\u524d\u7aef\u8bf7\u6c42 vue<\/p>\n
Axios({\n method: 'get',\n url: 'http:\/\/IP\u5730\u5740:\u7aef\u53e3\/previewFileStream',\n params: {\n filePath: '\/home\/NSY1312-02-06-00-00-06A.PDF',\n },\n headers:{\n 'Content-Type': 'application\/json;charset=UTF-8',\n },\n responseType: 'arraybuffer',\n }).then(function (res) {\n console.log(res);\n });<\/code><\/pre>\n\u540e\u7aef java<\/p>\n
@GetMapping("\/previewFileStream")\n public ResponseEntity<byte[]> previewFileStream(@RequestParam String filePath) {\n try {\n File file = new File(filePath);\n if (!file.exists()) {\n return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);\n }\n\n FileInputStream fileInputStream = new FileInputStream(file);\n ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();\n byte[] buffer = new byte[1024];\n int bytesRead;\n\n while ((bytesRead = fileInputStream.read(buffer)) != -1) {\n byteArrayOutputStream.write(buffer, 0, bytesRead);\n }\n\n byte[] fileContent = byteArrayOutputStream.toByteArray();\n\n HttpHeaders headers = new HttpHeaders();\n headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + file.getName());\n headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);\n\/\/ headers.add("content-type", "application\/pdf;chartset=UTF-8");\n\/\/ headers.add("Content-Disposition", "fileName=" + URLEncoder.encode(file.getName(), "utf-8"));\n headers.setContentLength(fileContent.length);\n\n return ResponseEntity.ok()\n .headers(headers)\n .body(fileContent);\n } catch (FileNotFoundException e) {\n return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);\n } catch (IOException e) {\n return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(null);\n }\n }<\/code><\/pre>\n