我想要的是當我訪問/getcsv下載一個csv file@RequestMapping(value = "/getcsv", method = RequestMethod.GET)public void getCSV(HttpServletResponse response){ String csv = "a,b"; response.setContentType("text/csv"); //what to do now?}我不知道如何激發csv file包含我的字符串的下載。
2 回答
臨摹微笑
TA貢獻1982條經驗 獲得超2個贊
您可以在響應的輸出流中寫入數據。
@RequestMapping(value = "/getcsv", method = RequestMethod.GET)
public void getCSV(HttpServletResponse response){
String csv = "a,b";
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "fileName.csv");
response.setHeader("Access-Control-Expose-Headers","Authorization, Content-Disposition");
try (PrintWriter pw = new PrintWriter(response.getOutputStream())) {
pw.write(csv);
}
}
弒天下
TA貢獻1818條經驗 獲得超8個贊
您可以嘗試以下代碼。
@PostMapping(value = "/getcsv", produces = MediaType.APPLICATION_OCTET_STREAM_VALUE)
public ResponseEntity<?> downloadFile(@RequestParam("fileName") String fileName) {
String dirPath = "E:/some-directory-path/";
byte[] fileBytes = null;
try {
fileBytes = Files.readAllBytes(Paths.get(dirPath + fileName));
} catch (IOException e) {
e.printStackTrace();
}
return ResponseEntity.ok()
.contentType(MediaType.APPLICATION_OCTET_STREAM)
.header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + fileName + "\"")
.body(fileBytes);
}
您必須設置為 Application Octet Stream 才能下載任何文件。
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