在scala中将字符串转换为json格式

Question

I have to convert a string to json format in scala . The string is like this:

"classification" : "Map(Metals -> List(Cu, Co, Ni), Nonmetals -> List(N,O,C), Noblegases -> List(Ar, Kr))"

The desired json format is like this:

"classification" : {"Metals": [Cu, Co, Ni],
                    "Nonmetals":[N,O,C],
                    "Noblegases":[Ar, Kr]
                    }

Any quick suggestions would be appreciated.

Answer 1

Your question is not very specific so my answer is a bit vague as well.

First you will have to parse the input string and extract the values. I would use a combination of regular expressions and simple String operations like searching for the first occurrence of a certain character (eg colon) and splitting the string there.

In the next step you create the JSON object. There are several libraries out there that you can use. I suggest JSON-Java/org.json or if you like to use a scala library you can use play-json .