无法使用JSF下载excel文件[重复]

Question

嗨，我一直试图写代码，这样我就可以生成一个excel表，也可以下载当用户点击下载按钮.....我已经成功地生成了excel表，但我尝试下载同样的，但我没有成功。

我使用的方法是：

public void download() throws IOException {
    File file = new File("D:\\pdf\\carrierReport7.xls");

    FacesContext facesContext = FacesContext.getCurrentInstance();

    HttpServletResponse response = (HttpServletResponse) facesContext.getExternalContext().getResponse();

    response.setHeader("Content-Disposition", "attachment;filename=" + file.getName());
    response.setHeader("Content-Type", "application/vnd.ms-excel");

    OutputStream outputStream = response.getOutputStream();

    FileInputStream fileInputStream = new FileInputStream(file);

    byte[] bytesBuffer = new byte[2048];

    int bytesRead = 0;

    while ((bytesRead = fileInputStream.read(bytesBuffer)) > 0) {
        outputStream.write(bytesBuffer, 0, bytesRead);
    }

    outputStream.flush();

    fileInputStream.close();
    outputStream.close();

    facesContext.responseComplete();
}

Answer 1

我不知道您是否检查了这个，但是ajax=“false”必须在CommandButton中声明...

<p:commandButton ajax="false" 
                 ..........
</p:commandButton>