Jackson JSON Deserialization: array elements in each line

Question

I am using Jackson and would like to pretty-print JSON such that each element in arrays goes to each line, like:

{
  \"foo\" : \"bar\",
  \"blah\" : [
    1,
             


        

Answer 1

If you don't want to extend DefaultPrettyPrinter you can also just set the indentArraysWith property externally:

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.enable(SerializationFeature.INDENT_OUTPUT);

DefaultPrettyPrinter prettyPrinter = new DefaultPrettyPrinter();
prettyPrinter.indentArraysWith(DefaultIndenter.SYSTEM_LINEFEED_INSTANCE);

String json = objectMapper.writer(prettyPrinter).writeValueAsString(object);