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  • spring mvc上传图片

    1、需要commons-fileupload.jar

    commons-io.jar

    2、需要在springmvc.xml中 配置存放静态资源的路径,对图片等静态资源放行

         <mvc:resources location="/static/" mapping="/static/**"/>

    3、图片上传页面

     <form action="/springmvc1/upload" method="post" enctype="multipart/form-data">
            <input type="text" name="title"/><br>
            <input type="file" name="file"/><br>
            <input type="submit">
        </form>
        <img alt="图片" src=${imgpath }>

    4、后台页面

    @RequestMapping(method=RequestMethod.GET)
        public String upload(){
            return "fileupload";
        }
        
        @RequestMapping(method=RequestMethod.POST,produces="text/html;charset=UTF-8")
        public String uploadPost(String title, MultipartFile file, HttpServletRequest request, RedirectAttributes redirectAttributes){
            
            String realPath=null;
            
            String filename = UUID.randomUUID().toString()+"."+file.getOriginalFilename().split("\.")[1];
            try {
                
                realPath = request.getSession().getServletContext().getRealPath("/static/upload/");
                file.transferTo(new File( realPath + File.separatorChar + filename));
            } catch (IllegalStateException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            redirectAttributes.addFlashAttribute("imgpath", "/springmvc1/static/upload/" + filename);
            return "redirect:/upload";
        }

    通过url请求时:

    上传成功后

    可以再xml配置上传文件大小的限制:

         <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
             <property name="maxUploadSize" value="100000"></property>
         </bean>

    上传过大的就会报出异常。

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  • 原文地址:https://www.cnblogs.com/hpustudent/p/4319431.html
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