File upload support about spark HOT 17 CLOSED

    post(new Route("/upload") {

        @Override
        public String h(Request request, Response response) throws Exception {
            final File upload = new File("upload");
            if (!upload.exists() && !upload.mkdirs()) {
                throw new RuntimeException("Failed to create directory " + upload.getAbsolutePath());
            }
            // this dumps all files contained in the multipart request to target directory.
            final MultipartRequest req = new MultipartRequest(request.raw(), upload.getAbsolutePath());
            halt(200);
            return null;
        }
    });

post("/upload", (req, res) -> {
    final File upload = new File("upload");
    if (!upload.exists() && !upload.mkdirs()) {
        throw new RuntimeException("Failed to create directory " + upload.getAbsolutePath());
    }

    // apache commons-fileupload to handle file upload
    DiskFileItemFactory factory = new DiskFileItemFactory();
    factory.setRepository(upload);
    ServletFileUpload fileUpload = new ServletFileUpload(factory);
    List<FileItem> items = fileUpload.parseRequest(req.raw());

    // image is the field name that we want to save
    FileItem item = items.stream()
                    .filter(e -> "image".equals(e.getFieldName()))
                    .findFirst().get();
    String fileName = item.getName();
    item.write(new File(dir, fileName));
    halt(200);
    return null;
});

if (req.raw().getAttribute("org.eclipse.multipartConfig") == null) {
 MultipartConfigElement multipartConfigElement = new MultipartConfigElement(System.getProperty("java.io.tmpdir"));
 req.raw().setAttribute("org.eclipse.multipartConfig", multipartConfigElement);
}

Part part = req.raw().getPart(name);

if (req.raw().getAttribute("org.eclipse.jetty.multipartConfig") == null) {
 MultipartConfigElement multipartConfigElement = new MultipartConfigElement(System.getProperty("java.io.tmpdir"));
 req.raw().setAttribute("org.eclipse.jetty.multipartConfig", multipartConfigElement);
}

Part part = req.raw().getPart(name);

 post("/api/:username/videos/new", (req, res) ->{
 if (req.raw().getAttribute("org.eclipse.jetty.multipartConfig") == null) {

                //MultipartConfigElement multipartConfigElement = new MultipartConfigElement("/tmp");
MultipartConfigElement multipartConfigElement = new MultipartConfigElement(System.getProperty("java.io.tmpdir"));
                req.raw().setAttribute("org.eclipse.jetty.multipartConfig", multipartConfigElement);
            }
            String username = req.params(":username");

            //InputStream inputStream = req.raw().getPart("file").getInputStream();
            Part uploadFile = req.raw().getPart("file");
  });

        protected FreemarkerBasedRoute(final String path, final String templateName) throws IOException {
            super(path);
            template = cfg.getTemplate(templateName);
        }
    .
    .
main(){

    get(new FreemarkerBasedRoute("/userHome/:name", "home.ftl") {
            @Override
            protected void doHandle(Request request, Response response, Writer writer) throws IOException, TemplateException {
                SimpleHash root = new SimpleHash();                
                String name = request.params(":name");  // problem is here**

                System.out.println("name:"+name);
                   root.put("name", name);
                                template.process(root, writer);
            }
        });
    }
       }

html
.
.
     < img  src="img.jpg"  height="400" width="400" />
/html

post("/upload", "multipart/form-data", (request, response) -> {
	//- Servlet 3.x config
	String location = "/aaa/bbb";  // the directory location where files will be stored
	long maxFileSize = 100000000;  // the maximum size allowed for uploaded files
	long maxRequestSize = 100000000;  // the maximum size allowed for multipart/form-data requests
	int fileSizeThreshold = 1024;  // the size threshold after which files will be written to disk
	MultipartConfigElement multipartConfigElement = new MultipartConfigElement(location, maxFileSize, maxRequestSize, fileSizeThreshold);
	request.raw().setAttribute("org.eclipse.jetty.multipartConfig", multipartConfigElement);
	//-/
	
	Collection<Part> parts = request.raw().getParts();
	for(Part part : parts) {
		System.out.println("Name:");
		System.out.println(part.getName());
		System.out.println("Size: ");
		System.out.println(part.getSize());
		System.out.println("Filename:");
		System.out.println(part.getSubmittedFileName());
	}
	
	String fName = request.raw().getPart("upfile").getSubmittedFileName();
	System.out.println("Title: "+request.raw().getParameter("title"));
	System.out.println("File: "+fName);
	
	Part uploadedFile = request.raw().getPart("upfile");
	Path out = Paths.get("/aaa/bbb/"+fName);
	try (final InputStream in = uploadedFile.getInputStream()) {
		Files.copy(in, out);
		uploadedFile.delete();
	}
	// cleanup
	multipartConfigElement = null;
	parts = null;
	uploadedFile = null;
	
	return "OK";
}); 

java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided
	at org.apache.catalina.connector.Request.parseParts(Request.java:2788)
	at org.apache.catalina.connector.Request.getParts(Request.java:2754)
	at org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1098)
	at javax.servlet.http.HttpServletRequestWrapper.getParts(HttpServletRequestWrapper.java:356)
	at com.ciarama.integrator.routes.ComentarioRoutes.lambda$0(ComentarioRoutes.java:22)
	at spark.RouteImpl$1.handle(RouteImpl.java:72)
	at spark.http.matching.Routes.execute(Routes.java:61)
	at spark.http.matching.MatcherFilter.doFilter(MatcherFilter.java:134)
	at spark.servlet.SparkFilter.doFilter(SparkFilter.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)