. Very strange. extensions). I have also tried the service. 1. Nov 29, 2013 · The TypeHint tells the Sling POST servlet to create a multi-value property for foo. java blob: 3db093d5456bd07ab64fc25bae384d8c138a69ba [file] [log] [blame] Home » org. java blob: 326a5eea36272fd2ac2b7a19d8d3ee36d6d9a26c [file] [log] [blame] Nov 5, 2019 · Hello, AEM Community I have the following issue: I want to create a servlet which works with the following properties: @Component( immediate = true, service = Servlet. I cannot add a node under /content/config. They allow developers to apply filter chain to the requests before they are actually dispatched to the default processing destination. But how exactly does AEM let us access things like pages … Sling servlets let you register your servlet in the opposite manner. We also saw how can we create a servlet using property. 0 to provide access to content and unified access to request parameters hiding the differences between the different methods of transferring parameters from client to server. May 9, 2025 · What are Sling Filters in AEM? Sling Filters are based on the Java Servlet Filter API and are registered as OSGi components in AEM. methods are only considered for the registration with sling. What is a resource? From the official… When launching Sling as a web application using the sling-servlet. Sep 20, 2018 · Hi, If we require to make changes in the OOTB servlet, then we may require to look for the script making the ajax servlet call and there we can call our custom servlet. Jul 28, 2025 · Sling servlets (one level down) Sling servlets let you register your servlet in the opposite manner. 0. 0") That leads to the fact that > the Sling Main servlet always takes precedence as > {quote} > In the case of two Servlet Context Helpers with the same path, the service > with the highest ranking is searched first for a match. internal. java blob: 62d7f98e3b4bf59e558d414a0e159ece7bbe4bcb [file] [log] [blame] GitBox Sun, 17 Jan 2021 11:57:56 -0800 sonarcloud [bot] removed a comment on pull request #10: URL: https://github. Jul 17, 2024 · Hi good afternoon, i trying to modify the PageRedirectServlet to do a custom redirection in AEM. com/artifact/org. Jun 26, 2018 · Judging from the other filters listed, I think the leftmost number is the filter ranking. Oct 18, 2021 · Hi @Karim_Onizuka , yes, for your use case sling servlet filter is better option and go through the below url for latest annotation to create filter. core</artifactId> <version>3. ranking=700); called: 0; time: 0ms; time/call: -1µs Apr 23, 2015 · [jira] [Commented] (SLING-4655) Servlet Resolver does not use registered servlet's service. Similar to using service ranking property. This value may span the whole range of integer values. Summary • AEM uses Sling framework that integrates OSGI with the web container. As a result, in our case we just needed 2 servlets each of them mapped to same resource type but to different selectors: Apr 18, 2022 · Use Case Here we are going to showcase how we can access multiple implementations of an OSGI service dynamically (at run time) from a sling servlet. Mar 17, 2015 · In case you want the servlet to work with resourceType the servlet should have an additional configuration for extensions property (sling. 4' Mar 20, 2018 · I have a sling model which inject an OSGi service. This fosters meaningful URLs and resource Note: There is a new version for this artifact New Version 1. servlet-helpers</artifactId> <version>1. And you specify the servlet that should render the content based on Sling Sep 27, 2019 · Hi All, I'm using AEM6. It helps to preprocess data before reaching it to servlet. servlet-helpers implementation 'org. Sep 4, 2023 · I have 10 servlets created and for all the servlets I need to create a one Servlet FILTER as a pre-processer to verify him/her against user group access. Nov 22, 2020 · How to write JUnit Unit Tests for AEM Sling Models and Servlets, including how to mock resources, OSGi Services, and content. Factor Component Property Type (as defined by OSGi DS 1. Sometimes we have to deal with many service instances at once. Before calling authentication Filter. Rather than addressing a servlet and specifying the content you would like the servlet to render based on the query parameters, you address the content that you want. 0') ) Apache Sling™ is a framework for RESTful web-applications based on an extensible content tree. Jun 14, 2024 · Creating an OSGi service with multiple implementations and calling the respective implementation