How to convert JSOn in the form of a String to List in Java

Question

ObjectMapper mapper = new ObjectMapper();
List<String> stringIds = mapper.readValue(result, new TypeReference<List<String>>(){});

where result = { "stringids": [ "abc", "xyz" ] }

So for Input { "stringids": [ "abc", "xyz" ] }, I want the result to be a list of strings abc, xyz

Getting this exception when trying above code:- com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token

"{"abc", "xyz"}" is not valid JSON. Do you mean "["abc", "xyz"]"? — Sweeper, Jan 09 '20 at 07:20
https://stackoverflow.com/questions/5245840/how-to-convert-jsonstring-to-jsonobject-in-java — NaveenBharadwaj, Jan 09 '20 at 07:25

score 1 · Accepted Answer · answered Jan 09 '20 at 07:22

1

That's because you can't use a JSON library to deserialize broken JSON.

The correct way to represent a collection in JSON is ["abc", "def"] not {"abd", "def"}.

answered Jan 09 '20 at 07:22

Nicktar

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How to convert JSOn in the form of a String to List in Java

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