博客
关于我
java文件上传带进度条_java文件上传带进度条的
阅读量:805 次
发布时间:2023-01-24

本文共 2056 字,大约阅读时间需要 6 分钟。

file upload controller class for handle multipart file upload requestcom.controller.FileUploadControllerclass FileUploadController implements file upload functionality with progress trackinglog = logger.getLogger(FileUploadController.class)upload method implementation@Controller@RequestMapping("/upload.html")public ModelAndView upload(HttpServletRequest request, HttpServletResponse response) throws Exception {create session instancesession = request.getSession()modelAndView = new ModelAndView()check if request is multipartisMultipart = ServletFileUpload.isMultipartContent(request)if (!isMultipart) {    return modelAndView;}create disk file item factoryFileItemFactory factory = new DiskFileItemFactory();initialize file upload serviceuploadService = new ServletFileUpload(factory);set progress listeneruploadService.setProgressListener(new ProgressListener() {    // progress updating logic    public void update(long bytesRead, long contentLength, int items) {        ProcessInfo info = new ProcessInfo();        info.itemNum = items;        info.readSize = bytesRead;        info.totalSize = contentLength;        info.show = String.format("%d/%d byte", bytesRead, contentLength);        info.rate = (int)(Math.round((float)bytesRead / contentLength * 100));        session.setAttribute("processInfo", info);    }});parse requestitems = uploadService.parseRequest(request)process uploaded itemsforeach (item in items) {    if (item is form field) {        // handle common form fields    } else {        // handle file upload fields        String fileName = item.getName();        String contentType = item.getContentType();        File uploadedFile = new File(("c://" + fileName));        item.write(uploadedFile);    }}return modelAndView}process method for getting progress info@RequestMapping("/process.json", method=RequestMethod.GET)@ResponseBodypublic Object process(HttpServletRequest request, HttpServletResponse response) throws Exception {    return session.getAttribute("processInfo");}class ProcessInfo {    // properties and fields}

转载地址:http://dmeyk.baihongyu.com/

你可能感兴趣的文章
MySQL数据库优化
查看>>
MySQL数据库优化总结
查看>>
MySQL数据库入门看这一篇文章就够了
查看>>
Mysql数据库函数contac_函数:函数删除操作语法&使用例——《mysql 从入门到内卷再到入土》...
查看>>
mysql数据库命令备份还原
查看>>
mysql数据库基础教程
查看>>
MySQL数据库备份
查看>>
mysql数据库备份与恢复
查看>>
MySQL数据库备份实战
查看>>
Mysql数据库备份的问题:mysqldump: Got error: 1049: Unknown_无需整理
查看>>
mysql数据库如何重置密码是多少钱_MySQL数据库忘记root密码如何重置修改
查看>>
MySQL数据库安装配置与常用命令
查看>>
MySQL数据库实现主从同步数据
查看>>
mysql数据库导入导出_windows系统以及linux系统下的操作---linux工作笔记042
查看>>
mysql数据库导出导入
查看>>
MySQL数据库工具类之——DataTable批量加入MySQL数据库(Net版)
查看>>
mysql数据库常用命令
查看>>
MySQL数据库必会的增删查改操作(CRUD)
查看>>
MySQL数据库性能分析与调优实践
查看>>
mysql数据库扫盲,你真的知道什么是数据库嘛
查看>>