我是React.js中的newby，正在尝试将数据从React中的表单发布到本地服务器。
我检索的数据来自TMDB，它包含具有特定ID的电影的属性。 我在useEffect中使用axios进行get查询，它们运行良好。 然后使用useState设置影片数据。 我用来预先填写表格。这是一个添加电影形式，提交后，应将formData添加到本地服务器json db中。 为此，我使用axios帖子，这是我被卡住的地方。 尝试了很多事情，没有任何效果。 谢谢任何能帮助我的人。
代码如下：
import React, { useState, useEffect } from 'react';
import axios from 'axios';
import { useHistory } from "react-router-dom";
import './AddMovie.scss';
const AddMovieForm = (props) => {
const movieID = props.movie.id;
const [actors, setActors] = useState([]);
const [similarMovies, setSimilarMovies] = useState([]);
const [movies, setMovies] = useState({
title: "",
release_date: "",
categories: [],
description: "",
poster: "",
backdrop: "",
});
/* QUERY FOR THE MOVIE CAST & SIMILAR MOVIES */
const API_KEY = process.env.REACT_APP_API_KEY;
const base_url = `https://api.themoviedb.org/3`;
useEffect(() => {
axios.get(`${base_url}/movie/${movieID}?api_key=${API_KEY}&language=en-US&page=1`)
.then((response) => {
setMovies({
id: response.data.id,
title: response.data.title,
release_date: response.data.release_date,
categories: response.data.genres,
description: response.data.overview,
poster: `https://image.tmdb.org/t/p/w342${response.data.poster_path}`,
backdrop: `https://image.tmdb.org/t/p/w342${response.data.backdrop_path}`,
});
// console.log(response.data, movieData.categories);
}).catch((error) => {
console.log(error);
});
axios.get(`${base_url}/movie/${movieID}/credits?api_key=${API_KEY}`)
.then((r) => {
// console.log(r.data.cast.slice(0, 3));
setActors(r.data.cast.slice(0, 3));
}).catch((error) => {
console.log(error);
});
axios.get(`${base_url}/movie/${movieID}/similar?api_key=${API_KEY}&language=en-US&page=1`)
.then((r) => {
// console.log(r.data.results.slice(0, 3));
setSimilarMovies(r.data.results.slice(0, 3));
}).catch((error) => {
console.log(error);
});
}, [base_url, movieID]);
const history = useHistory();
const imgUrl = "http://image.tmdb.org/t/p/w342";
const actorsData = actors.map(item => {
return ({
name: item.name,
photo: imgUrl + item.profile_path,
character: item.character
}
)
});
const similarMoviesData = similarMovies.map(item => {
return ({
title: item.title,
poster: imgUrl + item.poster_path,
release_date: item.release_date
}
)
});
// console.log(similarMoviesData);
/* FORM */
const formData = {
title: movies.title,
release_date: movies.release_date,
categories: movies.categories.map(c => c.name),
description: movies.description,
poster: movies.poster,
backdrop: movies.backdrop,
actors: actorsData,
similar_movies: similarMoviesData,
id: movies.id
};
const LOCAL_URL = "http://localhost:3000/movies";
const handleSubmit = (event) => {
event.preventDefault();
console.log(formData);
axios.post(LOCAL_URL, formData,
{
headers: {
'Content-Type': 'application/json',
}
})
.then(response => {console.log(response)})
.catch((error) => console.log(error) );
history.push('/');
// setRedirectTo('/movies');
};
return (
<div className={!props.showForm ? "form-wrapper" : "form-wrapper--active"}>
<form onSubmit={handleSubmit}>
{/* MOVIE */}
<div className="form-top-wrapper">
{/* movie title */}
<div className="title-input-wrapper">
<h4>Title</h4>
<div className="title-input">
<input
className=""
type="text"
id="title"
name="title"
value={formData.title}
placeholder=""
required
/>
</div>
</div>
{/* movie release date */}
<div className="release-date-input-wrapper">
<h4>Release Date</h4>
<div className="release-date-input">
<input
className=""
type="text"
id="release-date"
name="release_date"
value={formData.release_date}
placeholder=""
/>
</div>
</div>
</div>
<div className="form-description-wrapper">
{/* movie description */}
<div className="description-input-wrapper">
<h4>Synopsis</h4>
<textarea
className=""
rows="3"
cols="90"
id="description"
name="description"
value={formData.description}
placeholder=""
readOnly
/>
</div>
</div>
<div className="form-bottom-wrapper">
{/* movie categories */}
<div className="form-categories">
<h4>Categories</h4>
<ul className="categories-list">
<li key="">
<label htmlFor="categories">Name</label>
<input
className=""
type="text"
id="categories"
name="categories"
value={formData.categories}
placeholder=""
/>
</li>
</ul>
</div>
{/* ACTORS */}
<div className="form-actors">
<h4>Actors</h4>
<ul className="actors-list">
{actors.map(a => (
<li key={a.id}>
{/* actors name */}
<label htmlFor="actorName">Name</label>
<input
className=""
type="text"
id="actor-name"
name="actors"
value={a.name}
placeholder=""
/>
{/* actors character */}
<label htmlFor="actorCharacter">Characters</label>
<input
className=""
type="text"
id="actor-character"
name="actors"
value={a.character}
placeholder=""
/>
</li>
))}
</ul>
</div>
{/* SIMILAR MOVIES */}
<div className="form-similar-movies">
<h4>Similar Movies</h4>
<ul className="similar-movies-list">
{similarMovies.map(sm => (
<li key={sm.id}>
{/* similar movies title */}
<label htmlFor="similarMovieTitle">Title</label>
<input
className=""
type="text"
id="similar-movie-title"
name="similar_movies"
value={sm.title}
placeholder=""
/>
{/* similar movies release_date */}
<label htmlFor="similarMovieReleaseDate">Release Date</label>
<input
className=""
type="text"
id="similar-movie-release-date"
name="similar_movies"
value={sm.release_date}
placeholder=""
/>
</li>
))}
</ul>
</div>
</div>
<button className="btn btn-info" type="submit">
<span>Ajouter le film à votre bibliothéque</span>
</button>
</form>
</div>
);
};
export default AddMovieForm;