小能豆

React 和 TypeScript—哪种类型适合 Axios 响应?

javascript

我正在尝试通过 API 呈现一个简单的用户列表,该列表返回以下内容:

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

我不完全了解如何处理带有类型的 Axios 响应。TypeScript 错误是

类型’{} | { id: number; firstName: string; }’ 不能分配给类型’IntrinsicAttributes & UserListProps & { children?: ReactNode; }’。

类型“{}”中缺少属性“items”,但类型“UserListProps”中需要该属性。

来自下面文件<UserList />中的元素Users.tsx。我的User界面错了吗?

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;

以下是我的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;

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2024-06-07

共1个答案

小能豆

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

例子

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


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

我认为您以错误的方式将列表传递给子组件。

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>
    );
};
2024-06-07