Bootstrap FileInput implements image upload function

<div class="form-group">
 <label class="col-sm-2 control-label">Picture</label>
 <div class="col-sm-8">
  <input id="filesInput" type="file" multiple data-browse-on-zone-click="true" class="file-loading" accept="image/*" />
  <input id="resources" name="resources" th:value="${record.picUrls}" type="hidden">//Get the uploaded image path, $("#filesInput").val() cannot get it, use hidden input to get it</div>
</div>

<link href="/ajax/libs/bootstrap-fileinput/fileinput.css" rel="stylesheet" type="text/css"/>
<script th:src="@{/js/jquery.min.js}"></script>
<script th:src="@{/js/bootstrap.min.js}"></script>
<script th:src="@{/ajax/libs/bootstrap-fileinput/fileinput.js}"></script>

var List = new Array(); //Define a global variable to accept the file name and id
$(function () {
 var picStr = [
http:...,
http:....
];
var picStrConfig = [
{caption: "11111", width: "120px", fileid: "123456", url: "deleteData", type: "image", key: "1"},
........
];
$('#filesInput').fileinput({
 theme: 'fas',
 language: 'zh',
 uploadUrl: ctx + 'bike/record/uploadData',
 uploadAsync: true, //Default asynchronous upload showUpload: true, //Whether to display the upload button overwriteInitial: false,
 showRemove : false, //Show the remove button// showPreview : true, //Show preview or not showCaption: false, //Show title or not browseClass: "btn btn-primary", //Button style dropZoneEnabled: false, //Show the drag zone or not maxFileCount: 5, //Indicates the maximum number of files that can be uploaded at the same time enctype: 'multipart/form-data',
 validateInitialCount:true,
 layoutTemplates: {actionUpload: ''},
 maxFilesNum: 5,
 fileType: "any",
 allowedPreviewTypes: ['image'],
 previewFileIcon: "<i class='glyphicon glyphicon-king'></i>",
 initialPreviewAsData: true,
 initialPreview: picStr, //Initialize the echo image path initialPreviewConfig: picStrConfig //Configure some parameters in the preview}).on("fileuploaded", function (event, data, previewId, index) {
 var response = data.response;
 var filePath = data.response.filePath; //The file name returned after the file is successfully uploaded. You can return a custom file name List.push({ FileName: filePath, KeyID: previewId })
 // alert(response.filePath);
 // $("#fileMd5").val(response.fileMd5);
 // $("#version").val(response.newVersionName);
 var resources = $('#resources').val();
 if (!resources){
  $("#resources").val(response.filePath);
 }else{
  $("#resources").val(resources+"^_^"+response.filePath);
 }
 
 
}).on('filepredelete', function(event, data, previewId, index) { //Trigger action before deleting the original image}).on('filedeleted',function (event, data, previewId, index) {//Action after deleting the original imagevar resources = $("#resources").val();
 var response = previewId.responseJSON;
 if(response.code == 0){
  var deleteName = "/"+data;
  if(resources.indexOf("^_^"+deleteName)>-1){
   $("#resources").val("^_^"+resources.replace(deleteName,""));
   resources = $("#resources").val();
  }
  if(resources.indexOf(deleteName+"^_^")>-1){
   $("#resources").val(resources.replace(deleteName+"^_^",""));
   resources = $("#resources").val();
  }
  if (resources.indexOf(deleteName)>-1){
   $("#resources").val(resources.replace(deleteName,""));
   resources = $("#resources").val();
  }
 }
}).on('filepreupload', function(event, data, previewId, index) {
 var form = data.form, files = data.files, extra = data.extra,
  response = data.response, reader = data.reader;
}).on("filesuccessremove", function (event, data, previewId, index) {
 var resources = $("#resources").val();
 for (var i = 0; i < List.length; i++) {
  if (List[i].KeyID == data) {
   if(resources.indexOf("^_^"+List[i].FileName)>-1){
    $("#resources").val("^_^"+resources.replace(List[i].FileName,""));
    resources = $("#resources").val();
   }
   if(resources.indexOf(List[i].FileName+"^_^")>-1){
    $("#resources").val(resources.replace(List[i].FileName+"^_^",""));
    resources = $("#resources").val();
   }
   if(resources.indexOf(List[i].FileName)>-1){
    $("#resources").val(resources.replace(List[i].FileName,""));
    resources = $("#resources").val();
   }
   List[i].KeyID = "1"
  }
 }
});
})

