Java json pretty print (Jackson library)

// import com.fasterxml.jackson.databind.ObjectMapper;

​

new ObjectMapper()

        .writerWithDefaultPrettyPrinter() // <----- enable pretty print

        .writeValueAsString(ourObject);

Normal json:

{"name":"john","age":23,"salary":5000,"skills":["java","js"]}

​

Pretty print:

{

  "name" : "john",

  "age" : 23,

  "salary" : 5000,

  "skills" : [ "java", "js" ]

}

import com.fasterxml.jackson.core.JsonFactory;

import com.fasterxml.jackson.databind.JsonNode;

import com.fasterxml.jackson.databind.ObjectMapper;

​

import java.io.IOException;

​

public class JavaJacksonPrettyPrint {

​

    public static void main(String[] args) throws IOException {

​

        String json = "{\"name\":\"john\",\"age\":23,\"salary\":5000,\"skills\":[\"java\",\"js\"]}";

        System.out.println("Normal json:");

        System.out.println(json);

        System.out.println();

        JsonNode rootNode = new ObjectMapper(new JsonFactory()).readTree(json);

        ObjectMapper mapper = new ObjectMapper();

​

        String prettyJson = mapper

                .writerWithDefaultPrettyPrinter() // <----- enable pretty print

                .writeValueAsString(rootNode);

​

        System.out.println("Pretty print:");

        System.out.println(prettyJson);

    }

}

Normal json:

{"name":"john","age":23,"salary":5000,"skills":["java","js"]}

​

Pretty print:

{

  "name" : "john",

  "age" : 23,

  "salary" : 5000,

  "skills" : [ "java", "js" ]

}