from a Sling Model or another OSGi service involves leveraging OSGi service properties and references. Sling filters are basically OSGi services which are implementing javax. Create a servlet called GetFieldChoices under the servlets folder as shown in the screen-shot below. OR What is major different between creating Servlet using path as well as resourceType. Filter service is accepted as a filter for Sling unless the pattern property used by the Apache Felix HttpService whiteboard support is set in the service registration properties. class, property = {"process. Path-bound servlets cannot be access controlled using the default JCR repository ACLs. ranking property but it hasn't worked for me eithe Apache Sling Servlet Annotations. If not go through this tutorial to Set up AEM Project in Eclipse. 7. Apr 23, 2024 · This article details the OSGi configuration settings (listed according to bundle) that are relevant to project implementation. → A Sling Servlet is a server-side component that handles HTTP requests and responses. If you use a sling:OsgiConfig or JSON config file, the service. For example, an OSGi service to send emails. Jan 8, 2025 · After reading this Article, You should have an Understanding of What is Sling Servlets? Java Servlet Life Cycle Lifecycle of an AEM Servlet The Key difference between a JAVA Servlet and an AEM Component Property Type (as defined by OSGi DS 1. jsp file that points to the selector of my custom servlet but it has not worked. Sling Servlet: In AEM, servlets are registered asOSGi services. 0') ) May 25, 2017 · See the Apache Sling docs on Servlet Registration for the available service reference properties. Let me explain with an example. SimpleDateFormat instances for parsing date/time string representations. resolver --> <dependency> <groupId>org. author using a POST, the new node goes under /content/config That happens if both the /content/config. Many Sling projects want to be able to create model objects - POJOs which are automatically mapped from Sling objects, typically resources, but also request objects. OSGi is built on top of sling and JCR. They are extremely useful tool for filtering request processing. You can use the default SlingServlets like GET/POST methods or write your own Servlets by extending the SlingAllMethodsServlet (i. implementation ("org. filter package. Sling is a Rest Based Protocol to access the JCR over the web. I have two questions : what do you think about this solution ? do you have better suggestions ? Mar 23, 2023 · AEM Sling Servlet Servlet is a Java class which runs on a server side where application resides. To set it use the annotation ServiceRanking The Servlet Resolver registers a ResourceProvider for each Servlet service registered and handled by the ServletResolver, that is, those with a Sling servlet registration property. SlingServletResolver) listens for the OSGi services implementing javax. Sep 4, 2023 · Hi When you create Servlet Filter, You get an option to specify the requests for which the filter should be called like @Component( service = Filter. Apache Sling Servlet Helpers Mock implementations of SlingHttpServletRequest, SlingHttpServletResponse and related classes. The order of the filter is determined by the property service. servlets. resourceTypes service reference properties must be set. Jan 26, 2017 · 1 As AEM is built on top of REST architectural concept it exposes Restful endpoints via Servlets. com/apache/sling-org-apache-sling-servlets-post Apr 10, 2024 · Sling servlets (one level down) Sling servlets let you register your servlet in the opposite manner. Or a service that executes search queries. sling. Jun 14, 2023 · Switching to the Sling Servlet Resolver page and copying the path from the component detail page, clearly showing the path configured in the code, then switching to the POST method that the servlet is listening for, and the resolver cannot find a servlet to support that path. Regards Manikantha R Solved: Hi My Logout Servlet is defined as @Component (enabled = true) @Service (Servlet. Oct 16, 2020 · Saw some query on Adobe community forum on how to make a POST call to a servlet using sling. It will call doFilter () method every time request reaches out to Server. Oct 19, 2023 · I have an AEM Servlet that accepts GET requests and I am trying to update it to accepts POSTs as well, but when I update the servlet to accept both it starts calling the Default sling servlet inste Sep 3, 2023 · I have 10 servlets created and for all the servlets I need to create