Spring CommonsMultipartResolver 上传文件

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可以在controller(spring mvc) 或者 action (struts mvc)
中直接使用CommonsMultipartResolver

...Controller...{  //创建一个通用的多部分解析器.     CommonsMultipartResolver commonsMultipartResolver = new   CommonsMultipartResolver(request.getSession().getServletContext());  //设置编码     commonsMultipartResolver.setDefaultEncoding(”utf-8″);   //判断 request 是否有文件上传,即多部分请求...   if (commonsMultipartResolver.isMultipart(request))     {        //转换成多部分request        MultipartHttpServletRequest multipartRequest =             commonsMultipartResolver.resolveMultipart(request);     // file 是指 文件上传标签的 name=值      // 根据 name 获取上传的文件...      MultipartFile file = multipartRequest.getFile("file");      //上传后记录的文件...         File imageFile = new File("fileName");      //上传...      file.transferTo(imageFile);      }    }

...Controller...{  //创建一个通用的多部分解析器.     CommonsMultipartResolver commonsMultipartResolver = new   CommonsMultipartResolver(request.getSession().getServletContext());  //设置编码     commonsMultipartResolver.setDefaultEncoding(”utf-8″);   //判断 request 是否有文件上传,即多部分请求...   if (commonsMultipartResolver.isMultipart(request))     {        //转换成多部分request        MultipartHttpServletRequest multipartRequest =             commonsMultipartResolver.resolveMultipart(request);     // file 是指 文件上传标签的 name=值      // 根据 name 获取上传的文件...      MultipartFile file = multipartRequest.getFile("file");      //上传后记录的文件...         File imageFile = new File("fileName");      //上传...      file.transferTo(imageFile);      }    }

也可以在spring配置文件中配置

    <bean id=”multipartResolver” class=”org.springframework.web.multipart.commons.CommonsMultipartResolver”>      <property name=”defaultEncoding” value=”UTF-8″ />      </bean>       <bean id=”multipartResolver” class=”org.springframework.web.multipart.commons.CommonsMultipartResolver”>      <property name=”defaultEncoding” value=”UTF-8″ />      </bean>

jsp code

    <form id=”fileUploadForm” method=”post” action=”XXX.do?method=fileUpload” enctype=”multipart/form-data”>      <tr>      <td>File:</td>      <td><input type=”file” name=”file”></td>      </tr>      <tr>      <td><input type=”hidden” name=”fileOwner” value=”1002″/></td>      <td><input type=”submit” value=”submit”></td>      </tr>      </form>

这是通过md5加密方式进行文件上传处理的代码

@RequestMapping(path = { "/add" }, method = RequestMethod.POST)    public String addUser(MultipartFile image, String name, int age, HttpServletRequest request) {        UserDO user = new UserDO();        user.setName(name);        user.setAge(age);        if (!image.isEmpty()) {            String uploadPath = request.getServletContext().getRealPath("/upload");            try {                String imageName = DigestUtils.md5DigestAsHex(image.getBytes());                File file = new File(uploadPath + "/" + imageName + ".png");                image.transferTo(file);                user.setPhoto(imageName);            } catch (IOException e) {                e.printStackTrace();            }        } else {            user.setPhoto("default");        }        service.addUser(user);        return "redirect:/user/list";    }

jsp code

<input type="file" name="image">

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