Bootstrap Fileinput 4.4.7文件上传实例详解

本实例所做功能为发送带附件邮件，可以上传多个附件，操作为选择一个附件以后自动上传，然后继续选择附件，填写完表单其他信息，点击保存发送带附件邮件。

HTML标签

<input id="fileUpload" type="file" name="file" data-show-preview="true" multiple/>

js初始化，设置全局文件名参数

var fileName = [];
function initFileInput(id, url) {
 $("#" + id).fileinput({
 language: 'zh', 
 uploadAsync:false,
 uploadUrl:url,
 browseClass: "btn btn-secondary",
 textEncoding:"UTF-8",
 showUpload: false,
 showPreview :true,
 dropZoneEnabled: false,
 maxFileCount:5,
 fileActionSettings:{
 showUpload: true
 },
 enctype:'multipart/form-data',
 msgFilesTooMany: "选择上传的文件数量({n}) 超过允许的最大数值{m}！",
 }).on("filebatchselected", function(event, files) {
 $("#fileUpload").fileinput("upload");
 }).on("filebatchuploadsuccess", function (event, data, previewId, index){
 if(data.response.success == true)
 {
 fileName.push(data.response.fileName);
 }else{
 alert("上传失败!");
 }
 $("#fileUpload").fileinput("clear");
 $("#fileUpload").fileinput("reset");
 }).on('fileerror', function(event, data, msg) {
 alert(msg);
 });
 }

java后台上传文件代码

@RequestMapping(value="/fileupload")
 @ResponseBody
 public Map<String, Object> fileUpload(HttpServletRequest request, HttpServletResponse response) {
 ResourceBundle bundle = PropertyResourceBundle.getBundle("application");
 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request;
 Map<String,MultipartFile> fileMap = multipartRequest.getFileMap();
 String rootPath = bundle.getString("upLoadUrl");
 String filePath = rootPath;
 Map<String, Object> map = new HashMap<>();
 map = uploadFiles(filePath,fileMap);
 return map;
 }

实际上传操作，返回上传操作经过处理的文件名，保证服务器端文件名唯一

public Map<String, Object> uploadFiles(String savePath,Map<String,MultipartFile> fiLeMap){
 Map<String, Object> map = new HashMap<>();
 try {
 String fileName = "";
 if(fiLeMap!=null){
 for(Map.Entry<String, MultipartFile> entity:fiLeMap.entrySet()){
 MultipartFile f = entity.getValue();
 if(f != null && !f.isEmpty()){
 String uuid = UUID.randomUUID().toString();
 fileName = uuid + "#" + f.getOriginalFilename();
 File newFile = new File(savePath + "/" + fileName); 
 f.transferTo(newFile);
 }
 }
 }
 map.put("success", true);
 map.put("fileName", fileName);
 return map;
 }catch (Exception e) {
 map.put("success", false);
 return map;
 }
}

ajax提交其他表单参数和所传附件文件名集合

$.ajax({
 type: "POST",
 url: 所需要请求地址,
 dataType: "json",
 traditional:true,
 data: {
 service:$("#service").select2('val').replace("All",""),
 startTime:$("#start").val(),
 endTime:$("#end").val(),
 reason:$("#reason").val(),
 fileName:JSON.stringify(fileName),
 outterEmail:isOutterEmail,
 innerEmail:isInnerEmail,
 isSendEmail:isSendEmail,
 subService:$("#subService").select2('val'),
 runningStatus:$("#runningStatus").select2('val')
 },
 success: function(data){
 $("#loadingModal").modal("hide");
 fileName.splice(0,fileName.length);
 alert(data.msg);
 if(data.success) {
 location.href = "revision";
 }
 },
 error:function(xhr) {
 $("#loadingModal").modal("hide");
 alert("保存失败");
 }
 });

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脚本之家。