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Dashboard for downloading files using Spring?

I have the following RestController to upload files to the server.

@RequestMapping(value="/upload", method=RequestMethod.POST ) @CrossOrigin public SimpleHttpResponse uploadFile(@RequestParam("uploadItem") MultipartFile fileUpload ) { System.out.println(fileUpload.getOriginalFilename()); try { byte[] fileBytes = fileUpload.getBytes(); Files.write(Paths.get("C:\\Users\\" + fileUpload.getOriginalFilename()), fileBytes); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return new SimpleHttpResponse(true); }

Do I need to track bytes received at any time and set them in the user interface? Many of the examples I see on Google use servlets / JSPs with Apache Commons. Is there a Spring based solution to get progress or a way to integrate Apache Commons file uploads using Spring? Ideally, there would be a way to identify multiple file downloads from different users (or even from the same user). Thanks for any pointers.

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Complete spring solution using jquery form plugin

JSP PAGE

 <!DOCTYPE html> <html> <head> <title>File Upload</title> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script> <script src="http://malsup.github.com/jquery.form.js"></script> <script type="text/javascript"> $(function() { var bar = $('.bar'); var percent = $('.percent'); var status = $('#status'); $('form').ajaxForm({ beforeSend: function() { status.empty(); var percentVal = '0%'; bar.width(percentVal); percent.html(percentVal); }, uploadProgress: function(event, position, total, percentComplete) { var percentVal = percentComplete + '%'; bar.width(percentVal); percent.html(percentVal); }, complete: function(xhr) { status.html(xhr.responseText); } }); }); </script> </head> <body> <div class="progress"> <div class="bar"></div > <div class="percent">0%</div > </div> <div id="status"></div> <form action="/multipartfileupload/upload" method="post" enctype="multipart/form-data"> <input type="file" name="file"><br> <input type="submit" value="Upload File to Server"> </form> </body> </html>

Fileuploadcontroller

 /** * @author asif.hossain * @since 3/8/17. */ @Controller @RequestMapping("/upload") public class FileUploadController { @RequestMapping(method = RequestMethod.GET) String show() { return "upload"; } @RequestMapping(method = RequestMethod.POST) public String uploadFile(@RequestParam("file") MultipartFile file) { System.out.println(file.getName()); return "home"; } }

ServletConfig

MVC-servlet.xml

 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <context:component-scan base-package="net.asifhossain.multipartfileupload"/> <bean id="viewresolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <bean id="multipartResolver" class="org.springframework.web.multipart.support.StandardServletMultipartResolver"/> </beans>

web.xml

 <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml</param-value> </context-param> <servlet> <servlet-name>mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> <multipart-config> <max-file-size>20848820</max-file-size> <max-request-size>418018841</max-request-size> <file-size-threshold>1048576</file-size-threshold> </multipart-config> </servlet> <servlet-mapping> <servlet-name>mvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>

You can find the working code in my github repository. Ping me if you have a problem.

https://github.com/mirmdasif/springmvc/tree/master/multipartfileupload

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Source: https://habr.com/ru/post/1015574/

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