So now I'm trying to make the conversion to Crouton. Of course that is not
going well. Here is a chunk of code:
(ns one.core
(:gen-class))
(require '[clj-http.client :as client]
'[clojure.zip :as z]
'[clojure.data.zip :as dz]
'[clojure.data.zip.xml :as dzx]
'[crouton.html :as html])
(defn get-post-data [url]
(client/get url))
(def response (get-post-data login-URL))
(html/parse (:body response))
The *response *value is correct (its the HTML), but when I try to execute
the *html/parse* I get:
java.io.FileNotFoundException:
<html>
<head id="Head1"><title>
User Login Page
<\title>
<style>
body
{
color: #000000;
font: 12px\1.4 arial,FreeSans,Helvetica,sans-serif;
margin: 0;
... TONS OF HTML DELETED ...
<\center>
<\form>
<\body>
<\html>
(The filename or extension is too long)
(Unknown Source) java.io.FileInputStream.open0
FileInputStream.java:195 java.io.FileInputStream.open
FileInputStream.java:138 java.io.FileInputStream.<init>
... LOTS OF STACK TRACE DELETED ...
I hope someone can help. TIA.
On Wednesday, October 14, 2015 at 6:03:29 PM UTC-5, James Reeves wrote:
>
> I'm not that familiar with Enlive, so I can't comment on the ease of that
> approach.
>
> However, the way I'd personally do it is that I'd make use of Crouton and
> the zipper functions in clojure.zip and clojure.data.zip. A zipper is a
> functional way of navigating an immutable data structure.
>
> So first add Crouton and data.zip to your dependencies:
>
> [[crouton "0.1.2"]
> [org.clojure/data.zip "0.1.1"]]
>
> Then use Crouton to parse the body of the response from clj-http:
>
> (crouton.html/parse (:body response))
>
> This will give you a data structure that's compatible with clojure.xml,
> and therefore compatible with the XML zipper functions
>
> (dzx/xml1-> (z/xml-zip parsed-html)
> dz/descendents
> (dzx/tag= "input")
> (dzx/attr= "name" "foo")
>
> In the above case I'm using the following namespace aliases:
>
> (require '[clojure.zip :as z]
> '[clojure.data.zip :as dz]
> '[clojure.data.zip.xml :as dzx])
>
> It's been a while since I've needed to traverse X/HTML in Clojure though,
> so my code might be a little off.
>
> - James
>
> On 14 October 2015 at 22:53, Mike <mi...@thefrederickhome.name
> <javascript:>> wrote:
>
>> Thanks James! You helped me get another step along the way, I got this
>> working.
>>
>> Of course you mentioned Crouton; you should and I asked for advice on my
>> approach. So please allow me to expand the problem statement and you may
>> advise me further...
>>
>> Once I get this HTML parsed, I know that somewhere buried in this page is
>> an *<input>* tag that has *name="name"* attribute where I will specify
>> the name value at run time. I will need to be able to programmatically
>> find this tag and pul some values out of it. Will using *clj-tagsoup*
>> or *Crouton *make this location operation easier? Perhaps even using
>> *Enlive
>> *might make it easier, since the location and path to the tag is not
>> known; it must be located.
>>
>> On Wednesday, October 14, 2015 at 1:53:11 PM UTC-5, James Reeves wrote:
>>>
>>>
>>> Crouton is an alternative HTML parsing library (that's coincidentally
>>> written by me) and can be found at:
>>> https://github.com/weavejester/crouton
>>>
>>> Crouton uses a slightly different output syntax, which is compatible
>>> with Clojure's xml zipper functions, making it more suitable for document
>>> searches and traversal (IMO).
>>>
>>> - James
>>>
>>>
>
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