<%@page import="com.sun.xml.internal.ws.util.StringUtils"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String name = request.getParameter("address");
String pwd = request.getParameter("password");
if (null != name&&null!=pwd) {
/* out.println("请输入账号密码");
} else{
if(null!=incode&&null!=rightcode){
out.println("请输入验证码");
}else{
if(incode.equals(rightcode)) {
// out.println("验证码输入正确！"); */
if (name.equals("zs") && pwd.equals("123")) {
pageContext.forward("login.jsp");
}else {
out.println("您输入的账号或密码有误，请重新输入！");
}
/* }else{
out.println("验证码输入不正确，请重新输入！");
} */
// }
}
%>
<%
String incode = (String)request.getParameter("code");
String rightcode = (String)session.getAttribute("rCode");
if(incode != null && rightcode != null){
if(incode.equals(rightcode)){
out.println("验证码输入正确！");
}else{
out.println("验证码输入不正确，请重新输入！");
}
}
%>
<html>
<head>
</head>
<body style="background:url(image/why.png);">
<form action="index.jsp" method="post">
账号：
<input type="text" name="address" size="20"><br>
密码：
<input type="password" name="password" size="20"><br>
验证码：
<input type="text" name="code" size="10">
<img src="num.jsp" width="60px" height="40px" />换一张<br>
<input type="submit" value="登录" name="login" >
</form>
</body>
</html>
<%@ page contentType="image/jpeg" language="java" import="java.util.*,java.awt.*,java.awt.image.*,javax.imageio.*" pageEncoding="utf-8"%>
<%!
Color getRandColor(int fc,int bc){
Random random = new Random();
if(fc > 255){
fc = 255;
}
if(bc < 255){
bc = 255;
}
int r = fc +random.nextInt(bc-fc);
int g = fc +random.nextInt(bc-fc);
int b = fc +random.nextInt(bc-fc);
return new Color(r,g,b);
}
%>
<%
//设置页面不缓存
response.setHeader("Pragma","no-cache");
response.setHeader("Cache-Control","no-catch");
response.setDateHeader("Expires",0);
//在内存中创建图象
int width = 60;
int height = 20;
BufferedImage image = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
//创建图象
Graphics g = image.getGraphics();
//生成随机对象
Random random = new Random();
//设置背景色
g.setColor(getRandColor(200,250));
g.fillRect(0,0,width,height);
//设置字体
g.setFont(new Font("Tines Nev Roman",Font.PLAIN,18));
//随机产生干扰线
g.setColor(getRandColor(160,200));
for(int i = 0; i < 255; i++){
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
}
//随机产生认证码,4位数字
String sRand = "";
for(int i = 0; i < 4; i++){
String rand = String.valueOf(random.nextInt(10));
sRand += rand;
//将认证码显示到图象中
g.setColor(new Color(20 + random.nextInt(110),20 + random.nextInt(110),20 + random.nextInt(110)));
g.drawString(rand,13*i+6,16);
}
session.setAttribute("rCode",sRand);
//图像生效
g.dispose();
//输出图像到页面
ImageIO.write(image,"JPEG",response.getOutputStream());
out.clear();
out = pageContext.pushBody();
%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body style="background:url(image/why.png)">
<h1> 欢迎登录</h1>
</body>
</html>
