SpringMVC MultipartFile文件上传

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关于springmvc的MultipartFile文件上传问题，我在这里贴上代码

jsp页面

 <input type="file" value="上传文件" name="file" />

控制层

@RequestMapping("/edit")@ResponseBody public Json edit(Tgoodcategory goodCategory,HttpServletRequest request,@RequestParam(value="file",required=false) MultipartFile file) {if(file!=null){String s=UploadFile.loadPicture(file,"cpsm",request);goodCategory.setInstruction("file/"+s);}Json j = new Json();try{j.setSuccess(true);j.setObj(goodCategoryService.edit(goodCategory));j.setMsg("编辑成功!");}catch(Exception ex){ex.printStackTrace();j.setMsg("编辑失败!");}return j;}

文件上传工具类

/** * 文件上传 * @param file 前台文件 * @param name 存储名前缀 * @param request HttpServletRequest * @return 数据库存储字段名：name+当前时间*/public static String loadPicture(MultipartFile file ,String name,HttpServletRequest request){String s="";SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");if (!file.isEmpty()) {byte[] bytes;try {bytes = file.getBytes();String rootPath = request.getSession().getServletContext().getRealPath("file");File dir = new File(rootPath + File.separator);if (!dir.exists()) {dir.mkdirs();}//String path=dir.getAbsolutePath() + File.separator + file.getOriginalFilename();String[] t=file.getOriginalFilename().split("\\.");String pictureType=t[t.length-1];String pictureName=name+sdf.format(new Date())+"."+pictureType;String path=dir.getAbsolutePath() + File.separator +pictureName;s=pictureName;File serverFile = new File(path);BufferedOutputStream stream;stream = new BufferedOutputStream(new FileOutputStream(serverFile));stream.write(bytes);stream.close();return pictureName;} catch (Exception e) {// TODO Auto-generated catch blockSystem.out.println("FileLoad Error...:"+e.getMessage());}}return s;}

springmvc的配置文件

<bean id="multipartResolver"          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">          <!-- 默认编码 -->        <property name="defaultEncoding" value="utf-8" />          <!-- 文件大小最大值 -->        <property name="maxUploadSize" value="10485760000" />          <!-- 内存中的最大值 -->        <property name="maxInMemorySize" value="40960" />  </bean>

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