I too stumbled upon this a while ago. I might even say that on some level it's so simple that there is not much documentation about it, and at some point it gets 'complex' enough that you should know about java enough.
The simplest way is to slurp or spit. slurp reads a file into a string, and spit writes a string into a file. Then there is the with-open macro(?) which opens connections and closes them when one. The reader and writer opens a java Reader and Writer classes respectively. (They're interfaces, but those functions try to figure out what kind of handle you're trying to open). Also the output-stream and input-stream handle it a bit. (with-open [r (reader "http://www.reddit.com";)] (.read r)) And to finish this off with a shameless plug; I wrote a blog post about downloading a random wallpaper from reddit, which handles reading http content, parsing json and reading/writing binary files. http://users.utu.fi/machra/posts/2011-08-24-2-reddit-clojure.html -- Mats Rauhala MasseR
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