发布POST请求Spotify API(Issue with POST Request To Spotify API)

 我正在研究一个Web应用程序，您可以在其中搜索Spotify库，将歌曲添加到播放列表中，然后将该播放列表添加到Spotify帐户。 除了通过POST请求将播放列表保存到Spotify API之外，一切似乎都在进行中。 它给了我一个“400错误请求”错误。 我可能只是错过了一些小的，任何想法？ 请求方法： 
 
async savePlaylist(name, trackURIs) {
        if(accessToken === undefined) {
            this.getAccessToken();
        }
        if (name === 'New Playlist' || name === undefined || trackURIs === undefined) {
            return;
        } else {
            let userAccessToken = this.getAccessToken();
            let headers = {Authorization: `Bearer ${userAccessToken}`};
            let userId = await this.findUserId();
            let playlistID;
            fetch(`https://api.spotify.com/v1/users/${userId}/playlists`, {
                method: 'POST',
                headers: {
                    Authorization: `Bearer ${accessToken}`,
                    "Content-Type": 'application/json'
                },
                body: {
                    name: name
                }
            }).then(response => {return response.json()}
            ).then(playlist => {
                playlistID = playlist.id;
            });
        }
    },
 
 如果您需要查看我正在从事的分支的回购，可以在这里找到。 
 
 编辑：可能需要API端点文档 

I'm working on a web application where you can search the Spotify Library, add songs to a playlist, then add that playlist to your Spotify Account. Everything seems to be working besides saving the Playlist through a POST request to the Spotify API. It gives me a "400 Bad Request" Error. I probably just missed something small, any ideas? The request method:
 
async savePlaylist(name, trackURIs) {
        if(accessToken === undefined) {
            this.getAccessToken();
        }
        if (name === 'New Playlist' || name === undefined || trackURIs === undefined) {
            return;
        } else {
            let userAccessToken = this.getAccessToken();
            let headers = {Authorization: `Bearer ${userAccessToken}`};
            let userId = await this.findUserId();
            let playlistID;
            fetch(`https://api.spotify.com/v1/users/${userId}/playlists`, {
                method: 'POST',
                headers: {
                    Authorization: `Bearer ${accessToken}`,
                    "Content-Type": 'application/json'
                },
                body: {
                    name: name
                }
            }).then(response => {return response.json()}
            ).then(playlist => {
                playlistID = playlist.id;
            });
        }
    },
 
If you need to take a look at the repo for the branch I'm working on, it can be found here.
 
EDIT: Might need the API Endpoint Documentation

原文：https://stackoverflow.com/questions/48604037