How can i get Url Path parameters in servlet-filter?

Question

Map<String, String> pathVariables = (Map<String, String>) request
                .getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);

Using above code, I was able to get the pathVariables but...
How can i get these parameters in order, as this is unordered map so it will not provide me ordered keys according to the url? for eg: i have http://localhost:8080/url/123/234/xyz/123 which should map to http://localhost:8080/url/{id}/{deptId}/{code}/{empId}. Now how can i know that first 123 maps to id or empId ???

I want this url path parameter in exact order so that i could map it for my usecase. Any help would be appreciated.

bpawlowski · Accepted Answer · 2022-08-01 11:26:56Z

1

Actually, you can't do that easily using just servlet api. Frameworks are doing that for you, like spring web-mvc and dropwizard. You have to implement your servlet or servlets the way they can handle uris with specific structure and then extract desired path variables. That's pretty complex. I would suggest using some web framework for that or at least some library that will help you.

Good luck.

answered Aug 1, 2022 at 11:26

bpawlowski

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Gourav Kumar Over a year ago

Can you tell me any library which can help in this. any library either spring-web-mvc or dropwizard which you are telling. actually the above code though which i am getting the path variables not in order through, its spring-web specific, but i need same order.

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