从数组中获取所有ID的参数

const array = [{ id: 1, name: 'John' }, { id: 2, name: 'Jane' }, { id: 3, name: 'Mike' }];

const ids = array.map(item => item.id);

console.log(ids); // 输出: [1, 2, 3]

array = [{'id': 1, 'name': 'John'}, {'id': 2, 'name': 'Jane'}, {'id': 3, 'name': 'Mike'}]

ids = [item['id'] for item in array]

print(ids)  # 输出: [1, 2, 3]

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] args) {
        List<Object> array = Arrays.asList(
                new MyClass(1, "John"),
                new MyClass(2, "Jane"),
                new MyClass(3, "Mike")
        );

        List<Integer> ids = array.stream()
                .map(item -> ((MyClass) item).getId())
                .collect(Collectors.toList());

        System.out.println(ids); // 输出: [1, 2, 3]
    }

    static class MyClass {
        private int id;
        private String name;

        public MyClass(int id, String name) {
            this.id = id;
            this.name = name;
        }

        public int getId() {
            return id;
        }

        public String getName() {
            return name;
        }
    }
}