我正在尝试使用 spring-mvc、spring-boot 和 spring 安全性构建一个小型 Web 应用程序。只使用一个 Controller ,服务端点之一是让用户下载由 Web 应用程序生成的 docx 文件。我的逻辑代码运行良好,问题是当我想将Headers添加到HttpServletResponse时,addHeader()和setHeader()不起作用,我只想为下载文件指定一个名称。我打印了一些日志,但不知道为什么这不起作用。
这是我的 Controller 的部分代码:
@Controller
public class ImportExportController {
private final static Logger LOGGER = LoggerFactory.getLogger(ImportExportController.class);
@Autowired
private WordProcessor wordProcessor;
@RequestMapping("/export")
public void export(@RequestParam(value = "domainName", required = true) String domainName,
@RequestParam(value = "projectName", required = true) String projectName,
@RequestParam(value = "testFolderId", required = true) int testFolderId,
HttpServletRequest request, HttpServletResponse response) {
String exportedFileName = "exportedTC_" + domainName + "_" + projectName + "_"
+ Integer.toString(testFolderId) + ".docx";
try {
extendExpiredALMSession();
SaveToZipFile saver = wordProcessor.ExportToWord(domainName, projectName,
Integer.toString(testFolderId));
saver.save(response.getOutputStream());
response.setContentType("application/vnd.openxmlformats-officedocument.wordprocessingml.document");
LOGGER.info("exportedFileName: " + exportedFileName);
LOGGER.info("contains: " + response.containsHeader("Content-Disposition"));
response.addHeader("Content-Disposition", "attachment; filename=\"" + exportedFileName + "\"");
for (String name : response.getHeaderNames()) {
LOGGER.info("Header: " + name);
}
LOGGER.info("Date Header:" + response.getHeader("Date"));
LOGGER.info("Content-Disposition header: " + response.getHeader("Content-Disposition"));
LOGGER.info("ContentType: " + response.getHeader("ContentType"));
response.flushBuffer();
} catch (RequestFailureException | RESTAPIException | InvalidDataException | UnLoginException
| UnAuthorizedOperationException | IOException | Docx4JException | URISyntaxException e) {
e.printStackTrace();
}
}
}
这是我得到的日志,你可以看到标题“Content-Disposition”和“ContentType”都是空的。
2014-05-07_13:35:05.646 INFO c.c.p.a.w.w.ImportExportController - exportedFileName: exportedTC_DEFAULT_JIRA_Test_CPL5_4520.docx
2014-05-07_13:35:05.646 INFO c.c.p.a.w.w.ImportExportController - contains: false
2014-05-07_13:35:05.646 INFO c.c.p.a.w.w.ImportExportController - Header: X-Content-Type-Options
2014-05-07_13:35:05.646 INFO c.c.p.a.w.w.ImportExportController - Header: X-XSS-Protection
2014-05-07_13:35:05.646 INFO c.c.p.a.w.w.ImportExportController - Header: Cache-Control
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: Pragma
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: Expires
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: X-Frame-Options
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: X-Application-Context
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: Transfer-Encoding
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Header: Date
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Date Header:Wed, 07 May 2014 17:35:05 GMT
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - Content-Disposition header: null
2014-05-07_13:35:05.647 INFO c.c.p.a.w.w.ImportExportController - ContentType: null
谢谢阅读。任何帮助将不胜感激。
最佳答案
今天我也遇到了完全相同的问题,就像这里描述的那样。我仔细观察了一下,发现在 this tutorial 中必须在内容之前设置标题。然后我切换了线路,一切运行良好,就像一个魅力。
在你的情况下,我会建议推线saver.save(response.getOutputStream());
之前的 response.flushBuffer();
在所有 header 都已经设置之后。