javascript - 只有当我在 Spotify API 上发出第一次获取请求（单击搜索方法）时，我才会得到 401，之后就可以正常工作了。请帮我解决它

Question

当我提出第一个请求时，似乎我没有授权。但是在那之后的所有其他搜索，我的授权都很好。为什么？我如何解决它？

const clientId = ''; // Insert client ID here.
    const redirectUri = 'http://localhost:3000/'; // Have to add this to your accepted Spotify redirect URIs on the Spotify API.
    let accessToken;
    
    const Spotify = {
      getAccessToken() {
        if (accessToken) {
          return accessToken;
        }
    
        const accessTokenMatch = window.location.href.match(/access_token=([^&]*)/);
        const expiresInMatch = window.location.href.match(/expires_in=([^&]*)/);
        
        if (accessTokenMatch && expiresInMatch) {
          accessToken = accessTokenMatch[1];
          const expiresIn = Number(expiresInMatch[1]);
          window.setTimeout(() => accessToken = '', expiresIn * 1000);
          window.history.pushState('Access Token', null, '/'); // This clears the parameters, allowing us to grab a new access token when it expires.
          return accessToken;
        } else {
          const accessUrl = `https://accounts.spotify.com/authorize?client_id=${clientId}&response_type=token&scope=playlist-modify-public&redirect_uri=${redirectUri}`;
          window.location = accessUrl;
        }
      },
    
      search(term) {
        const accessToken = Spotify.getAccessToken();
        return fetch(`https://api.spotify.com/v1/search?type=track&q=${term}`, {
          headers: {
            Authorization: `Bearer ${accessToken}`
          }
        }).then(response => {
          return response.json();
        }).then(jsonResponse => {
          if (!jsonResponse.tracks) {
            return [];
          }
          return jsonResponse.tracks.items.map(track => ({
            id: track.id,
            name: track.name,
            artist: track.artists[0].name,
            album: track.album.name,
            uri: track.uri
          }));
        });
      },
    
      savePlaylist(name, trackUris) {
        if (!name || !trackUris.length) {
          return;
        }
    
        const accessToken = Spotify.getAccessToken();
        const headers = { Authorization: `Bearer ${accessToken}` };
        let userId;
    
        return fetch('https://api.spotify.com/v1/me', {headers: headers}
        ).then(response => response.json()
        ).then(jsonResponse => {
          userId = jsonResponse.id;
          return fetch(`https://api.spotify.com/v1/users/${userId}/playlists`, {
            headers: headers,
            method: 'POST',
            body: JSON.stringify({name: name})
          }).then(response => response.json()
          ).then(jsonResponse => {
            const playlistId = jsonResponse.id;
            return fetch(`https://api.spotify.com/v1/users/${userId}/playlists/${playlistId}/tracks`, {
              headers: headers,
              method: 'POST',
              body: JSON.stringify({uris: trackUris})
            });
          });
        });
      }
    };
    
    export default Spotify;