【图片上传时，出现400 和空指针错误】

图片上传时，出现400 和空指针错误

我也踩过这个坑( 1 )

已统计您的踩坑,无需重复点击

回答(1)

详细描述

错误截图

源码

    @RequestMapping(value="/uploadTop",method=RequestMethod.POST)
    public void uploadPage(MultipartHttpServletRequest multipartRequest,
                           HttpServletResponse response, HttpServletRequest request) throws Exception{
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");

        response.setContentType("text/html;charset=UTF-8");
        //System.out.println("ddddd");
        String realPath = multipartRequest.getSession()
                .getServletContext()
                .getRealPath("upload/top");
        System.out.println(realPath);
        log.info(realPath);
        String jpgName=UUID.randomUUID().toString()+sdf.format(new Date());
        MultipartFile file= multipartRequest.getFile("houseMaps");


        File file2 = new File(realPath+"/"+jpgName+".jpg");
        System.out.println(realPath+"/"+jpgName+".jpg");
        String result="{result:'"+jpgName+"'}";
        response.getWriter().print(result);
    }

编辑于2025-04-14

时间排序

热门排序

[武汉|结业弟子]JAVA-李伟明
0

form中一定要加入enctype="multipart/form-data"属性需要引入相关的jar包<dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.1</version><beanid="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMulti... 查看全部>

编辑于2018-07-28

去第页