JSON Parser

rama · April 2, 2007, 7:01am

I am getting my data in JSON format, how can i validate or Parse JSON
data in rails.

Please help me,

Thanks & Regards,

Rama

rama · April 2, 2007, 10:05am

On Monday 02 April 2007 05:01, Rama S. wrote:

I am getting my data in JSON format, how can i validate or Parse JSON
data in rails.

Please help me,

Thanks & Regards,

Rama

RTFM?

but seriously - gogle for ruby JSON - first result gives you ruby JSON
library:

if you have data in JSON do @j = JSON.parse(json_data)
if you want to generate JSON from hash/array - json_data =
JSON.unparse(@hash)

rama · April 2, 2007, 10:41am

Rama S. wrote:

I am getting my data in JSON format, how can i validate or Parse JSON
data in rails.

Please help me,

Thanks & Regards,

Rama

you could use the json gem

http://json.rubyforge.org/

HTH

Gustav P.

rama · April 2, 2007, 12:53pm

Rama S. wrote:

In the above code “olvID” variable get JSON data, i want to check iam
getting valid JSON or not, for that i used “@j = JSON.parse(olvID)”, but
i get error :

c:/ruby/lib/ruby/site_ruby/1.8/json.rb:300:in `parse_object’: expected
‘,’ or ‘}’ in object at ‘“Val
ue”:"",}},"MetaC’! (JSON::ParserError)
^
This isn’t allowed in a valid JSON text.

rama · April 2, 2007, 10:43am

Marcin R. wrote:

On Monday 02 April 2007 05:01, Rama S. wrote:

I am getting my data in JSON format, how can i validate or Parse JSON
data in rails.

Please help me,

Thanks & Regards,

Rama

RTFM?

but seriously - gogle for ruby JSON - first result gives you ruby JSON
library:

if you have data in JSON do @j = JSON.parse(json_data)
if you want to generate JSON from hash/array - json_data =
JSON.unparse(@hash)

my code :

require ‘D3I.rb’
require ‘json’
status = 0
ic = nil
begin
ic = Ice::initialize(ARGV)
base = ic.stringToProxy(“SessionFactory:tcp -p 10000”)
twoway = D3View::ISessionFactoryPrx::checkedCast(base)
if not twoway
raise “Invalid proxy”
end

session = twoway.CreateSession()
olv = session.LoadObjects("APAL3DB", "AP3Customer")
olvID, iNumRecs = olv.AsJSON(0, 2)

#puts olvID
@j = JSON.parse(olvID)
puts @j
puts '------------------------------------------------------------'

#puts olv.GetID()

rescue Ice::Exception => ex
puts ex
end
exit

In the above code “olvID” variable get JSON data, i want to check iam
getting valid JSON or not, for that i used “@j = JSON.parse(olvID)”, but
i get error :

c:/ruby/lib/ruby/site_ruby/1.8/json.rb:300:in parse_object': expected ',' or '}' in object at '"Val ue":"",}},"MetaC'! (JSON::ParserError) from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:259:inparse_value’
from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:296:in
parse_object' from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:259:inparse_value’
from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:296:in
parse_object' from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:259:inparse_value’
from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:296:in
parse_object' from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:259:inparse_value’
from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:296:in
parse_object' from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:202:inparse’
from c:/ruby/lib/ruby/site_ruby/1.8/json.rb:442:in `parse’
from client.rb:22
Don’t know is it error in my JSON data, or in gems

rama · April 2, 2007, 1:01pm

Florian F. wrote:

Rama S. wrote:

In the above code “olvID” variable get JSON data, i want to check iam
getting valid JSON or not, for that i used “@j = JSON.parse(olvID)”, but
i get error :

c:/ruby/lib/ruby/site_ruby/1.8/json.rb:300:in `parse_object’: expected
‘,’ or ‘}’ in object at ‘“Val
ue”:"",}},"MetaC’! (JSON::ParserError)
^
This isn’t allowed in a valid JSON text.

