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code, and the authentication of the user name password is given to the following usernamepasswordauthenticationfilter to handle. Insert a custom filter into the Httpsecurity filter chain and insert it into the usernamepasswordauthenticationfilter position. The insertion method has addfilterbefore,addfilterat,addfilterafter. This place needs to note that the use of Addfilterat is not to replace the original filter, in fact, the framework of the origi
The main content of this article is: using Java image to make verification code .Design ideas:
1. Copy Authimageservlet.class Image Verification code
2. Configure Web. xml
3, JSP, call the encapsulated Authimageservlet, realize the function of loading verification
When you create the Tp-link ID, you need to fill in the authentication code received by your phone (or mailbox), and the authentication code error results in the unsuccessful registration. The following figure:
If the above problems occur, follow the workaround:
The phone (or mailbox) received the authentication
A verification code implemented with Jsp+servlet+jquery+ajax, and verify that it is correct. For beginners to learn to communicate.:650) this.width=650; "title=" initial page. png "src=" http://s3.51cto.com/wyfs02/M01/49/1F/ Wkiom1qptgawrm2uaacibexalp4690.jpg "alt=" Wkiom1qptgawrm2uaacibexalp4690.jpg "/>650) this.width=650; "style=" Float:none; "title=" Enter the error
Python implements automatic login implementation code for websites with verification codes, and python verification Codes
I have heard that it is very convenient to use python for web crawlers. Just in the past few days, the organization has such a need to log on to the XX website to download some documents, so I tried it myself and the effect was good.
In this e
local(4) Verification Code identification Scheme on the Internet more, Python also has its own image processing library, this example calls the locomotive collector OCR recognition interface.(5) Form processing, can be used fiddler, such as grab tools to obtain the required parameters to submit(6) Generate the data that needs to be submitted, generate HTTP requests and send(7) According to the return of th
. method = 'post': if session. get ('img ') = = Request. form. get ('img '). upper (): return 'OK' return 'error' return "
Final effect:
Summary
The above is all about the implementation of verification code Image Code sharing in Python web. I hope it will be helpful to you. If you are interested, you can continue to
If you want to implement this process, you need a few steps.
The first step is the controller's operation.
Add the following code to the controller you want to manipulate:
Public function actions () {return array (//CAPTCHA action renders the CAPTCHA image displayed on the contact page ' Captcha ' =>array (' class ' = ' ccaptchaaction ', ' BackColor ' =>0xffffff, ' maxLength ' = ' 8 ',//generate up to a few characters ' minLength ' = > ' 7 ',//at le
The use and verification process of Yii Verification code
If you want to implement this process, you need a few steps.
The first step is the controller's operation.
Add the following code to the controller you want to manipulate:
Public function actions () {return array (//CAPTCHA action renders the CAPTCHA image disp
= "codevalidate. jsp? Authcode = "+ field. value + "× tamp =" + new Date (). getTime (); // Add a timestamp to prevent repeated xmlHttp cache. open ("GET", url, true); // method address, which is called automatically after processing and calls back xmlHttp. onreadystatechange = function () {// anonymous function if (xmlHttp. readyState = 4) {// Ajax engine initialization successful if (xmlHttp. status = 200) {// document. getElementById ("pbid "). innerHTML = xmlHttp. responseText;} else {alert
Business:Mobile phone-side Click Send Verification code, request sent to Python side, by Python call third party platform (we use the hazelnut cloud SMS http://smsow.zhenzikj.com) SMS interface, generate verification code and send.SDK Download: http://smsow.zhenzikj.com/doc/sdk.htmlAPI Document: Http://smsow.zhenzikj.c
men and women to fit a lot of it '; Str_split () cuts a string into an array, a Chinese character in Utf_8 is 3 characters $strdb = Str_split ($str, 3); >11 $captcha _code = "; 8> generates random man for ($i =0; $i
As follows
The above is the entire content of this article, to help you to implement PHP digital verification Code, PHP letter verification
The snow is the early years of the famous hacker artifact "knife light snow Shadow" one of its function is to break the form of violence, then very popular. But then there is the verification code this dongdong, almost to the back of the snow to a dead-end. But is it really a dead end? This article gives you the answer.
For the verification
Two Verification code verification implementation , a direct in the form form Submission button implementation verification, a use of Ajax pass parameters to achieve validation:
1, directly on the form form Submit button implementation verification, in the controller Verif
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]
The more straightforward test code is:
Alert (test ("ID number"));
After testing, the above JS verification is too strong, the input of the correct ID card, a random change is an error! Very practical, in the future everyone will be convenient to understand the user inpu
same color, possibly because the seed is too close, so it can only be generated directly
g.DrawString (rand,13*i+6,16);
}
Assignment Verification Code
This.str=srand;
Image entry into force
G.dispose ();
Bytearrayinputstream Input=null;
Bytearrayoutputstream output = new Bytearrayoutputstream ();
try{
Imageoutputstream imageout = imageio.createimageoutputstream (output);
Imageio.write (Image, "J
identified into 5 lines, 3 columns, 15 blocks, then each block is computed, and when the number of valid pixels in each block exceeds the percentage, it is marked as, if not more than, marked as 0, (here to show the convenience I use the,0, you can definitely mark it as 1, 0), Here to note that the percentages here according to the thickness of the font can be taken 67%,50%,33%,20%, why do you want to take these several numbers? Mainly related to the computer floating-point operation, select th
(IOException e) {Return "";}return strensure;}}In the Getcertpic () method, we first create an instance object of the memory image, then get the graphics context object of this memory image, then use this context object to draw the background and border. Next, randomly generated 4 in the maptable[] array of characters, composed of strings as a validation string, and output in memory, in order to cause some interference, randomly draw 10 interference points, if you want to increase the interfere
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