我正在开发一个Rest API,负责将csv文件作为响应返回。
这是我的Api界面:
@Api(value = Constantes.REPORTS)
public interface ExtractFileApi {
@RequestMapping(value = Constantes.REPORTS_URL, produces = "application/csv", method = RequestMethod.GET)
public ResponseEntity<InputStreamResource> getExtractFile() throws IOException;
}
这是我的界面实现:
@RestController
public class ExtractFileApiController implements ExtractFileApi {
@Override
public ResponseEntity<InputStreamResource> getExtractFile() throws IOException {
ClassPathResource pdfFile = new ClassPathResource("pdf-sample.csv");
HttpHeaders headers = new HttpHeaders();
headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
headers.add("Pragma", "no-cache");
headers.add("Expires", "0");
return ResponseEntity.ok().headers(headers).contentLength(pdfFile.contentLength())
.contentType(MediaType.parseMediaType("application/octet-stream"))
.body(new InputStreamResource(pdfFile.getInputStream()));
}
目前,我的API会返回一个下载文件的链接,但我不知道如何强制将响应强制为CSV文件(file.csv)。
任何人都可以帮助我吗?
答案 0 :(得分:0)
您需要将返回类型更改为 void ,然后在结尾使用以下代码
Path path = Paths.get(pdfFile.getPath());
response.setHeader("content-disposition", "attachment; filename="
+ path.getFileName().toString().replace(" ", "_"));
try {
response.setContentType(Files.probeContentType(path));
response.setContentLength((int) Files.size(path));
// Copy bytes from source to destination, closes both streams.
FileCopyUtils.copy(Files.newInputStream(path),
response.getOutputStream());
} catch (IOException e) {
LOGGER.error("fetching file failed", e);
response.setStatus(500);
}
答案 1 :(得分:-1)
尝试将生产输出MIME类型更改为text/csv
。