经典登录界面制作

经典登录界面制作

声明本登录使用jsp编写，可在MyEclipse8.5等软件中执行

1.登录界面图：

2.登录代码

Login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>

<%@ taglib prefix="fmt" uri="https://www.360docs.net/doc/0618547549.html,/jsp/jstl/fmt" %>

<%@ taglib prefix="c" uri="https://www.360docs.net/doc/0618547549.html,/jsp/jstl/core" %>

<%

String path = request.getContextPath();

String basePath =

request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>

用户名:

密 码：

角 色： 系统管理员 教务管理员 教师用户 学生用户

验证码：

看不清点我

style="background-color:#212312;background:background-image; background-image:url(/Drade/image/button.png)"> style="background-color:#212312;background:background-image; background-image:url(/Drade/image/button.png)"> 注册

现在时间是:

欢迎访问学生成绩管理系统!

3.验证码

Makecertpic.java

package Temp.Util;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.io.OutputStream;

import java.util.Random;

import javax.imageio.ImageIO;

public class makeCertpic {

private char map[]={'1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','g','h','i','j'

,'k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};

public String getCertpic(int width,int height,OutputStream os){

if(width<=0) width=60;

if(height<=0) height=20;

BufferedImage image=new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB);

Graphics g=image.getGraphics();

g.setColor(new Color(0xDCDCDC));

g.fillRect(0, 0, width, height);

g.setColor(Color.black);

g.drawRect(0, 0, width-1, height-1);

String str="";

for(int i=0;i<4;i++){

str+=map[(int)(map.length*Math.random())];

}

g.setColor(Color.black);

g.setFont(new Font("Times New Roman",Font.PLAIN,18));

String temp=str.substring(0, 1);

g.drawString(temp,8, 17);

temp=str.substring(1, 2);

g.drawString(temp,20, 15);

temp=str.substring(2,3);

g.drawString(temp,35, 18);

temp=str.substring(3,4);

g.drawString(temp,45, 15);

Random r=new Random();

for(int i=0;i<10;i++){

int x=r.nextInt(width);

int y=r.nextInt(height);

g.drawOval(x, y,1, 1);

}

g.dispose();

try {

ImageIO.write(image, "JPEG", os);

} catch (IOException e) {

e.printStackTrace();

}

return str;

}

}

4.使用javaBean(生成验证码java代码)

Getcertpic.jsp

<%@ page contentType="image/jpeg" import="java.awt.*,

java.awt.image.*,java.util.*,javax.imageio.*" pageEncoding="Gb2312" %>

<%

String path = request.getContextPath();

String basePath =

request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>

<%

String s=image.getCertpic(0,0,response.getOutputStream());

session.setAttribute("code",s);

%>