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;
/**
?*?抽獎概率算法來自：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[][]{
				//idminmax，prize【獎項】v【中獎率】
				//外面的轉盤轉動
//				{1114“一等獎“1}
//				{2346364“一等獎“1}
//				{31644“不要灰心“10}
//				{44674“神馬也沒有“10}
//				{576104“祝您好運“10}
//				{6106134“二等獎“2}
//				{7136164“再接再厲“10}
//				{8166194“神馬也沒有“10}
//				{9196224“運氣先攢著“10}
//				{10226254“三等獎“5}
//				{11256284“要加油哦“10}
//				{12286314“神馬也沒有“10}
//				{13316344“謝謝參與“10}	
				
				//里面的指針轉動
				{1114“一等獎“1}
				{2346364“一等獎“1}
				{31644“不要灰心“10}
				{44674“神馬也沒有“10}
				{576104“祝您好運“10}
				{6106134“二等獎“2}
				{7136164“再接再厲“10}
				{8166194“神馬也沒有“10}
				{9196224“運氣先攢著“10}
				{10226254“三等獎“5}
				{11256284“要加油哦“10}
				{12286314“神馬也沒有“10}
				{13316344“謝謝參與“10}
		};
		object?result[]?=?award（prizeArr）;//抽獎后返回角度和獎品等級
		response.setContentType（“text/html;charset=UTF-8“）;
		response.getWriter（）.write（“{\“angle\“:\““+result[0]+“\“\“msg\“:\““+result[2]+“\“}“）;
		System.out.println（“轉動角度:“+result[0]+“\t獎項ID:“+result[1]+“\t提示信息:“+result[2]）;
	}
	
	//抽獎并返回角度和獎項
	public?object[]?award（object[][]?prizeArr）{
		//概率數組
		Integer?obj[]?=?new?Integer[prizeArr.length];
		for（int?i=0;i			obj[i]?=?（Integer）?prizeArr[i][4];
		}
		Integer?prizeId?=?getRand（obj）;?//根據概率獲取獎項id
		//旋轉角度
		int?angle?=?new?Random（）.nextInt（（Integer）prizeArr[prizeId][2]-（Integer）prizeArr[prizeId][1]）+（Integer）prizeArr[prizeId][1];
		String?msg?=?（String）?prizeArr[prizeId][3];//提示信息
		return?new?object[]{angleprizeIdmsg};
	}
	//根據概率獲取獎項
	public?Integer?getRand（Integer?obj[]）{
		Integer?result?=?null;
		try?{
			int??sum?=?0;//概率數組的總概率精度?
			for（int?i=0;i				sum+=obj[i];
			}
			for（int?i=0;i				int?randomNum?=?new?Random（）.nextInt（sum）;//隨機生成1到sum的整數
				if（randomNum					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）;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????500??2014-03-14?22:32??.settings\.jsdtscope

?????文件???????1040??2014-06-27?23:47??.settings\com.genuitec.eclipse.j2eedt.core.prefs

?????文件????????395??2014-03-14?22:32??.settings\org.eclipse.jdt.core.prefs

?????文件????????459??2014-06-27?23:47??.settings\org.eclipse.wst.common.component

?????文件????????252??2014-03-14?22:32??.settings\org.eclipse.wst.common.project.facet.core.xml

?????文件?????????49??2014-03-14?22:32??.settings\org.eclipse.wst.jsdt.ui.superType.container

?????文件??????????6??2014-03-14?22:32??.settings\org.eclipse.wst.jsdt.ui.superType.name

?????文件???????3216??2014-06-28?00:07??src\com\ostarsier\servlet\AwardServlet.java

?????文件?????154511??2014-03-14?22:36??WebRoot\files\activity-lottery-1.png

?????文件??????18045??2014-03-14?22:36??WebRoot\files\activity-lottery-2.png

?????文件???????7705??2014-03-14?22:36??WebRoot\files\activity-style.css

?????文件??????45587??2014-03-14?22:36??WebRoot\files\disk.jpg

?????文件???????5555??2014-03-14?22:36??WebRoot\files\jquery.easing.min.js

?????文件??????90518??2014-03-14?22:36??WebRoot\files\jquery.min.js

?????文件??????11500??2014-03-14?22:36??WebRoot\files\jQueryRotate.2.2.js

?????文件??????27297??2014-03-14?22:36??WebRoot\files\start.png

?????文件???????2563??2014-06-28?00:02??WebRoot\index.jsp

?????文件?????????36??2014-03-14?22:32??WebRoot\meta-INF\MANIFEST.MF

?????文件???????3549??2014-06-28?00:07??WebRoot\WEB-INF\classes\com\ostarsier\servlet\AwardServlet.class

?????文件????????710??2014-06-27?23:47??WebRoot\WEB-INF\web.xml

?????文件????????529??2014-03-14?22:32??.classpath

?????文件????????294??2014-06-27?23:47??.mymetadata

?????文件???????1750??2014-06-27?23:47??.project

?????目錄??????????0??2014-06-28?00:08??WebRoot\WEB-INF\classes\com\ostarsier\servlet

?????目錄??????????0??2014-06-28?00:08??WebRoot\WEB-INF\classes\com\ostarsier

?????目錄??????????0??2014-06-28?00:08??src\com\ostarsier\servlet

?????目錄??????????0??2014-06-28?00:08??WebRoot\WEB-INF\classes\com

?????目錄??????????0??2014-06-28?00:08??src\com\ostarsier

?????目錄??????????0??2014-06-28?00:08??WebRoot\WEB-INF\classes

?????目錄??????????0??2014-03-14?22:32??WebRoot\WEB-INF\lib

............此處省略11個文件信息