Ruby 如何从JSON响应中提取值？

我正在使用RestClient用Ruby编写一些测试。测试工作正常，响应是JSON格式的，但是当我解析JSON并尝试提取我要查找的值时，会出现一个错误，显示为

indexer:key not found

依我看，我的代码应该有效。JSON是：

{"user":{"@xmlns":{"dvi":"http:\/\/xxxx","a":"http:\/\/xxxx","$":"http:\/\/xxxx"},"link":[{"@rel":"self","$":"http:\/\/xxxx"},{"@rel":"user","$":"http:\/\/xxxx"},{"@rel":"usage","$":"xxxx"},{"@rel":"repositories","$":"http:\/\/xxxx"},{"@rel":"shares","$":"http:\/\/xxxx"},{"@rel":"shareMemberships","$":"http:\/\/xxxx"}],"phone":{"$":"3518012343001"},"email":{"$":""},"firstName":{"$":"Jim"},"lastName":{"$":"Joe"},"uid":{"$":"91bc7a72bc724e5e9b53e688dd105ed4"},"accountName":{"$":"3518012343001"},"notificationMethod":{"$":"email sms"},"accountStatus":{"$":"Active"},"serviceLevel":{"$":"5"},"repositoryCount":{"$":"1"},"usage":{"allowed":{"$":"5368709120"},"total":{"$":"1024"}},"contactEmail":{"$":"jim@joe.com"}}}

我的代码是：

result = jsonabove
jdoc = JSON.parse(result)
notificationMethod = jdoc.fetch("notificationMethod")

return notificationMethod

---

这是因为

notificationMethod

键不是散列中的第一级键。在准备了

JSON#parse

方法之后，您有一个只有一个键的散列，名为

user

。您应该通过该键获取值，然后应用

notificationMethod

键。看起来是这样的：

require 'json'

result = <<HERE
{"user":{"......"}}
HERE

jdoc = JSON.parse(result)
notificationMethod = jdoc.fetch("user").fetch("notificationMethod")
puts notificationMethod

require'json'
结果=一点也不，很高兴帮助你！