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javajsonjacksonpretty-print

pretty print JSON using java, without formatting the values

I know that most Java json libraries can pretty print by

  • parsing into a generic model and then
  • serialising the model.

There are endless existing questions on StackOverflow which tell you to pretty print json this way using Jackson or GSON, e.g Pretty-Print JSON in Java

However, I have found with using Jackson ObjectMapper to do this, if I have decimal value eg "10000.00" it will then parse them into either a BigDecimal or Double and then end up writing it as "10000.0" (double) or "1E+4" (BigDecimal).

What I want is a way of formatting JSON which only affects whitespace, and does not disturb the content of any values - if the input was "10000.00" the output must be "10000.00"

Does anyone know of a Java JSON library that can handle that?

Solution

  • Underscore-java library has static method U.formatJson(json). It will leave the double value as is. 12.0 will be formatted as 12.0. I am the maintainer of the project.