[JAVA] I tried using OnlineConverter with SpringBoot + JODConverter


A memo when using jodConverter with OnlineConverter. Since SpringBoot was used, it is implemented using JODConverter Spring Boot Starter.


OnlineConverter caller implementation


    enabled: true
    url:[URL of Online Converter server]

OnlineConverter server implementation


  enabled: true
  officeHome:[LibreOffice installation destination]
public class SampleController {
  private DocumentConverter documentConverter;

  @RequestMapping(path = "/api/jodconverter/lool/convert-to/{outputExtension}", method = RequestMethod.POST)
  public Resource convert(
      @RequestParam("data") MultipartFile file,
      @PathVariable("outputExtension") String outputExtension
  ) throws IOException, OfficeException {
    //Get file information before conversion
    String inputExtension = FilenameUtils.getExtension(file.getOriginalFilename());
    DocumentFormatRegistry registry = this.documentConverter.getFormatRegistry();
    DocumentFormat inputFormat = registry.getFormatByExtension(inputExtension);
    if (inputFormat == null) {
      inputFormat = registry.getFormatByExtension("xlsx");

    //Post-conversion extension setting
    DocumentFormat outputFormat = registry.getFormatByExtension(outputExtension);

    //Conversion process
    try (
        InputStream is = file.getInputStream();
        ByteArrayOutputStream os = new ByteArrayOutputStream();
    ) {
      return new ByteArrayResource(os.toByteArray());
    } catch (Exception e) {
    return null;


I haven't had a chance to use OnlineConverter before, so I learned how to use it.

However, LocalConverter is easier to install because there is no server implementation when using OnlineConverter. I wonder if I will use it unless there is a good reason. .. ..

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