使用FileSystemResource强制文件下载文件时如何设置'Content-Disposition'和'Filename'？ [英] How to set 'Content-Disposition' and 'Filename' when using FileSystemResource to force a file download file?

问题描述

设置 Content-Disposition = attachment 和 filename = xyz.zip 使用Spring 3 FileSystemResource ？

What is the most appropriate, and standard, way to set the Content-Disposition=attachment and filename=xyz.zip using Spring 3 FileSystemResource?

行动如下：

@ResponseBody
@RequestMapping(value = "/action/{abcd}/{efgh}", method = RequestMethod.GET, produces = "application/zip")
@PreAuthorize("@authorizationService.authorizeMethod()")
public FileSystemResource doAction(@PathVariable String abcd, @PathVariable String efgh) {

    File zipFile = service.getFile(abcd, efgh);

    return new FileSystemResource(zipFile);
}

虽然文件是zip文件，但浏览器总是下载文件，但是我想明确提到该文件为附件，并提供与文件实际名称无关的文件名。

Although the file is a zip file so the browser always downloads the file, but I would like to explicitly mention the file as attachment, and also provide a filename that has nothing to do with the files actual name.

这个问题可能有解决方法，但我想知道正确的Spring和 FileSystemResource 方法来实现这一目标。

There might be workarounds for this problem, but I would like to know the proper Spring and FileSystemResource way to achieve this goal.

PS这里使用的文件是一个临时文件，在JVM存在时标记为删除。

P.S. The file that is being used here is a temporary file, marked for deletion when the JVM exists.

推荐答案

@RequestMapping(value = "/action/{abcd}/{efgh}", method = RequestMethod.GET)
@PreAuthorize("@authorizationService.authorizeMethod(#id)")
public HttpEntity<byte[]> doAction(@PathVariable ObjectType obj, @PathVariable Date date, HttpServletResponse response) throws IOException {
    ZipFileType zipFile = service.getFile(obj1.getId(), date);

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
    response.setHeader("Content-Disposition", "attachment; filename=" + zipFile.getFileName());

    return new HttpEntity<byte[]>(zipFile.getByteArray(), headers);
}

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