Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Using UriTemplate to Change Path Parameters in a URI

DZone's Guide to

Using UriTemplate to Change Path Parameters in a URI

· Java Zone
Free Resource

Build vs Buy a Data Quality Solution: Which is Best for You? Gain insights on a hybrid approach. Download white paper now!

have been recently working on a client generator in the wadl.java.net project and I was solving a bug where I wanted to change path parameter on a URI. This turned out to be quite easy with existing classes that are part of the Jersey project.

First of all you need a instance of UriTemplate, depending on the very of Jersey this is in a slightly different package - you IDE's automatic import will do the work for you.  

String template = "http://example.com/name/{name}/age/{age}";
UriTemplate uriTemplate = new UriTemplate(template);
 Then you use match(...) to extract them:
  String uri = "http://example.com/name/Bob/age/47";
  Map<String, String> parameters = new HashMap<>();

  // Not this method returns false if the URI doesn't match, ignored
  // for the purposes of the this blog.
  uriTemplate.match(uri, parameters);
 Then you can replace the parameters at will and rebuild the URI:
  parameters.put("name","Arnold");

  UriBuilder builder = UriBuilder.fromPath(template);
  URI output = builder.build(parameters);



Build vs Buy a Data Quality Solution: Which is Best for You? Maintaining high quality data is essential for operational efficiency, meaningful analytics and good long-term customer relationships. But, when dealing with multiple sources of data, data quality becomes complex, so you need to know when you should build a custom data quality tools effort over canned solutions. Download our whitepaper for more insights into a hybrid approach.

Topics:

Published at DZone with permission of Gerard Davison, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}