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浣跨敤org.json搴擄細

import org.json.JSONObject;

public class JsonExample {
    public static void main(String[] args) {
        String jsonStr = "{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";

        JSONObject jsonObject = new JSONObject(jsonStr);
        for (String key : jsonObject.keySet()) {
            Object value = jsonObject.get(key);
            System.out.println(key + ": " + value);
        }
    }
}

浣跨敤com.fasterxml.jackson.databind搴擄細

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

public class JsonExample {
    public static void main(String[] args) throws Exception {
        String jsonStr = "{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";

        ObjectMapper objectMapper = new ObjectMapper();
        JsonNode jsonNode = objectMapper.readTree(jsonStr);
        jsonNode.fields().forEachRemaining(entry -> {
            String key = entry.getKey();
            JsonNode value = entry.getValue();
            System.out.println(key + ": " + value);
        });
    }
}

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