Running Swagger UI on Tomcat

[Sayak Paul]

Hello. I have downloaded the zip version of Swagger-UI from Git. Now I want to host it from Tomcat locally with my customized .json spec. If I simply put the whole Swagger-UI folder in the webapps folder of Tomcat, will it work? And how do I add my own spec into it? Let's say my APIs are running in the same Tomcat Server itslef.

What are steps that are to be taken care of? How do I do the CORS in this case? Will adding the following do the work?

<filter>
  <filter-name>CorsFilter</filter-name>
  <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>CorsFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

[Ron Ratovsky]

It should work, yes. Pretty much like you’d serve any other static content.

You’d need to modify the index.html and point it the the URL where your API definition is served.

You do not need to enable CORS if the app and swagger-ui run in the same application.

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[Sayak Paul]

Thanks Ron for clearing the doubts. Furthermore, what if I am having the spec locally inside the webapps folder? How do I point it to the index.html of Swagger-UI? And also I didn't get CORS will not be needed if my app and Swagger UI are running in the same application. Could you please provide an example?

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[Ron Ratovsky]

Even if you have the spec in the webapp folder, it’d be hosted just like swagger-ui and have a URL – feed that to it.

CORS is only needed if the host and port of the javascript and the target calls are not the same, by definition.

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[Sayak Paul]

So how do I construct the URL of the spec file? And suppose the war of my application is present within the webapp folder of Tomcat, where do I have put the Swagger UI so that CORS is not needed?

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[Ron Ratovsky]

Those questions are a bit out of scope. You’d put the files wherever you’d put any other static content – that’s a Java question, not a Swagger one. As long as they’re in the same application, you won’t need CORS.

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[Sayak Paul]

Okay. And what about the URL of the yaml/json spec? How do I construct that?

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[Ron Ratovsky]

The same way you’d construct the url to access swagger-ui within your app.

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[Sayak Paul]

Thanks for the insights. I will get back to you if I get stuck in between.

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