文件上传不显示上传选择文本域

在使用SwaggerBootstrapUi的朋友经常询问的一个问题,为什么上传参数file对象不显示file文本域,而是普通文本,如下图：

文件上传不显示上传选择文本域 - 图1

因为Springfox-Swagger针对不同的版本,某些版本也会出现此问题,为一劳永逸,SwaggerBootstrapUi特别指定需要强指定dataType类型为MultipartFile

代码示例(UploadController.java)：

  1. @ApiOperation(value = "文件素材上传接口")
  2. @ApiImplicitParams({@ApiImplicitParam(name = "file[]", value = "文件流对象,接收数组格式", required = true,dataType = "MultipartFile",allowMultiple = true),
  3.                     @ApiImplicitParam(name = "title", value = "title", required = true)}
  4.                   )
  5. @RequestMapping(value="/uploadMaterial",method = RequestMethod.POST)
  6. @ResponseBody
  7. public RestMessage uploadMaterial(@RequestParam(value="file[]",required = true) MultipartFile[] files,@RequestParam(value = "title") String title, HttpServletRequest request) throws IOException {
  8.     //int mul=1*1024*1024;
  9.     String realPath=request.getSession().getServletContext().getRealPath("/upload");
  10.     File realFile=new File(realPath);
  11.     if (!realFile.exists()){
  12.         realFile.mkdirs();
  13.     }
  14.     List<Map> uploadFiles= Lists.newArrayList();
  15.     System.out.println("进入图片上传接口:"+files.length +"张");
  16.     for (MultipartFile file : files) {
  17.         File targetFile=new File(realFile,file.getOriginalFilename());
  18.         FileOutputStream fileOutputStream=null;
  19.         InputStream ins=null;
  20.         try{
  21.             fileOutputStream=new FileOutputStream(targetFile);
  22.             int i=-1;
  23.             byte[] bytes=new byte[1024*1024];
  24.             ins=file.getInputStream();
  25.             while ((i=ins.read(bytes))!=-1){
  26.                 fileOutputStream.write(bytes,0,i);
  27.             }
  28.         }catch (IOException e){
  29.         }finally {
  30.             closeQuilty(ins);
  31.             closeQuilty(fileOutputStream);
  32.         }
  33.         Map fileInfo= Maps.newHashMap();
  34.         fileInfo.put("id", UUID.randomUUID().toString());
  35.         fileInfo.put("url",targetFile.getPath());
  36.         fileInfo.put("original_name",targetFile.getName());
  37.         uploadFiles.add(fileInfo);
  38.     }
  39.     RestMessage rm=new RestMessage();
  40.     rm.setData(uploadFiles);
  41.     return rm;
  42. }

关于多文件上传，设置allowMultiple=true即可,在UI界面端,按住Ctrl键即可多选文件.