file-upload

HTML Input=”file” Accept Attribute File Type (CSV)

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Well this is embarrassing… I found the solution I was looking for and it couldn’t be simpler. I used the following code to get the desired result. <label for=”fileSelect”>Spreadsheet</label> <input id=”fileSelect” type=”file” accept=”.csv, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, application/vnd.ms-excel” /> Valid Accept Types: For CSV files (.csv), use: <input type=”file” accept=”.csv” /> For Excel Files 97-2003 (.xls), use: <input … Read more

How does HTTP file upload work?

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Let’s take a look at what happens when you select a file and submit your form (I’ve truncated the headers for brevity): POST /upload?upload_progress_id=12344 HTTP/1.1 Host: localhost:3000 Content-Length: 1325 Origin: http://localhost:3000 … other headers … Content-Type: multipart/form-data; boundary=—-WebKitFormBoundaryePkpFF7tjBAqx29L ——WebKitFormBoundaryePkpFF7tjBAqx29L Content-Disposition: form-data; name=”MAX_FILE_SIZE” 100000 ——WebKitFormBoundaryePkpFF7tjBAqx29L Content-Disposition: form-data; name=”uploadedfile”; filename=”hello.o” Content-Type: application/x-object … contents of file goes … Read more

How can I upload files to a server using JSP/Servlet?

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Introduction To browse and select a file for upload you need a HTML <input type=”file”> field in the form. As stated in the HTML specification you have to use the POST method and the enctype attribute of the form has to be set to “multipart/form-data”. <form action=”upload” method=”post” enctype=”multipart/form-data”> <input type=”text” name=”description” /> <input type=”file” … Read more

jQuery Ajax File Upload

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File upload is not possible through AJAX. You can upload file, without refreshing page by using IFrame. You can check further details here. UPDATE With XHR2, File upload through AJAX is supported. E.g. through FormData object, but unfortunately it is not supported by all/old browsers. FormData support starts from following desktop browsers versions. IE 10+ … Read more

Maximum request length exceeded.

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If you are using IIS for hosting your application, then the default upload file size is 4MB. To increase it, please use this below section in your web.config – <configuration> <system.web> <httpRuntime maxRequestLength=”1048576″ /> </system.web> </configuration> For IIS7 and above, you also need to add the lines below: <system.webServer> <security> <requestFiltering> <requestLimits maxAllowedContentLength=”1073741824″ /> </requestFiltering> … Read more

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