Bootstrap FileInput实现图片上传功能

<div class="form-group">
 <label class="col-sm-2 control-label">图片</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="${record.picUrls}" type="hidden">//获取上传的图片路径，$("#filesInput").val()获取不到，用隐藏的input来获取
 </div>
</div>

<link href="/ajax/libs/bootstrap-fileinput/fileinput.css" rel="stylesheet" type="text/css"/>
<script th:src="/UploadFiles/2021-04-02/jquery.min.js}">

js代码：


var List = new Array();//定义一个全局变量去接受文件名和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, //默认异步上传
 showUpload: true, //是否显示上传按钮
 overwriteInitial: false,
 showRemove : false, //显示移除按钮
 // showPreview : true, //是否显示预览
 showCaption: false,//是否显示标题
 browseClass: "btn btn-primary", //按钮样式
 dropZoneEnabled: false,//是否显示拖拽区域
 maxFileCount: 5, //表示允许同时上传的最大文件个数
 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, //初始化回显图片路径
 initialPreviewConfig: picStrConfig //配置预览中的一些参数
 
}).on("fileuploaded", function (event, data, previewId, index) {
 var response = data.response;
 var filePath = data.response.filePath; //文件上传成功返回的文件名，可返回自定义文件名
 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) { //删除原图片之前的触发动作
 
 
}).on('filedeleted',function (event, data, previewId, index) {//删除原图片之后的动作
 var resources = $("#resources").val();
 var respone = previewId.responseJSON;
 if(respone.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"
  }
 }
})；
})


java代码：


/**
  * 上传文件
*/
 @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;
 
  /** 页面控件的文件流* */
  MultipartFile multipartFile = null;
  Map map =multipartRequest.getFileMap();
  for (Iterator i = map.keySet().iterator(); i.hasNext();) {
   Object obj = i.next();
   multipartFile=(MultipartFile) map.get(obj);
 
  }
  /** 获取文件的后缀* */
  String filename = multipartFile.getOriginalFilename();
 
  InputStream inputStream;
  String path = "";
  String fileMd5 = "";
  try {
   /** 文件上传到存储库中 **/
   inputStream = multipartFile.getInputStream();
   File tmpFile = File.createTempFile(filename,
   filename.substring(filename.lastIndexOf(".")));
   fileMd5 = Files.hash(tmpFile, Hashing.md5()).toString();
   FileUtils.copyInputStreamToFile(inputStream, tmpFile);
   /** 上传到 MinIO上 **/
   path = minioFileUtil.uploadCustomize(multipartFile.getInputStream(), filename.substring(filename.lastIndexOf(".")), "",multipartFile.getContentType());
   /** 上传 到 阿里云oss **/
//   path = AliOSSUtils.getInstance().multpartFileUpload(multipartFile,"bike");
   tmpFile.delete();
 
  } catch (Exception e) {
   e.printStackTrace();
   logger.error("上传失败",e);
   json.put("fileMd5", fileMd5);
   json.put("message", "上传失败");
   json.put("status", false);
   json.put("filePath", path);
   return json;
  }
  json.put("fileMd5", fileMd5);
  json.put("message", "上传成功");
  json.put("status", true);
  json.put("filePath", path);
  json.put("key", UUIDGenerator.getUUID());
  return json;
 }




/**
 * 删除文件文件
 */
@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) { /** 先删除数据库中的图片路径 再删除图片存储的源文件。**/
  minioUtil.removeObject(bucketName, key);
  return success(key);
 }
 return error();
}


修改 fileInput 源码：


self._handler($el, 'click', function () {
  if (!self._validateMinCount()) {
   return false;
  }
  self.ajaxAborted = false;
  self._raise('filebeforedelete', [vKey, extraData]);
  //noinspection JSUnresolvedVariable,JSHint
  $.modal.confirm("确定删除原文件？删除后不可恢复",function () { //初始化回显的图片在删除时弹出提示框确认。
  if (self.ajaxAborted instanceof Promise) {
   self.ajaxAborted.then(function (result) {
    if (!result) {
     $.ajax(settings);
    }
   });
  } else {
   if (!self.ajaxAborted) {
    $.ajax(settings);
   }
  }
  })
 });
});


以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。