我正在努力使一个简单的文件上传成为可能,但Spring不想和我一起玩。
这是文件上传的端点 - 目前没有做很多事情:
@PostMapping(WordEmbeddingApiPaths.UPLOAD_MODEL)
@RequestMapping(method=RequestMethod.POST, consumes = {"multipart/form-data"})
public ResponseEntity<WordVectorListDto> uploadModel(
@ModelAttribute("file") MultipartFile file,
// @RequestBody Object obj,
RedirectAttributes redirectAttributes) {
LOGGER.debug("POST uploadModel");
return new ResponseEntity<WordVectorListDto>((WordVectorListDto)null, HttpStatus.OK);
}
我尝试了几件事,但最终都出现了不同的错误。我刚刚尝试使用@RequestBody
,因为我认为这可能就是诀窍,但后来我得到一个例外:
Content type 'multipart/form-data;boundary=----WebKitFormBoundarycV8dFSvDV6U9OwJq' not supported
或
Content type 'multipart/form-data' not supported
取决于我刚尝试的内容。
如果我选择@RequestPart("file") MultipartFile file
,我会看到
Required request part 'file' is not present
与@RequestParam("file")
类似。
我不知道这有多难,但我希望有人可以告诉我如何从客户端获取该文件。
下面你可以看到我发送给端点的请求:
此请求可以吗?
网络客户端:
var uploader = $scope.uploader = new FileUploader({
url: 'http://localhost:8080/rest-api/dl4j/we/uploadModel'
});
uploader.onAfterAddingFile = function($modelFile) {
console.info('onAfterAddingFile', $modelFile);
var fd = new FormData();
fd.append('file', $modelFile.file);
$http.post($modelFile.url, fd, {
headers: {
'Content-Type': undefined
},
transformRequest: angular.identity
})
.then(
function (data) {
alert("upload success");
},
function (data, status) {
alert("upload error");
}
);
};
的index.html
<label class="btn btn-default btn-file" style="float:right;">
Upload
<input
type="file"
style="display: none;"
name="file"
multiple
nv-file-select
uploader="uploader">
</label>
答案 0 :(得分:1)
以下是我的意思:
@RequestMapping(value="/uploadFile", method=RequestMethod.POST)
public @ResponseBody String handleFileUpload(
@RequestParam("file") MultipartFile file){
String name = "test11";
if (!file.isEmpty()) {
try {
byte[] bytes = file.getBytes();
BufferedOutputStream stream =
new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded")));
stream.write(bytes);
stream.close();
return "You successfully uploaded " + name + " into " + name + "-uploaded !";
} catch (Exception e) {
return "You failed to upload " + name + " => " + e.getMessage();
}
} else {
return "You failed to upload " + name + " because the file was empty.";
}
}
并且不要忘记注册多部分解析器:
@Bean
public MultipartResolver multipartResolver() {
org.springframework.web.multipart.commons.CommonsMultipartResolver multipartResolver = new org.springframework.web.multipart.commons.CommonsMultipartResolver();
multipartResolver.setMaxUploadSize(10000000);
return multipartResolver;
}
这里是html代码...看一下输入字段的名称/ ID .. 要上传的文件:
Name1: <input type="text" name="name">
File2 to upload: <input type="file" name="file">
Name2: <input type="text" name="name">
<input type="submit" value="Upload"> Press here to upload the file!
</form>