Unable to access JSON property with “-” dash

2018-12-31 16:12发布

问题:

I am unable to retrieve a value from a json object when the string has a dash character:

{
\"profile-id\":1234, \"user_id\":6789
}

If I try to reference the parsed jsonObj.profile-id it returns ReferenceError: \"id\" is not defined but jsonObj.user_id will return 6789

I don\'t have a way to modify the values being returned by the external api call and trying to parse the returned string in order to remove dashes will ruin urls, etc., that are passed as well. Help?

回答1:

jsonObj.profile-id is a subtraction expression (i.e. jsonObj.profile - id).

To access a key that contains characters that cannot appear in an identifier, use brackets:

jsonObj[\"profile-id\"]


回答2:

For ansible, and using hyphen, this worked for me:

    - name: free-ud-ssd-space-in-percent
      debug:
        var: clusterInfo.json.content[\"free-ud-ssd-space-in-percent\"]