@Override
public ThemeProperty fetch(Object source) {
    final var themeZipLink = source.toString();

    // build http request
    final var request = HttpRequest.newBuilder()
        .uri(URI.create(themeZipLink))
        .timeout(Duration.ofMinutes(2))
        .GET()
        .build();

    try {
        // request from remote
        log.info("Fetching theme from {}", themeZipLink);
        var inputStreamResponse =
            httpClient.send(request, HttpResponse.BodyHandlers.ofInputStream());
        var inputStream = inputStreamResponse.body();

        // unzip zip archive
        try (var zipInputStream = new ZipInputStream(inputStream)) {
            var tempDirectory = FileUtils.createTempDirectory();
            log.info("Unzipping theme {} to {}", themeZipLink, tempDirectory);
            unzip(zipInputStream, tempDirectory);

            // resolve theme property
            return ThemePropertyScanner.INSTANCE.fetchThemeProperty(tempDirectory)
                .orElseThrow(() -> new ThemePropertyMissingException("主题配置文件缺失！请确认后重试。"));
        }
    } catch (InterruptedException | IOException e) {
        throw new RuntimeException("主题拉取失败！（" + e.getMessage() + "）", e);
    }
}

@PostMapping("fetching")
@ApiOperation("Fetches a new theme")
public ThemeProperty fetchTheme(@RequestParam("uri") String uri) {
    return themeService.fetch(uri);
}

POST /api/admin/themes/fetching?uri=http://127.0.0.1:port/name.zip HTTP/1.1

{}