blocks|key|206163|text|如果你把这个字符串解析成ruby对象，它会返回一个ruby+Hash对象，你可以这样得到它|type|unstyled|depth|inlineStyleRanges|entityRanges|data|206164|++ruby_obj+=+JSON.parse(json_string)
++ruby_obj['drawer']['stations']['tv']['header']|code-block|syntax|javascript|206165|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if your parse this string to ruby object, it will return a ruby Hash object, you can get it like this

<pre><code> ruby_obj = JSON.parse(json_string)
 ruby_obj['drawer']['stations']['tv']['header']
</code></pre>

blocks|key|204142|text|require+'json'

json_info+=+%25q(
{
++"drawer"+:+{
++++"stations"+:+{
++++++"tv"+:+{
++++++++"header"+:+"TV+Channels",
++++++++"logos"+:+{
++++++++++"one"+:+"www1",
++++++++++"two"+:+"www2",
++++++++++"three"+:+"www3"
++++++++}
++++++}
++++}
++}
}
)

class+MyJson
++++def+self.for(p_jason_string)
++++++++self.new(JSON.parse(p_jason_string))
++++end

++++def+initialize(p_info)
++++++++@info+=+p_info
++++end

++++def+inspect
++++++++@info.inspect
++++end

++++def+method_missing(p_missing_method_name)
++++++++print+'mm+';+p+p_missing_method_name
++++++++key+=+p_missing_method_name.to_s

++++++++if+@info.has_key?(key)
++++++++then
++++++++++++MyJson.new(@info[key])
++++++++else
++++++++++++puts+"no+key+#{p_missing_method_name}"
++++++++end
++++end
end+#+class+MyJson

holder+=+MyJson.for(json_info)
puts+'-----holder.drawer'
p+holder.drawer
puts+'-----holder.drawer.stations'
p+holder.drawer.stations
puts+'-----holder.drawer.stations.tv.header'
p+holder.drawer.stations.tv.header|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|204143|执行：|unstyled|204144|$+ruby+-v
ruby+1.9.2p320+(2012-04-20+revision+35421)+[x86_64-darwin12.2.0]
$+ruby+-w+t.rb
-----holder.drawer
mm+:drawer
{"stations"=>{"tv"=>{"header"=>"TV+Channels",+"logos"=>{"one"=>"www1",+"two"=>"www2",+"three"=>"www3"}}}}
-----holder.drawer.stations
mm+:drawer
mm+:stations
{"tv"=>{"header"=>"TV+Channels",+"logos"=>{"one"=>"www1",+"two"=>"www2",+"three"=>"www3"}}}
-----holder.drawer.stations.tv.header
mm+:drawer
mm+:stations
mm+:tv
mm+:header
"TV+Channels"|204145|请注意，我使用的是RVM，并且没有做任何特殊的事情来让json工作，必须是自动安装的。|204146|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>require 'json'

json_info = %q(
{
 "drawer" : {
 "stations" : {
 "tv" : {
 "header" : "TV Channels",
 "logos" : {
 "one" : "www1",
 "two" : "www2",
 "three" : "www3"
 }
 }
 }
 }
}
)

class MyJson
 def self.for(p_jason_string)
 self.new(JSON.parse(p_jason_string))
 end

 def initialize(p_info)
 @info = p_info
 end

 def inspect
 @info.inspect
 end

 def method_missing(p_missing_method_name)
 print 'mm '; p p_missing_method_name
 key = p_missing_method_name.to_s

 if @info.has_key?(key)
 then
 MyJson.new(@info[key])
 else
 puts "no key #{p_missing_method_name}"
 end
 end
end # class MyJson

holder = MyJson.for(json_info)
puts '-----holder.drawer'
p holder.drawer
puts '-----holder.drawer.stations'
p holder.drawer.stations
puts '-----holder.drawer.stations.tv.header'
p holder.drawer.stations.tv.header
</code></pre>

Execution :

<pre><code>$ ruby -v
ruby 1.9.2p320 (2012-04-20 revision 35421) [x86_64-darwin12.2.0]
$ ruby -w t.rb
-----holder.drawer
mm :drawer
{"stations"=&gt;{"tv"=&gt;{"header"=&gt;"TV Channels", "logos"=&gt;{"one"=&gt;"www1", "two"=&gt;"www2", "three"=&gt;"www3"}}}}
-----holder.drawer.stations
mm :drawer
mm :stations
{"tv"=&gt;{"header"=&gt;"TV Channels", "logos"=&gt;{"one"=&gt;"www1", "two"=&gt;"www2", "three"=&gt;"www3"}}}
-----holder.drawer.stations.tv.header
mm :drawer
mm :stations
mm :tv
mm :header
"TV Channels"
</code></pre>

Note that I use RVM and have done nothing special to have json working, must have been automatically installed.

blocks|key|3051224|text|您可以将字符串解析为拼音散列，然后将其转换为Mash。Mash为您提供了类似方法的访问。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3051225|require+'json'
require+'hashie'

hash+=+JSON.parse+json_string
obj+=+Hashie::Mash.new+hash
obj.drawer.stations.tv.header+#+=>+"TV+Channels"|code-block|syntax|javascript|3051226|更新|3051227|你也可以在没有第三方gem的情况下，使用ruby自己的OpenStruct|style|CODE|3051228|require+'ostruct'
require+'json'

obj+=+JSON.parse(json_string,+object_class:+OpenStruct)
obj.drawer.stations.tv.header+#+=>+"TV+Channels"|3051229|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/intridea/hashie^0|M|4|0|0|0|0|R|A|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|14|8|@$A|15|B|16|M|N]]|9|@]|C|$]]|$1|O|3|P|5|F|7|17|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

You can parse the string into a ruby hash and then turn it into a <a href="https://github.com/intridea/hashie">Mash</a>. Mash provides you with method-like access.

<pre><code>require 'json'
require 'hashie'

hash = JSON.parse json_string
obj = Hashie::Mash.new hash
obj.drawer.stations.tv.header # =&gt; "TV Channels"
</code></pre>

<h3>Update</h3>

You can also do it without a 3rd party gem, using ruby's own <code>OpenStruct</code>:

<pre><code>require 'ostruct'
require 'json'

obj = JSON.parse(json_string, object_class: OpenStruct)
obj.drawer.stations.tv.header # =&gt; "TV Channels"
</code></pre>

<blockquote>
 Possible Duplicate: 
 <a href="https://stackoverflow.com/questions/5410682/parsing-a-json-string-in-ruby">Parsing a JSON string in ruby</a> 
</blockquote>



Is it possible to convert a JSON string into a Ruby object? I would like to access its information with an expression similar to:

<pre><code>drawer.stations.tv.header
</code></pre>

JSON string:

<pre><code>{
 "drawer" : {
 "stations" : {
 "tv" : {
 "header" : "TV Channels",
 "logos" : {
 "one" : "www1",
 "two" : "www2",
 "three" : "www3"
 }
 }
 }
 }
}
</code></pre>

Is it possible to convert a JSON string to an object?

 可能重复：可以将JSON字符串转换为Ruby对象吗？我想用类似如下的表达式来访问它的信息：drawer.stations.tv.headerJSON字符串：{  "drawer" : {    "stations" : {      "tv" : {        "header" : "TV Channels", ...

问可以将JSON字符串转换为对象吗？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问可以将JSON字符串转换为对象吗？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问可以将JSON字符串转换为对象吗？
EN