Java Json对象到Json数组的转换

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.12.4</version>
</dependency>

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

public class Main {
    public static void main(String[] args) {
        ObjectMapper mapper = new ObjectMapper();
        
        // 创建Json对象
        JsonNode jsonNode = mapper.createObjectNode();
        ((ObjectNode) jsonNode).put("name", "John");
        ((ObjectNode) jsonNode).put("age", 25);
        
        try {
            // 将Json对象转换为Json数组
            String jsonArray = mapper.writeValueAsString(jsonNode);
            System.out.println(jsonArray);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
    }
}

<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.8.9</version>
</dependency>

import com.google.gson.Gson;
import com.google.gson.JsonObject;

public class Main {
    public static void main(String[] args) {
        Gson gson = new Gson();
        
        // 创建Json对象
        JsonObject jsonObject = new JsonObject();
        jsonObject.addProperty("name", "John");
        jsonObject.addProperty("age", 25);
        
        // 将Json对象转换为Json数组
        String jsonArray = gson.toJson(jsonObject);
        System.out.println(jsonArray);
    }
}

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.78</version>
</dependency>

import com.alibaba.fastjson.JSONObject;

public class Main {
    public static void main(String[] args) {
        // 创建Json对象
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("name", "John");
        jsonObject.put("age", 25);
        
        // 将Json对象转换为Json数组
        String jsonArray = jsonObject.toJSONString();
        System.out.println(jsonArray);
    }
}