index.jsp page:
<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%>
<%
String path = Request.getcontextpath ();
String basepath = request.getscheme () + "://"
+ request.getservername () + ":" + request.getserverport ()
+ path + "/";
%>
<! DOCTYPE html>
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 ">
<meta name= "Viewport"
Content= "Width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no;" >
<meta name= "apple-mobile-web-app-capable" content= "yes" >
<meta name= "Apple-mobile-web-app-status-bar-style" content= "Black" >
<meta name= "format-detection" content= "Telephone=no" >
<title> Lucky Big Wheel Draw </title>
<link href= "Files/activity-style.css" rel= "stylesheet" type= "Text/css" >
<script type= "Text/javascript" src= "Files/jquery.min.js" ></script>
<script type= "Text/javascript" src= "Files/jqueryrotate.2.2.js" ></script>
<script type= "Text/javascript" src= "Files/jquery.easing.min.js" ></script>
<script type= "Text/javascript" >
$ (function () {
$ ("#inner"). Click (function () {
Lottery ();
});
});
function lottery () {
$.ajax ({
Type: ' POST ',
URL: ' Awardservlet ',
DataType: ' JSON ',
Cache:false,
Error:function () {
Alert (' Something went wrong! ‘);
return false;
},
Success:function (JSON) {
$ ("#inner"). Unbind (' click '). CSS ("cursor", "Default");
var angle = parseint (Json.angle); Angle
var msg = json.msg; Prompt information
$ ("#outer"). Rotate ({//inner internal pointer rotation, outer external turntable rotation
duration:5000,//rotation time
angle:0,//Start angle
animateto:3600 + angle,//rotation angle
Easing: $.easing.easeoutsine,//animation extension
Callback:function () {
var con = confirm (msg + ' \ n Do you want to do it again? ‘);
if (Con) {
Lottery ();
} else {
return false;
}
}
});
}
});
}
</script>
<body class= "Activity-lottery-winning" >
<div class= "Main" >
<script type= "Text/javascript" >
var loadingobj = new Loading (document.getElementById (' loading '), {
RADIUS:20,
Circlelinewidth:8
});
Loadingobj.show ();
</script>
<div id= "Outercont" >
<div id= "Outer-cont" style= "Overflow:hidden;" >
<div id= "outer" >
</div>
</div>
<div id= "Inner-cont" >
<div id= "inner" >
</div>
</div>
</div>
</div>
</body>
Awardservlet.java
Package com.ostarsier.servlet;
Import java.io.IOException;
Import Java.util.Random;
Import javax.servlet.ServletException;
Import Javax.servlet.http.HttpServlet;
Import Javax.servlet.http.HttpServletRequest;
Import Javax.servlet.http.HttpServletResponse;
/**
* Lottery probability algorithm from: http://www.helloweba.com/view-blog-216.html
*/
public class Awardservlet extends HttpServlet {
public void doget (HttpServletRequest request, httpservletresponse response)
Throws Servletexception, IOException {
object[][] Prizearr = new object[][]{
Id,min,max,prize "award", V "winning rate"
The turntable outside is turning
{1,1,14, "First Prize", 1},
{2,346,364, "First Prize", 1},
{3,16,44, "Don't Lose Heart", 10},
{4,46,74, "Neither God nor horse", 10},
{5, 76,104, "Good Luck", 10},
{6,106,134, "Second Prize", 2},
{7,136,164, "persistent", 10},
{8,166,194, "No Gods and Horses", 10},
{9,196,224, "Fortune First Saved", 10},
{10,226,254, "Third Prize", 5},
{11,256,284, "to refuel Oh", 10},
{12,286,314, "No Gods and Horses", 10},
{13,316,344, "Thank you for participating", 10}
The inside of the pointer rotates
{1,1,14, "First Prize", 1},
{2,346,364, "First Prize", 1},
{3,16,44, "Don't Lose Heart", 10},
{4,46,74, "Neither God nor horse", 10},
{5, 76,104, "Good Luck", 10},
{6,106,134, "Second Prize", 2},
{7,136,164, "persistent", 10},
{8,166,194, "No Gods and Horses", 10},
{9,196,224, "Fortune First Saved", 10},
{10,226,254, "Third Prize", 5},
{11,256,284, "to refuel Oh", 10},
{12,286,314, "No Gods and Horses", 10},
{13,316,344, "Thank you for participating", 10}
};
Object result[] = Award (Prizearr);//return angle and prize level after draw
Response.setcontenttype ("Text/html;charset=utf-8");
Response.getwriter (). Write ("{\" angle\ ": \" "+result[0]+" \ ", \" msg\ ": \" "+result[2]+" \ "}");
System.out.println ("Rotation angle:" +result[0]+ "\ T Prize ID:" +result[1]+ "\ t prompt message:" +result[2]);
}
Draw and return to angles and awards
Public object[] Award (object[][] Prizearr) {
Probability array
Integer obj[] = new Integer[prizearr.length];
for (int i=0;i<prizearr.length;i++) {
Obj[i] = (Integer) prizearr[i][4];
}
Integer Prizeid = Getrand (obj); Get the prize ID based on probability
Rotation angle
int angle = new Random (). Nextint ((integer) prizearr[prizeid][2]-(integer) prizearr[prizeid][1]) + (integer) prizearr[ PRIZEID][1];
String msg = (string) prizearr[prizeid][3];//hint information
return new object[]{angle,prizeid,msg};
}
Win prizes based on probabilities
Public integer Getrand (integer obj[]) {
Integer result = null;
try {
int sum = Total probability accuracy of 0;//probability array
for (int i=0;i<obj.length;i++) {
Sum+=obj[i];
}
for (int i=0;i<obj.length;i++) {//probability array loop
int randomnum = new Random (). Nextint (sum);//randomly generate an integer of 1 to sum
if (Randomnum<obj[i]) {//Winning
result = i;
Break
}else{
Sum-=obj[i];
}
}
} catch (Exception e) {
E.printstacktrace ();
}
return result;
}
public void DoPost (HttpServletRequest request, httpservletresponse response)
Throws Servletexception, IOException {
Doget (request, response);
}
}
Specific code: http://download.csdn.net/detail/mll999888/8578381
Java implementation Carousel Lottery;
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