index.jsp page
<%@ page contenttype= "text/html; Charset=utf-8 "%>
<%@ taglib uri= "/web-inf/struts-bean.tld" prefix= "Bean"%>
<%@ taglib uri= "/web-inf/struts-html.tld" prefix= "html"%>
<%@ taglib uri= "/web-inf/struts-logic.tld" prefix= "logic"%>
<title><bean:message key= "Application.title"/></title>
<link rel= "icon" href= "./images/favicon.ico" type= "Image/x-icon"/>
<link rel= "stylesheet" href= "/styles/login.css" type= "Text/css"
Media= "All"/>
<meta http-equiv= "Content-type" content= "Text/html;charset=utf-8"/>
<meta name= "Author" content= "Neusoft"/>
<meta name= "description" content= "MCIS System"/>
<meta name= "Copyright" content= "Copyright (c) Neusoft"/>
<style type= "Text/css" >
<!--
. style1 {border-color: #009900}
-
</style>
<body onload= "load ();" >
<div id= "Layout-left" ></div>
<div id= "Layout-middle" >
<div id= "Body" >
<div id= "Body_left" >
<p></p>
</div>
<div id= "Body_right" >
Onsubmit= "return Clicksubmit ();" >
<ul>
<li></li>
<li>
User name:
<br>
Onkeyup= "Checkadmin ();" Onblur= "checkadmin ();"
Style= "width:160;height:20" maxlength= "/>"
</li>
<li>
Secret &NBSP&NBSP Code:
<br>
<!--<input class= "fixed" type= "password" size= "+" id= "password"/>-->
Style= "width:160;height:20" maxlength= "ten"/>
</li>
<li>
Verification Code:
<br>
Maxlength= "4" style= "width:100;height:20" value= ""
Onfocus= "if (this.value== ') this.value=";
Onblur= "if (this.value== ') {this.value=";} "/>
<a href= "Javascript:show (document.getElementById (' Hcode '))" >Id= "Hcode" title= "click to refresh"
Src= "./random.jsp" hspace= "class=" Style1 "
Style= "Text-decoration:none"/></a>
</li>
<li>
Login method:
Property= "User.value (TYPE)" value= "0"/>
Exclusive mode
</li>
<li>
<input class= "BT" type= "Submit" value= "Login"/>
<!--<a href= "#" > Forgot password?</a>-->
<input class= "BT" type= "button" value= "Reset"
Onclick= "Clickreset ();" >
</li>
</ul>
<div id= "Message" >
<%@ include file= ". /common/messagehandle.jsp "%>
</div>
<span id= "logo" ></span>
</div>
</div>
</div>
<div id= "Layout-right" ></div>
<script type= "Text/javascript" >
<!--
var windowname = "Processwindow";
function init () {
Settitle2top ();
Window.name = Windowname;
}
function OnEnter () {
if (Window.event.keyCode = =)//if press the Enter key
Window.event.keyCode = 9; Replace it with the Tab key
Userbean.submit ();
}
function Checkadmin () {
if (' admin ' = = userbean.elements["User.value (ID)"].value) {
document.getElementById ("Admintype"). Disabled=false;
}else{
document.getElementById ("Admintype"). Disabled= "true";
}
}
function Clicksubmit () {
var main = document.getElementById ("main");
var errmsg = document.getElementById ("message");
var id=userbean.elements["User.value (Id)"].value;
var orignpass=userbean.elements["User.value (PASSWORD)"].value;
var rs=userbean.elements["User.value (RS)"].value;
var orignrs=userbean.elements["User.value (RS)"].value;
if (Id = = NULL | | id== "") {
Errmsg.style.color= "#CC0000";
Errmsg.innertext = "Please enter user name";
userbean.elements["User.value (ID)"].focus ();
return false;
}
if (Orignpass = = NULL | | orignpass== "") {
Errmsg.style.color= "#CC0000";
Errmsg.innertext = "Please enter password";
userbean.elements["User.value (PASSWORD)"].focus ();
return false;
}
if (Orignrs = = NULL | | orignrs== "") {
Errmsg.style.color= "#CC0000";
