Jackson序列化到模板列表

import com.fasterxml.jackson.databind.ObjectMapper;

public class Main {
    public static void main(String[] args) throws Exception {
        // 创建一个ObjectMapper对象
        ObjectMapper objectMapper = new ObjectMapper();

        // 创建一个Java对象
        Person person = new Person("John", 25);

        // 将Java对象序列化为JSON字符串
        String json = objectMapper.writeValueAsString(person);

        // 打印JSON字符串
        System.out.println(json);
    }
}

class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    // 省略getter和setter方法
}

{"name":"John","age":25}

import com.fasterxml.jackson.databind.ObjectMapper;

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) throws Exception {
        // 创建一个ObjectMapper对象
        ObjectMapper objectMapper = new ObjectMapper();

        // 创建一个包含多个对象的列表
        List<Person> personList = new ArrayList<>();
        personList.add(new Person("John", 25));
        personList.add(new Person("Alice", 30));

        // 将列表序列化为JSON字符串
        String json = objectMapper.writeValueAsString(personList);

        // 打印JSON字符串
        System.out.println(json);
    }
}

class Person {
    private String name;
    private int age;

    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }

    // 省略getter和setter方法
}

[{"name":"John","age":25},{"name":"Alice","age":30}]