encoding

问题 I am trying to encrypt and decrypt a message as mentioned in the below code. Basically I want to encrypt a message with a public key and convert that encrypted message from byte array to String. And decrypt this string into original text. Here are the both methods. Here encryption works fine but decryption fails (error is "Data must start with zero"). I think this is causing because I convert encrypted byte array into String. How do I solve this? (I want to have encrypted byte array as string

问题 I am learning video encoding & decoding in FFmpeg. I tried the code sample on this page (only the video encoding & decoding part). Here the dummy image being created is in YCbCr format. How do I achieve similar encoding by creating RGB frames? I am stuck at: Firstly, how to create this RGB dummy frame? Secondly, how to encode it? Which codec to use? Most of them work with YUV420p only... EDIT: I have a YCbCr encoder and decoder as given on the this page. The thing is, I have RGB frame

问题 I have a file which is described under Unix as: $file xxx.csv xxx.csv: UTF-8 Unicode text, with very long lines Viewing it in less / vi will render some special chars (ßÄ°...) unreadable (├╝); Windows will also not display it; importing it directly into a db will just change the special characters to some other special characters (+ä, +ñ, ...). I wanted to convert it now to a "default readable" encoding with iconv. When I try to convert it with iconv $iconv -f UTF-8 -t ISO-8859-1 xxx.csv >

问题 Is there any effective difference between Content-Encoding: UTF-8 Content-Type: text/html; charset=utf-8 ? 回答1: Optional parameter charset makes sense only for text-based content ( Content-Types like text/plain , text/html , and such). Not all messages are text. Content-Encoding means that the whole body has been encoded in some way (usually compressed). Typical values for this header are gzip and deflate . The recipient of this message should decode (e.g. ungzip) the body to get the original

问题 I've been pulling my hear out over this problem for a few hours yesterday: I've a database on MySQL 4.1.22 server with encoding set to "UTF-8 Unicode (utf8)" (as reported by phpMyAdmin). Tables in this database have default charset set to latin2 . But, the web application (CMS Made Simple written in PHP) using it displays pages in utf8 ... However screwed up this may be, it actually works. The web app displays characters correctly (mostly Czech and Polish are used). I run: "mysqldump -u xxx

问题 After reading about how gzip compression works it got me thinking. If the Origin and Proxy server (CDN) both support gzip is adding a Vary: Accept-Encoding header necessary? 回答1: The Vary: Accept-Encoding header has more to do with caching than compression. When the Vary: Accept-Encoding header is present, it tells the client that the file can be cached/is the same whether or not the client requests compression. If for some reason the client has an uncompressed version of the file in its

问题 I read Joel's article about character sets and so I'm taking his advice to use UTF-8 on my web page and in my database. What I can't understand is what to do with user input. As Joel says, "It does not make sense to have a string without knowing what encoding it uses." But how do I know what encoding the user input string uses? If I have <input type="text" name="atextfield" > on my page, how do I know what encoding I'm getting from the user? What if the user puts in some special ASCII symbol,

问题 I am having trouble with IE 10 and jQuery .load(). I have a PHP page that I load once the website proper has loaded: $(document).ready( function() { $('#words').html('<div id="loading"><div id="loading-text">Analyzing frequency data...</div><div id="loading-image"><img src="loading.gif"></div></div>'); $('#words').load('translate.php?character=<?php echo $character1;?>'); }); It works fine in Chrome, but in IE the "loading" text appears for about 1 second and disappears, and the translate.php

问题 I've just installed CKeditor rich text WYSIWYG editor on a site I'm building and it seems to be working ok except for the fact that it inserts text into my mysql database as encoded html rather than regular html and then when the browser outputs this text it converts the encoded data into regular html that then displays in the browser showing the html tags and none of the styling!? eg I type: "This is text" into the editor and it then inserts <p>This is text</p> into the database. Then when

问题 I have a user table in MySQL 5.7.27 with utf8mb4_unicode_ci collation. Unfortunately, ı is not threaded as i for example, the below query won't find Yılmaz select id from users where name='Yilmaz'; I do not have the problem with other umlautes like ä and a . For example the two queries give the exact same result. select id from users where name='Märie'; select id from users where name='Marie'; I cannot simply replace ı by i and to the search, because then I would not find users with the name