Errmsg.innertext = "Please enter the verification code";
Userbean.elements["User.value (RS)"].focus ();
return false;
}
else {
return true;
Userbean.submit ();
}
}
function Clickreset () {
Userbean.reset ();
Load ();
var errmsg = document.getElementById ("message");
Errmsg.innertext= "";
}
function Load () {
document.getElementById ("Type1"). Checked= "true";
Alert (document.getElementById ("type2"). Disabled);
document.getElementById ("Admintype"). Disabled=true;
}
function Show (o) {//Reload Verification code
var timenow = new Date (). GetTime ();
O.src= "./random.jsp?d=" +timenow;
Timeout execution;
SetTimeout (function () {
O.src= "./random.jsp?d=" +timenow;
}
);
}
-
</script>
</body>
random.jsp
<%@ page contenttype= "IMAGE/JPEG; CHARSET=GBK "%>
<%@ page import= "java.awt.*,java.awt.image.*"%>
<%@ page import= "java.util.*"%>
<%@ page import= "com.sun.image.codec.jpeg.*"%>
<%!//generates a random color function getrandcolor
Color getrandcolor (int fc, int BC) {
Random r = new Random ();
if (FC > 255) FC = 255;
if (BC > 255) BC = 255;
int red = FC + R.nextint (BC-FC); Red
int green = FC + R.nextint (BC-FC); Green
int blue = FC + R.nextint (BC-FC); Blue
return new Color (red, green, blue);
}%>
<%
Settings page does not cache
Response.setheader ("Pragma", "No-cache");
Response.setheader ("Cache-control", "No-cache");
Response.setdateheader ("Expires", 0);
Create a random class
Random r = new Random ();
Create an image in memory with width widths and height
int width =, height = 20;
BufferedImage pic = new BufferedImage (width, height, bufferedimage.type_int_rgb);
Get the graphical context environment
Graphics GC = Pic.getgraphics ();
Set Background shape context fill
Gc.setcolor (Getrandcolor (200, 250));
Gc.fillrect (0, 0, width, height);
Setting the graphics context font
Gc.setfont (New Font ("Times New Roman", Font.plain, 18));
Randomly generates 50 lines of interference so that the authentication code in the image is not easily detected by other analysis programs
Gc.setcolor (Getrandcolor (160, 200));
for (int i = 0; i < i++) {
int x1 = r.nextint (width);
int y1 = r.nextint (height);
int x2 = r.nextint (15);
int y2 = r.nextint (15);
Gc.drawline (x1, y1, x1 + x2, y1 + y2);
}
Randomly generate 50 interference points, so that the verification code in the image is not easily detected by other analysis programs
Gc.setcolor (Getrandcolor (120, 240));
for (int i = 0; i < i++) {
int x = r.nextint (width);
int y = r.nextint (height);
Gc.drawoval (x, y, 0, 0);
}
Randomly generate 4-digit verification codes
String RS = "";
String rn = "";
for (int i = 0; i < 4; i++) {
Generates a random digital RN within 10
RN = string.valueof (R.nextint (10));
RS + = RN;
Display the authentication code in the image using the DrawString function
Gc.setcolor (New Color (+ r.nextint), + r.nextint (+), + R
. Nextint (110)));
Gc.drawstring (RN, * i + 6, 16);
}
Releasing the graphical context environment
Gc.dispose ();
Share the authentication code RS into session
Session.setattribute ("random", RS);
Output the generated CAPTCHA image to the page
JPEGImageEncoder encoder = Jpegcodec.createjpegencoder (Response.getoutputstream ());
Encoder.encode (pic);
Out.clear ();
out = Pagecontext.pushbody ();
%>
CAPTCHA Code Writing
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
