Sling servlets doesn't work for txt extension

[pradeepd1320668]

Hi All,

I am using felix scr annotations. 

Sling servlet working fine for xml extension but not for txt extension.

Attaching servlet code for reference

@service()
@SlingServlet(resourceTypes = "/apps/test/components/page/blankpage",
selectors = "301",
extensions = "txt",
methods = "GET",
metatype =true)
public class TestServlet extends SlingSafeMethodsServlet {

/**
*
*/
private static final long serialVersionUID = 1L;
private static final Logger LOGGER = LoggerFactory.getLogger(TestServlet.class);

@Override
protected void doGet(final SlingHttpServletRequest req,
final SlingHttpServletResponse resp) throws ServletException, IOException {
LOGGER.info("Entering doGet");
resp.setContentType("text/html");
resp.getWriter().println(response);

}
}

Any pointers is highly appreciated.

Gone through below link, not helped anymore.

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/sling-servlet-txt-extensio...

Thanks,

Pradeep

[Asutosh_Jena_]

Hi @pradeepd1320668 

Please use the below code:

@Component(service = Servlet.class, property = {"process.label=Some Servlet",
        Constants.SERVICE_DESCRIPTION + "=Some Servlet"})
@@SlingServletResourceType(resourceTypes = "test/components/page/blankpage",
        methods = HttpConstants.METHOD_GET,
        extensions = "txt",
        selectors = "something")
public class TestServlet extends SlingSafeMethodsServlet {
    //Rest of code
}

Here is a detailed exampale with video:

http://www.sgaemsolutions.com/2017/12/apache-sling-servlets-and-scripts.html

Make sure the resource you are accessing has the sling:resourceType as "test/components/page/blankpage".

Let's say you are accessing /content/mywebsite/abc/jcr:content.something.txt then abc page jcr:content should have the above property as sling:resourceType

Hope this will help!

Thanks

[Asutosh_Jena_]

Hi @pradeepd1320668 

OSGi DS 1.4 (R7) component property type annotations for Sling Servlets uses @SlingServletResourceTypes

Need to add the below dependency:

<dependency>
    <groupId>org.apache.sling</groupId>
    <artifactId>org.apache.sling.servlets.annotations</artifactId>
    <version>1.2.4</version>
</dependency>

Please see link below:

https://sling.apache.org/documentation/the-sling-engine/servlets.html 

Thanks

[pradeepd1320668]

None of those are working in txt extension. 2nd and 3rd logic is not working for xml extension also. First : @SlingServlet(resourceTypes = "/apps/test/components/page/blankpage", selectors = "301", extensions = "xml", methods = "GET") Second : @component(service = Servlet.class, property = {"process.label=Some Servlet", Constants.SERVICE_DESCRIPTION + "=Some Servlet"}) @SlingServletResourceTypes(resourceTypes = "/apps/test/components/page/blankpage", methods = HttpConstants.METHOD_GET, extensions = "xml", selectors = "301") Third : @component(service = Servlet.class, property = { "sling.servlet.methods=" + HttpConstants.METHOD_GET, "sling.servlet.resourceTypes=" + "/apps/test/components/page/blankpage", "sling.servlet.selectors=301", "sling.servlet.extensions=xml", "service.ranking:Integer=2" })

[Asutosh_Jena_]

What is your request URL?

[Kiran_Vedantam]

Hi @pradeepd1320668,

Can you please use the latest OSGI declarative services annotations [R7]  annotations like this:

@Component(service = Servlet.class,
property = {
"sling.servlet.methods=" + HttpConstants.METHOD_GET,
"sling.servlet.resourceTypes=" + ADD THE RESOURCE TYPE,
"sling.servlet.selectors=ADD SELECTORS",
"sling.servlet.extensions=txt",
"service.ranking:Integer=ADD THE RANKING"
})

Hope this helps!

Thanks,

Kiran Vedantam

[Prince_Shivhare · Accepted solution]

my suggestion would be not to use the SCR annotation becasue it is depricated now.

Please use the OSGI annotations.

org.osgi.service.component.annotations.Component;

@Component(service = Servlet.class, property = {
                Constants.SERVICE_DESCRIPTION + "=JSON Servlet to read the data from the external webservice",
                "sling.servlet.methods=" + HttpConstants.METHOD_GET,
                "sling.servlet.paths=" + "/bin/SimpleServlet"
})
public class SimpleServlet extends SlingSafeMethodsServlet {

[BrianKasingli]

Here's an example of working code with

@component(service = { Servlet.class })
@SlingServletResourceTypes(
    resourceTypes="/apps/my/type", 
    methods= "GET",
    extensions="txt",
    selectors="hello")
public class MyServlet extends SlingSafeMethodsServlet {

    @Override
    protected void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServletException, IOException {
        ...
    }
}

txt:

[pradeepd1320668]

I could not find @SlingServletResourceTypes annotation. Can you please share complete servlet code?