How to convert Scala Map into JSON String?

Question

For example, I have this Map value in Scala:

val m = Map(
    \"name\" -> \"john doe\", 
    \"age\" -> 18, 
    \"hasChild\" -> true, 
    \"childs\" -         


        

Answer 1

val mapper = new ObjectMapper()
mapper.writeValueAsString(Map("a" -> 1))

result> {"empty":false,"traversableAgain":true}

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import com.fasterxml.jackson.module.scala.DefaultScalaModule

val mapper = new ObjectMapper()
mapper.registerModule(DefaultScalaModule)
mapper.writeValueAsString(Map("a" -> 1))

result> {"a":1}