NinjaCat NinjaCat - 7 months ago 141
Java Question

How to Validate JSON with Jackson JSON

I am trying to use Jackson JSON take a string and determine if it is valid JSON. Can anyone suggest a code sample to use (Java)?

Answer

Not sure what your use case for this is, but this should do it:

public boolean isValidJSON(final String json) {
   boolean valid = false;
   try {
      final JsonParser parser = new ObjectMapper().getJsonFactory()
            .createJsonParser(json);
      while (parser.nextToken() != null) {
      }
      valid = true;
   } catch (JsonParseException jpe) {
      jpe.printStackTrace();
   } catch (IOException ioe) {
      ioe.printStackTrace();
   }

   return valid;
}
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