a one Servlet FILTER as a pre-processer to verify him/her against user group access. e. Otherwise, it will default to zero. The Sling Main servlet context should use a lower ranking so that simple servlets registered via OSGI HTTP Whiteboard pattern without explicit context can kick in at all! Attached the web console of Sling Starter 12: Jun 10, 2021 · OSGi DS 1. extensions=json", "sling. Gain clear insights and practical answers for your development needs in this comprehensive guide. Eg: - 314941 Aug 24, 2025 · Top 10 Common Apache Sling Servlet Questions Answered - Your Ultimate Guide Explore the top 10 frequently asked questions about Apache Sling Servlets. Jul 22, 2020 · Such servlets are provided as ServletResource instances which adapt to the javax. apache. This is a middle layer between web browser from where HTTP request originate and application web … Mar 24, 2025 · Build your first sling servlet to merge data with form template. Jan 27, 2024 · implementation ("org. Every Sling Servlet must implement the Servlet interface which defines its lifecycle methods. The default for sling. This configuration let's you run a servlet in context of a resource (of a particular resourceType) instead of a global one. selectors, sling. ranking:Integer=100. Technology Stack: Sling is built on top of OSGi and JCR. The article covers creating a component service with a filter class, providing a service description, ranking, and vendor for the filter, and overriding the doFilter method… Jan 30, 2018 · Solved: Hello, We've been trying to troubleshoot an issue with the default sling post servlet and i'm hoping someone has experienced this - 252767 Dec 6, 2024 · Core Concept: Sling maps HTTP request URLs to resources stored in the JCR repository and processes them with scripts or servlets. ranking in the properties map will be Long. Filter interface. properties file is located in the WEB-INF folder along with the sling_install. The Sling Post Servlet configuration property servlet. First I create a service "ServletRegistration" having an OSGI Configuration asking for Endpoint Prefix Configuration, because every service is a component, so on the activate method of the component we need to register all the servlets dynamically and unregister and re-register with new values, if the author makes any change in configuration. resourceTypes=s. Servlets can be registered as OSGi services. Jul 23, 2024 · Sling Servlet: described in depth in AEM Hi there, developers From this blog, best wishes This blog’s primary objective is to introduce you to the Sling Servlet, describe its implementations, and … Jan 7, 2025 · The servlet is registered using sling. sling-mock. class, property = { EngineConstants. So here I am with my short article on how we can call a POST servlet using the same. • Sling allows you to create servlets and filters. Sling supports filters by applying filter chains to the requests before actually dispatching to the servlet or script for Dec 19, 2021 · ⚠️ In all three cases, an Integer is used. Create and configure Sling Servlets in Adobe Experience Manager (AEM) to handle requests, interact with the JCR, and customize AEM's behavior The specification of the sling. Nov 7, 2021 · This article discusses the best practices for writing a Sling servlet in Apache Sling. sling:org. I want get some request parameters prope The Sling Main servlet context should use a lower ranking so that simple servlets registered via OSGI HTTP Whiteboard pattern without explicit context can kick in at all! Attached the web console of Sling Starter 12: Oct 18, 2021 · The solution I figured out, is to implement a Sling servlet filter, to intercept the request, if I have the suffix then I create a predicate and call the search model otherwise do nothing and proceed with normal processing. I can see my - 650148 May 7, 2021 · Solved: Hi All, I am using felix scr annotations. sling » org. To set it use the annotation ServiceRanking Apache Sling Default POST Servlets. extensions and sling. All configuration values could be a string or an array of strings (see above example for methods). resolver. 