在java中读取json文件中的json对象数组的属性。

[
    {
        "name": "John",
        "age": 30
    },
    {
        "name": "Anna",
        "age": 22
    }
]

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.13.0</version>
</dependency>

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

import java.io.File;
import java.io.IOException;

public class JsonReader {
    public static void main(String[] args) {
        ObjectMapper objectMapper = new ObjectMapper();
        try {
            // 读取JSON文件
            JsonNode rootNode = objectMapper.readTree(new File("data.json"));

            // 遍历JSON数组
            if (rootNode.isArray()) {
                for (JsonNode node : rootNode) {
                    String name = node.path("name").asText();
                    int age = node.path("age").asInt();
                    System.out.println("Name: " + name + ", Age: " + age);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}