/**
  * Upload file */
 @RequestMapping("/uploadData")
 @ResponseBody
 public Map<String, Object> uploadData(HttpServletRequest request, HttpServletResponse response) throws Exception{
  request.setCharacterEncoding("UTF-8");
  Map<String, Object> json = new HashMap<String, Object>();
  MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
 
  /** File stream of page control* */
  MultipartFile multipartFile = null;
  Map map =multipartRequest.getFileMap();
  for (Iterator i = map.keySet().iterator(); i.hasNext();) {
   Object obj = i.next();
   multipartFile=(MultipartFile) map.get(obj);
 
  }
  /** Get the file suffix * */
  String filename = multipartFile.getOriginalFilename();
 
  InputStream inputStream;
  String path = "";
  String fileMd5 = "";
  try {
   /** Upload the file to the repository **/
   inputStream = multipartFile.getInputStream();
   File tmpFile = File.createTempFile(filename,
   filename.substring(filename.lastIndexOf(".")));
   fileMd5 = Files.hash(tmpFile, Hashing.md5()).toString();
   FileUtils.copyInputStreamToFile(inputStream, tmpFile);
   /** Upload to MinIO**/
   path = minioFileUtil.uploadCustomize(multipartFile.getInputStream(), filename.substring(filename.lastIndexOf(".")), "",multipartFile.getContentType());
   /** Upload to Alibaba Cloud OSS **/
// path = AliOSSUtils.getInstance().multpartFileUpload(multipartFile,"bike");
   tmpFile.delete();
 
  } catch (Exception e) {
   e.printStackTrace();
   logger.error("Upload failed",e);
   json.put("fileMd5", fileMd5);
   json.put("message", "Upload failed");
   json.put("status", false);
   json.put("filePath", path);
   return json;
  }
  json.put("fileMd5", fileMd5);
  json.put("message", "Upload successful");
  json.put("status", true);
  json.put("filePath", path);
  json.put("key", UUIDGenerator.getUUID());
  return json;
 }

/**
 * Delete file file */
@RequestMapping("/edit/deleteData/{id}")
@ResponseBody
@Transactional(rollbackFor = Exception.class)
public AjaxResult deleteData(@PathVariable("id")String id, HttpServletRequest request) throws Exception{
 String key = request.getParameter("key");
 Record record = recordService.getById(id);
 String picUrls = record.getPicUrls();
 String deleteName = "/" + key;
 if (picUrls.indexOf("^_^" + deleteName) > -1) {
  picUrls = "^_^" + picUrls.replace(deleteName, "");
 }
 if (picUrls.indexOf(deleteName + "^_^") > -1) {
  picUrls = picUrls.replace(deleteName + "^_^", "");
 }
 if (picUrls.indexOf(deleteName) > -1) {
  picUrls = picUrls.replace(deleteName, "");
 }
 record.setPicUrls(picUrls);
 if (recordMapper.updatePicsById(record) == 1) { /** Delete the image path in the database first and then delete the source file where the image is stored. **/
  minioUtil.removeObject(bucketName, key);
  return success(key);
 }
 return error();
}

self._handler($el, 'click', function () {
  if (!self._validateMinCount()) {
   return false;
  }
  self.ajaxAborted = false;
  self._raise('filebeforedelete', [vKey, extraData]);
  //noinspection JSUnresolvedVariable,JSHint
  $.modal.confirm("Are you sure you want to delete the original file? It cannot be restored after deletion",function () { // Initialize the echoed image and pop up a prompt box to confirm when deleting it.
  if (self.ajaxAborted instanceof Promise) {
   self.ajaxAborted.then(function (result) {
    if (!result) {
     $.ajax(settings);
    }
   });
  } else {
   if (!self.ajaxAborted) {
    $.ajax(settings);
   }
  }
  })
 });
});