从spring可以返回字节数组：

File f = new File("/path/to/the/file");
byte[] file = Files.readAllBytes(f.toPath());

HttpHeaders headers = new HttpHeaders();
headers.set("Content-Disposition", "attachment; filename=\"" + f.getName() +".wav\"");
ResponseEntity<byte[]> response = new ResponseEntity(file, headers, HttpStatus.OK);

return response;

然后在javascript中获得它，如下所示：

import fileDownload from 'js-file-download';

const { data } =  await axios.get(`http://api.url`, {
        responseType: 'arraybuffer',
        headers: { 'Accept': '*/*', 'Content-Type': 'audio/wav' }
    }).then(resp => resp);
    const blob = new Blob([data], {
        type: 'audio/wav'
    })
    const url = URL.createObjectURL(blob);

    fetch(url)
        .then(res => res.blob())
        .then(blob => fileDownload(blob, 'your_filename'jj
        .catch(e => console.log('ERROR DOWNLOADING AUDIO FILE'));

我用过react和axios，但我希望你能