Sender:
Hax (Prince Frog), News District: WebDevelop
Title: About FORM-based multi-file upload
Sending station: Drinking water, December 30, 2002 13:40:54 Monday), station letter
A typical Form-based file upload page is as follows:
file upload </ title></p>
<p><form action = "/ upload" Method = "post" enctype = "multipart / form-data"></p>
<p><Input name = "file0" type = "file" /></p>
<p><Input Type = "Submit" /></p>
<p></ form></p>
<p></ body></p>
<p></ html></p>
<p>The resulting page includes an input box and a browsing button, and then pop up one after the browsing button.</p>
<p>The system dialog allows you to choose a local file.</p>
<p>However, in the IE browser, there is a big limit that only one file can be selected at a time.</p>
<p>This is also true of Mozilla.</p>
<p>In fact, according to the W3C's HTML specification, it is to allow a form that contains multiple submission files, however</p>
<p>Due to the restriction of the browser, most webapp can only rely on the script to generate multiple file field.</p>
<p>To achieve multi-file upload.</p>
<p>E.g:</p>
<p><form ...></p>
<p><Input name = "file1" type = "file" /></p>
<p><Input name = "file2" type = "file" /></p>
<p>...</p>
<p></ form></p>
<p>According to I have seen, only Opera can submit multiple files in a file field, but do not support</p>
<p>Submit a whole directory.</p>
<p>No, we must use some alternatives:</p>
<p>FTP</p>
<p>The FTP problem is that we must let users use a different environment that is different from the browser webpage. Of course now</p>
<p>There are many FTP Client to have very similar to the resource manager. Another big problem is to pass on the website</p>
<p>Some means verify that the user's identity is not passed to FTP. FTP's user verification is independent.</p>
<p>And the security of FTP is similar to the general Form or HTTP-based Basic authentication.</p>
<p>But unable to reach the level of HTTP's Digest verification and even SSL.</p>
<p>2. WebDAV</p>
<p>WebDAV is an extended HTTP protocol, so there is a lot of advantages over FTP. But there is also a problem is WebDAV.</p>
<p>The combination of clients and browsers is not very ideal, although IE can be "open web folder"</p>
<p>Way open the WebDAV directory.</p>
<p>3. Upload components of ActiveX or Applets.</p>
<p>There is only this solution to this solution, but it is necessary to purchase or develop.</p>
<p>I hope that experienced comrades will discuss this issue.</p>
<p>For example, there is no ripe web-based webDAV upload solution, or open source or free support multi-file</p>
<p>Upload components of the directory.</p>
<p>-</p>
<p>Water intangible winds have no cases of reasoning depends on the heart ...</p>
<p>※ Modification: · HAX on December 30th 13:43:29 revised this article · [From: 202.120.15.34]</p></div><div class="text-center mt-3 text-grey">
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