3. Two filters with equalservice. AEM is built using Apache Sling – a powerful REST based web framework. If he is not reject the request in filter itself by giving 401. May 25, 2019 · A service listener (org. Solution: The servlet was registered with resourceType: cq/Page so that Servlet is registered for every Page. 5. Filters are objects that perform filtering tasks on requests to or responses from a resource. Jun 13, 2023 · Switching to the Sling Servlet Resolver page and copying the path from the component detail page, clearly showing the path configured in the code, then switching to the POST method that the servlet is listening for, and the resolver cannot find a servlet to support that path. Basic Usage Model Classes In the simplest case Component Property Type (as defined by OSGi DS 1. The list acts as a guideline and it is not exhaustive. While working on an exciting project, we discovered one of its exiting features – Apache Sling Filters. 4 and for a particular case I have a custom sling servlet must address get requests from multiple extensions. servlet-helpers:1. Component Property Type (as defined by OSGi DS 1. The spec calls for Integer. Servlet class. Therefore, all servlets registered via OSGi HTTP Whiteboard need to be registered with a custom context having a service. • You can bind a servlet to a path or to a resource type using properties. json file into filtertest folder, - 565546 apache / sling-org-apache-sling-servlets-annotations / c078f0d8fb28583abe89d44eaf12cb0cea293736 / . It covers the recommended way to register a Sling servlet using OSGi DS 1. text. 4 component property type annotations for Sling servlets and filters Central (4) Mar 11, 2023 · Recently I came across a usecase, where a servlet is getting invoked on all pages (including OOTB pages) of our AEM instances. To set it use the annotation ServiceRanking Support in Sling Engine 2. Also see filter-scope and the changes made to introduce pattern based scopes (SLING-1213, SLING-1734) Aug 26, 2024 · <dependency> <groupId>org. Ways to Register a Servlet in AEM There are three common ways to register a servlet in AEM: By Path apache / sling-org-apache-sling-servlets-annotations / refs/heads/feature/paths-strict-metaannotation / . Mar 7, 2017 · How to write Sling Servlet using path in AEM. Filter which of course means that the services implement this interface. DecorateUserGeneratedFilter (id: 8402, property: service. Sling servlet working fine for xml extension but not for txt extension. postApache Sling Servlets POST Gradle (Short) Gradle (Kotlin) SBT Ivy Grape Leiningen Buildr <!-- https://mvnrepository. Sep 3, 2023 · I want to create a single filter for all servlets where I need to verify the user for AEM user group access in the FILTER itself. SLING_FILTER_PATTERN + "=" Sling Servlet 02: What is a Sling Servlet? Get to know in-depth with my new blog post Component Property Type (as defined by OSGi DS 1. Apr 18, 2021 · Sling Engine will take care of permissions if you register servlet using Resource Type. The request parameter for the service call is configurable. Apache Sling Servlet Annotations OSGi DS 1. Jun 3, 2024 · Sling servlets (one level down) Sling servlets let you register your servlet in the opposite manner. Contribute to apache/sling-org-apache-sling-servlets-annotations development by creating an account on GitHub. Dec 29, 2018 · Make your own servlet class with the same selector (redirect) with 301 redirect logic in it and make the service ranking of this servlet higher. Takes care of writing the relevant service properties as being used by the Sling Servlet Resolver (ServletResolverConstants) to register the annotated servlet filter component as Sling servlet filter. Apache Sling Dynamic Include. - 427923 @Grapes ( @Grab (group='org. Feb 4, 2024 · Solved: I'm developing a custom servlet to prevent users not logged into our site from downloading certain content in the DAM. They can be used to call a servlet, to redirect to another page, to authenticate request, preprocessing, post-processing of mark up, logging, measuring, decoration or adding/removing request parameters. The Sling Main servlet context should use a lower ranking so that simple servlets registered via OSGI HTTP Whiteboard pattern without explicit context can kick in at all! Attached the web console of Sling Starter 12: Oct 20, 2025 · Discover clear answers to frequent questions about Apache Sling development, providing practical insights and guidance for developers working with this web framework. That leads to the fact that the Sling Main servlet always takes > precedence as > {quote} > In the case of two Servlet Context Helpers with the same path, the service > with the highest ranking is searched first for a match. Sometimes these POJOs need OSGi services as well. Break the requirement To deal with the requirement we are going to break it in multiple requirements - Creating multiple implementations of an OSGi service.