使用JSON和ArrayNode遍历JSON中的数组。

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;

public class JsonArrayTraversal {
    public static void main(String[] args) {
        String json = "{\"users\": [{\"name\": \"Alice\", \"age\": 25}, {\"name\": \"Bob\", \"age\": 30}]}";

        try {
            ObjectMapper objectMapper = new ObjectMapper();
            JsonNode rootNode = objectMapper.readTree(json);
            ArrayNode usersNode = (ArrayNode) rootNode.get("users");

            for (JsonNode userNode : usersNode) {
                String name = userNode.get("name").asText();
                int age = userNode.get("age").asInt();
                System.out.println("Name: " + name + ", Age: " + age);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Name: Alice, Age: 25
Name: Bob, Age: 30