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[英]Generate Zip File - download PDF from Url and Generate Zip to Download in Browser - Broken PDF
[英]unable to Generate a ZIP file on the fly and send it to the user’s browser for download
我有音频剪辑的URL。 我想从它们的URL下载所有这些剪辑,并将所有这些剪辑放在单个zip文件中。 如果我在代码中指定了硬编码路径,则可以使用所有剪辑在zip格式的指定位置成功下载该路径。 但是,我想生成一个弹出窗口,提示用户指定下载该zip文件的路径。 这是我的代码:
ByteArrayOutputStream baos = new ByteArrayOutputStream()
ZipOutputStream zipFile = new ZipOutputStream(baos)
for (int i = 0; i < clipsCount; i++) {
String fileName = getSessionId() + ".mp4";
try {
//Opening Connection to the Downloading Link
URLConnection conn = new URL(sessionToDownload.getConvertedLinkURL()).openConnection();
conn.setRequestProperty("Authorization", "Basic " + encodedString);
//Adding File in the Zipped Resource
def file1Entry = new ZipEntry(fileName);
zipFile.putNextEntry(file1Entry);
//Getting Required File
zipFile << conn.getInputStream();
//Closing Current Zip Entry
zipFile.closeEntry();
println "Session to Download: " + listofId.getAt(i);
} catch (Exception ex) {
println "Exception while Downloading Session: "+ex.getMessage();
}
}
zipFile.close()
response.setHeader("Content-disposition", "attachment; filename=\"/download.zip\" ")
response.setContentType("application/zip");
response.outputStream << baos
response.outputStream.flush()
webRequest.renderView = false;
因此,在Loop中,它会针对每个剪辑进行迭代,下载并使其成为zip文件的一部分。
如果我做错了什么,或者可以通过其他方法实现,请给我指导。 感谢您的时间,考虑和指导。
您的操作应该确实有效。 如果浏览器在响应中看到带有"attachment; filename=aaa.zip"
的值的"Content-disposition"
-header,则会自动打开浏览器的“ Save as..
对话框。
尝试删除引号:
response.setHeader 'Content-disposition', 'attachment; filename=download.zip'
我已经调查了此问题,实际上是由于此处描述的问题而产生的:将多个选定的项目从控制器发送到视图
还有一个问题,它不允许它出现在浏览器端。 这对我有用:
//Setting Response Required Parameters
response.setContentType('APPLICATION/OCTET-STREAM')
response.setHeader('Content-Disposition', 'Attachment;Filename="example.zip"')
InputStream contentStream = null;
ZipOutputStream zip = new ZipOutputStream(response.outputStream);
for (int i = 0; i < listofId.length; i++) {
def sessionToDownload = Sessions.get(listofId.getAt(i));
if (sessionsToDownload != null) {
String fileName = sessionToDownload.getSessionId() + ".mp4";
try {
//Opening Connection to the Downloading Link
URLConnection conn = new URL(sessionToDownload.getConvertedLinkURL()).openConnection();
conn.setRequestProperty("Authorization", "Basic " + encodedString);
//Getting file contents
contentStream = conn.getInputStream();
//Adding File in the Zipped Resource
def file1Entry = new ZipEntry(fileName);
zip.putNextEntry(file1Entry);
zip.write(IOUtils.toByteArray(contentStream));
println "Session to Download: " + fileName;
} catch (Exception ex) {
println "Exception while Downloading Session: " + ex.getMessage();
}
}
}
zip.close();
}
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