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by decebals 3915 days ago
I don't know many things about Spark, so I can't make a full comparison. I will try bellow to enumerate some advantages of Pippo:

- modular [1] (spark uses a giant static singleton architecture)

- support (via modules) for many Template Engines [2] (Freemarker, Jade, Groovy, Trimou, Pebble)

- support (via modules) for many Servers [3] (Jetty, Undertow, TJWS); spark depends on Jetty

- directly serving of static resources [4], support for WebJar

- content type negotiation

- custom session [5] (support for cookie based implementation)

- support (via modules) for many ContentTypeEngines [6] (Plain text, Json - Gson/Fastjson, Xml - Jaxb/Xstream, Yaml - SnakeYaml)

- i18n [7] (in java or directly in template)

- support (via modules) for many IoC [8] (Guice, Spring)

- support metrics [9] (via modules - Ganglia, Graphite, InfluxDB, Librato)

- custom (template) error pages

- regex routes

Unfortunately the actual documentation of Pippo it's a little bit behind of the implementation (from documentation are missing some nice concepts: named routes, finally filters, custom route context, ...) and from this reason I cannot give you more useful links but I will fix this aspect asap.

Another difference in Pippo to other (micro) java web framework (spark, ninja) is that a RouteHandler it's a real endpoint (the handle method return void). You can finalize/commit the response using send, render, redirect. Everything is transparent.

[1] http://www.pippo.ro/doc/modularity.html

[2] http://www.pippo.ro/doc/templates.html

[3] http://www.pippo.ro/doc/server.html

[4] http://www.pippo.ro/doc/static-files.html

[5] http://www.pippo.ro/doc/session.html

[6] http://www.pippo.ro/doc/content-types.html

[7] http://www.pippo.ro/doc/internationalization.html

[8] http://www.pippo.ro/mod/spring.html

[9] http://www.pippo.ro/mod/metrics.html