React 和 Typescript，哪个类型用于 Axios 响应? [英] React and Typescript, which types for Axios response?

问题描述

我正在尝试从返回此的 API 中显示一个简单的用户列表:

I am trying to present a simple user list from an API which returns this:

[{"UserID":2,"FirstName":"User2"},{"UserID":1,"FirstName":"User1"}]

我不完全理解如何处理带有类型的 Axios 响应.打字稿错误是

I do not understand fully how to handle Axios responses with types. The Typescript error is

Type '{} | { id: number; firstName: string; }' is not assignable to type 'IntrinsicAttributes & UserListProps & { children?: ReactNode; }'.
Property 'items' is missing in type '{}' but required in type 'UserListProps'.

来自下面 Users.tsx 文件中的 元素.我的User 界面有问题吗?

from the <UserList /> element in the Users.tsx file below. Is my User interface wrong?

import React, {useEffect, useState, Fragment } from 'react';
import UserList from './UserList';
import axios, {AxiosResponse} from 'axios';

interface User {
    id: number;
    firstName: string;
}

const Users: React.FC = (props) => {
    const [users, setUserList] = useState<User>();

    useEffect(() => {
        // Use [] as second argument in useEffect for not rendering each time
        axios.get('http://localhost:8080/admin/users')
        .then((response: AxiosResponse) => {
            console.log(response.data);
            setUserList( response.data );
        });
    }, []);

    return (
        <Fragment>
            <UserList {...users} />
        </Fragment>

    );
};
export default Users;

下面是我的UserList.tsx.

import React, {Fragment } from 'react';

interface UserListProps {
    items: {id: number, firstName: string}[];
};

const UserList: React.FC<UserListProps> = (props) => {
    return (
        <Fragment>
            <ul>
            {props.items.map(user => (
                <li key={user.id}>
                    <span>{user.firstName}</span>
                    {/* not call delete function, just point to it
                    // set this to null in bind() */}
                </li>
            ))}
            </ul>
        </Fragment>
    );
};

export default UserList;

推荐答案

有axios/index.d.ts

get<T = never, R = AxiosResponse<T>>(url: string, config?: AxiosRequestConfig<T>): Promise<R>;

示例

interface User {
    id: number;
    firstName: string;
}


axios.get<User[]>('http://localhost:8080/admin/users')
        .then(response => {
            console.log(response.data);
            setUserList( response.data );
        });

--编辑

我认为您将列表以错误的方式传递给子组件.

I think you are passing list the wrong way to child component.

const [users, setUserList] = useState<User[]>([]);

<UserList items={users} />

interface UserListProps {
    items: User[];
};

const UserList: React.FC<UserListProps> = ({items}) => {
    return (
        <Fragment>
            <ul>
            {items.map(user => (
                <li key={user.id}>
                    <span>{user.firstName}</span>
                </li>
            ))}
            </ul>
        </Fragment>
    );
};

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