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SOLVED

Sling servlets doesn't work for txt extension

Avatar

Level 2

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

1 Accepted Solution

Avatar

Correct answer by
Community Advisor

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 {

View solution in original post

8 Replies

Avatar

Community Advisor

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

Avatar

Community Advisor

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

Avatar

Level 2
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" })

Avatar

Community Advisor

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

Avatar

Correct answer by
Community Advisor

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 {

Avatar

Community Advisor

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:

 

Avatar

Level 2

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