Servlet for external Url to fetch html

[vinuu123]

Hi Everyone,

Can anyone help me how to write sevlet for this dialog, I want fetch html from external URL.

Thanks in advance.

[sherinregi]

Hi @vinuu123 

I am not sure if I am exactly following the requirement here but in case your ask is to invoke the servlet from dialog you can try the implementation in the below link.

https://aemsimplifiedbynikhil.wordpress.com/2018/07/30/call-any-servlet-in-touchui-dialog-aem-6-3/

You can also bind with a slingmodel in backend and then read the content in backend with URL configured from the dialog also and can avoid servlet if that works.

[ShaileshBassi]

Hi @vinuu123 You can read the value of the URL in the sling dialog and then use the below code to get the extract of the entire html section

@Model(adaptables = {Resource.class, SlingHttpServletRequest.class}, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class HtmlModel{

    private static final Logger logger = LoggerFactory.getLogger(HtmlModel.class);

    @Getter
    private String body;

    @PostConstruct
    void init() {
        final String api = <read it from dialog>;
        final HttpGet httpRequest = new HttpGet(api);
        try (final CloseableHttpResponse response = HttpClients.createDefault().execute(httpRequest)) {
            body = IOUtils.toString(response.getEntity().getContent(), StandardCharsets.UTF_8);
        } catch (final IOException e) {
            logger.error("IOException while reading HTML API %s: ", e);
        }
    }

}

Hope this helps!

Thanks

[vinuu123]

@ShaileshBassi , here what is api ?

 this is my html for entering external url from dialog

can you help me here?

[ShaileshBassi · Accepted solution]

Hi @vinuu123  I am referring the API to the external URL. You can get it via annoations.

@Inject
@Optional
@Named("externalUrl")
protected String externalUrl;

Thanks

[Mahedi_Sabuj]

Hi @vinuu123 

I'm curious about the choice not to use an iframe to embed external URL. Could you provide insight that influenced this decision?