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[英]Handler execution resulted in exception: Required MultipartFile parameter 'file' is not present
[英]post error Required MultipartFile [ ] parameter not present
有谁知道我为什么会收到上述错误? 我看不出来为什么? 请在下面查看我的代码,并告知我可以在哪里解决此错误。 目的是将多个文件上传到一个位置。 它曾经用于单个文件,但是看起来formdata或ajax请求仅用于接受一个文件而不是多个文件。 我不在PHP中执行此操作,仅在javascript / java中执行此操作。 请帮忙。
function makeProgress(number){
var url = getRelativeURL("web/fileUpload");
var formData = new FormData();
formData.append('number', number);
fls = document.getElementById("attachmentFileUploadInput").files; //length of files...
console.log(fls);
for(j=0;j<fls.length;j++){
formData.append('files[]', fls[j]); //note files[] not files
}
//formData.append('file', $('input[type=file]')[0].files[0]);
console.log("form data " + formData);
$.ajax({
url : url,
data : formData,
processData : false,
contentType : false,
type : 'POST',
success : function(data) {
FileUploadVisible(true);
$('#attachmentModal').modal('hide')
$(':input','#attachmentModal').val("");
$("#pbarmain").hide();
$("#pbar").hide();
$("#actionPlanDiv").hide();
setObjectEnabled('#Upload',false);
},
error : function(err) {
FileUploadErrorVisible(true);
}
});
}
@Bean(name = "multipartResolver")
public CommonsMultipartResolver commonsMultipartResolver(){
CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver();
commonsMultipartResolver.setDefaultEncoding("utf-8");
commonsMultipartResolver.setMaxUploadSize(5000000); // 5000000 -> 5MB
return commonsMultipartResolver;
}}
@RequestMapping(value = { "/fileUpload" }, method = RequestMethod.POST)
@ResponseBody
public String uploadFile( @RequestParam("number") String number, @RequestParam("files") MultipartFile[] files, MultipartHttpServletRequest req, HttpServletResponse res)
{
for (MultipartFile file : files) {
try {
File directory = new File(UPLOADED_FOLDER + number);
if (! directory.exists()){
directory.mkdir();
}
byte[] bytes = file.getBytes();
Path path = Paths.get(UPLOADED_FOLDER + number + "//" + file.getOriginalFilename());
Files.write(path, bytes);
logger.info("You have successfully uploaded '" + file.getOriginalFilename() + "'");
return("File Uploaded");
} catch (Exception e) {
res.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
logger.error("Failed to upload file '" + file.getOriginalFilename() + "'", e);
return("File Not Uploaded");
}
}
return "redirect:/fileUpload";
}
}
你必须使用..
@RequestMapping(method = RequestMethod.POST, headers = ("content-
type=multipart/*"), produces = "application/json", consumes = "file/*")
public String uploadFile(@RequestParam("number") String number, @RequestParam("files") MultipartFile files) {
并且还使用contentType:'multipart / form-data到javascript代码中
url : url,
data : formData,
processData : false,
contentType: 'multipart/form-data',
type : 'POST',
success : function(data) {
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