EN
Java - parse JSON to Node
6 points
In this short article, we would like to show how to parse JSON to the JsonNode object in Java.
Quick solution:
xxxxxxxxxx1
ObjectMapper objectMapper = new ObjectMapper();2
3
String json = "{\"name\": \"john\"}"; // {"name": "john"}4
JsonNode node = objectMapper.readTree(json);5
6
System.out.println(node.get("name").asText()); // john
As JsonNode we understand, the object returned from a parser is not related to a specific type. The JsonNode can store any JSON described as nodes tree.
Quick solution:
xxxxxxxxxx1
import com.fasterxml.jackson.core.JsonProcessingException;2
import com.fasterxml.jackson.databind.JsonNode;3
import com.fasterxml.jackson.databind.ObjectMapper;4
5
public class Program {6
7
public static void main(String[] args) throws JsonProcessingException {8
9
ObjectMapper objectMapper = new ObjectMapper();10
11
String json = "{\"name\": \"john\", \"email\": \"john@mail.com\"}";12
JsonNode node = objectMapper.readTree(json);13
14
JsonNode nameNode = node.get("name");15
JsonNode emailNode = node.get("email");16
17
System.out.println("name: " + nameNode.asText()); // john18
System.out.println("email: " + emailNode.asText()); // john@mail.com19
}20
}Output:
xxxxxxxxxx1
name: john2
email: john@mail.comHint: to know how to attach
*.jarlib to your project read this article.
Link to the library in the Maven repository:
https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind
