Java 无法从web服务下载xlsx

我试图从基于RESTEasy的web服务下载使用ApacheXSSF生成的xlsx文件

我可以下载文件，但双击打开时，显示文件无法打开：

以下是源代码：

Web服务控制器：

@GET
@Path(/download)
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response downloadFile() {

    ByteArrayOutputStream baos = myService.processGbiValidationExceptions();

    ResponseBuilder response = Response.ok((Object) baos.toByteArray());
    response.header("Content-Disposition", "attachment;filename=My_File.xlsx");
    return response.build();
}

public ByteArrayOutputStream processGbiValidationExceptions() {
    XSSFWorkbook workbook = new XSSFWorkbook();

    // code to write to workbook


    // Create stream
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {
        workbook.write(baos);
    } catch (IOException e) {
        LOGGER.error("Error occurred while writing workbook to stream", e);
        throw new IptException(e);
    }

    return baos;
}

服务：

@GET
@Path(/download)
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response downloadFile() {

    ByteArrayOutputStream baos = myService.processGbiValidationExceptions();

    ResponseBuilder response = Response.ok((Object) baos.toByteArray());
    response.header("Content-Disposition", "attachment;filename=My_File.xlsx");
    return response.build();
}

public ByteArrayOutputStream processGbiValidationExceptions() {
    XSSFWorkbook workbook = new XSSFWorkbook();

    // code to write to workbook


    // Create stream
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try {
        workbook.write(baos);
    } catch (IOException e) {
        LOGGER.error("Error occurred while writing workbook to stream", e);
        throw new IptException(e);
    }

    return baos;
}

有没有线索表明我在做什么？谢谢

---

附言：我在Mac上

我以前下载文件时使用的客户端代码几乎没有问题。现在，我正在使用它，它的工作

代码如下：

 import download from 'downloadjs';    
    .
    .
    .
    fetch(FETCH_URL, {
      method: 'GET',
      dataType: 'json',
      credentials: 'include'
    }).then(response => {
        if(response.status === 200) {
            return response.blob();
        }
      }, () => {
        // when error do something
      }
    ).then(
      // Following line helps download
      blob => download(blob, "someexcel.xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
    )

此外，MIME类型需要设置为

application/vnd.openxmlformats officedocument.spreadsheetml.sheet

，以便下载

xlsx

文件：

@Produces("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")

干杯