I think this time you understood what actually i am looking for :

I get AsJSON data.
I want to parse JSON data in ruby.

rama · April 2, 2007, 2:09pm

James G. wrote:

On Apr 2, 2007, at 6:01 AM, Rama S. wrote:

‘,’ or ‘}’ in object at ‘“Val
ue”:"",}},"MetaC’! (JSON::ParserError)
^
This isn’t allowed in a valid JSON text.

I think this time you understood what actually i am looking for :

I get AsJSON data.

I want to parse JSON data in ruby.

But as Florian said, you JSON data is not valid JSON. That’s why the
Ruby parser won’t parse it.

James Edward G. II

Thanks Florian.
Thanks James, I found the error in JSON txt.

My last question is there any online website, where i can paste my JSON
data into textarea and i can check from there regarding JSON validation.

Thanks

Rama

rama · April 2, 2007, 1:57pm

On Apr 2, 2007, at 6:01 AM, Rama S. wrote:

‘,’ or ‘}’ in object at ‘“Val
ue”:"",}},"MetaC’! (JSON::ParserError)
^
This isn’t allowed in a valid JSON text.

I think this time you understood what actually i am looking for :

I get AsJSON data.

I want to parse JSON data in ruby.

But as Florian said, you JSON data is not valid JSON. That’s why the
Ruby parser won’t parse it.

James Edward G. II

rama · April 2, 2007, 3:12pm

My last question is there any online website, where i can paste my JSON
data into textarea and i can check from there regarding JSON validation.

It’s not a webiste, but you might want to look at this :
http://www.kuwata-lab.com/kwalify/

Chris

rama · April 2, 2007, 4:56pm

On Apr 2, 7:31 am, Rama S. [email protected] wrote:

I just wanted to check my JSON data is valid or not,
either from website or from command prompt.

If you want to know if it is valid, and you have access to a JS
interpreter (e.g. a web browser) then you could simply eval() it and
see if it compiles or not.

rama · April 2, 2007, 4:57pm

On Apr 2, 8:51 am, “Phrogz” [email protected] wrote:

On Apr 2, 7:31 am, Rama S. [email protected] wrote:

I just wanted to check my JSON data is valid or not,
either from website or from command prompt.

If you want to know if it is valid, and you have access to a JS
interpreter (e.g. a web browser) then you could simply eval() it and
see if it compiles or not.

For example, go to:
http://phrogz.net/tmp/simplejs.html

and paste your JSON ‘code’ in, and then hit tab or otherwise defocus
the top pane. If you see valid data in the bottom, the input was
valid. If not, well, it’s not a valid JS object.

rama · April 3, 2007, 12:27am

On Monday 02 April 2007 12:09, Rama S. wrote:

I get AsJSON data.
My last question is there any online website, where i can paste my JSON
data into textarea and i can check from there regarding JSON validation.

Thanks

Rama

~ irb
require ‘json’

begin
@l = File.open($*[0], “r”) { |f| f.readlines }
rescue Exception
puts “could not open file”
end

begin
JSON.unparse(@l)
puts “it’s valid JSON”
rescue Exception
puts “it’s not valid JSON”
end

rama · April 2, 2007, 3:31pm

Chris L. wrote:

My last question is there any online website, where i can paste my JSON
data into textarea and i can check from there regarding JSON validation.

It’s not a webiste, but you might want to look at this :
http://www.kuwata-lab.com/kwalify/

Chris

Chris :

Thanks for your TIP, i liked the link you send to me, but in kwalify, it
validates for YAML file, there it is mentioned that YAML and JSON are
some what similar, & moreover it validates from schema, in my
application i have not written any schema.

I just wanted to check my JSON data is valid or not, either from website
or from command prompt.

Regards,

Rama

JSON Parser

my code :

rescue Ice::Exception => ex puts ex end exit

rescue Ice::Exception => ex
puts ex
end
exit