我正在使用 Spring boot 2.0.1,我正在尝试使用 dropzone 上传多个文件。当我在 Dropzone.js
上使用 uploadMultiple: false
时,一切工作正常。当我设置 uploadMultiple: true
时,我的 Controller 停止工作。
Controller 类如下:
@PostMapping(value = "/img/upload")
public ResponseEntity<?> fileUpload(@RequestParam("file") MultipartFile[] files){
System.out.println(files.length);
for (MultipartFile file : files) {
try {
file.transferTo(new File("/opt/img/" + file.getOriginalFilename()));
System.out.println(file.getOriginalFilename());
} catch (IOException e) {
e.printStackTrace();
}
}
return new ResponseEntity<>("File Uploaded Successfully.", HttpStatus.OK);
}
文件不超过1MB,我的设置是
spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB
我上传文件时的请求 header :
------WebKitFormBoundaryihPcX9WHR5UA9jGD
Content-Disposition: form-data; name="file[0]"; filename="cars-02-01.png"
Content-Type: image/png
------WebKitFormBoundaryihPcX9WHR5UA9jGD
Content-Disposition: form-data; name="file[1]"; filename="Screenshot from 2018-05-03 23-31-53.jpg"
Content-Type: image/jpeg
一切看起来都很完美。我还是找不到这个问题的原因?
最佳答案
看来我应该使用MultipartHttpServletRequest
而不是MultipartFile[]文件
。我将方法更改为:
@PostMapping(value = "/img/upload")
public ResponseEntity<?> fileUpload(MultipartHttpServletRequest request) {
Map<String, MultipartFile> fileMap = request.getFileMap();
for (MultipartFile file : fileMap.values()) {
try {
file.transferTo(new File("/opt/img/" + file.getOriginalFilename()));
System.out.println(file.getOriginalFilename());
} catch (IOException e) {
e.printStackTrace();
}
}
return new ResponseEntity<>("File Uploaded Successfully.", HttpStatus.OK);
}
关于ajax - Spring mvc使用AJAX一次上传多个文件不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50320177/