验证码相关

最新推荐文章于 2024-07-16 09:00:00 发布

原创最新推荐文章于 2024-07-16 09:00:00 发布 · 664 阅读

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SERVLET

package com.neowave.health.web;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.*;

import java.io.*;
import java.awt.*;
import java.awt.image.*;
import java.util.*;
import javax.imageio.*; 

public class AuthImg
	extends HttpServlet
{
	//定义图形验证码中绘制字符的字体
	private final Font mFont =
		new Font("Arial Black", Font.PLAIN, 16);
	//定义图形验证码的大小
	private final int IMG_WIDTH = 100;
	private final int IMG_HEIGTH = 18;
	//定义一个获取随机颜色的方法
	private 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);
		//得到随机颜色
		return new Color(r , g , b);
	}
	//重写service方法，生成对客户端的响应
	public void service(HttpServletRequest request,
		HttpServletResponse response) 
		throws ServletException, IOException
	{
		//设置禁止缓存
		response.setHeader("Pragma","No-cache");
		response.setHeader("Cache-Control","no-cache");
		response.setDateHeader("Expires", 0);
		response.setContentType("image/jpeg");
		BufferedImage image = new BufferedImage
			(IMG_WIDTH , IMG_HEIGTH , BufferedImage.TYPE_INT_RGB);
		Graphics g = image.getGraphics();
		Random random = new Random();
		g.setColor(getRandColor(200 , 250));
		//填充背景色
		g.fillRect(1, 1, IMG_WIDTH - 1, IMG_HEIGTH - 1);
		//为图形验证码绘制边框
		g.setColor(new Color(102 , 102 , 102));
		g.drawRect(0, 0, IMG_WIDTH - 1, IMG_HEIGTH - 1);
		g.setColor(getRandColor(160,200));
		//生成随机干扰线
		for (int i = 0 ; i < 80 ; i++)
		{
			int x = random.nextInt(IMG_WIDTH - 1);
			int y = random.nextInt(IMG_HEIGTH - 1);
			int xl = random.nextInt(6) + 1;
			int yl = random.nextInt(12) + 1;
			g.drawLine(x , y , x + xl , y + yl);
		}
		g.setColor(getRandColor(160,200));
		//生成随机干扰线
		for (int i = 0 ; i < 80 ; i++)
		{
			int x = random.nextInt(IMG_WIDTH - 1);
			int y = random.nextInt(IMG_HEIGTH - 1);
			int xl = random.nextInt(12) + 1;
			int yl = random.nextInt(6) + 1;
			g.drawLine(x , y , x - xl , y - yl);
		}
		//设置绘制字符的字体
		g.setFont(mFont);
		//用于保存系统生成的随机字符串
		String sRand = "";
		for (int i = 0 ; i < 6 ; i++)
		{
			String tmp = getRandomChar();
			sRand += tmp;
			//获取随机颜色
			g.setColor(new Color(20 + random.nextInt(110)
				,20 + random.nextInt(110)
				,20 + random.nextInt(110)));
			//在图片上绘制系统生成的随机字符
			g.drawString(tmp , 15 * i + 10,15);
		}
		//获取HttpSesssion对象
		HttpSession session = request.getSession(true);
		//将随机字符串放入HttpSesssion对象中 
		session.setAttribute("rand" , sRand);
		g.dispose();
		//向输出流中输出图片
		ImageIO.write(image, "JPEG", response.getOutputStream());
	}
	//定义获取随机字符串方法
	private String getRandomChar()
	{
		//生成一个0、1、2的随机数字
		int rand = (int)Math.round(Math.random() * 2);
		long itmp = 0;
		char ctmp = '\u0000';
		switch (rand)
		{
			//生成大写字母
			case 1:
				itmp = Math.round(Math.random() * 25 + 65);
				ctmp = (char)itmp;
				return String.valueOf(ctmp);
			//生成小写字母
			case 2:
				itmp = Math.round(Math.random() * 25 + 97);
				ctmp = (char)itmp;
				return String.valueOf(ctmp);
			//生成数字
			default :
				itmp = Math.round(Math.random() * 9);
				return  itmp + "";
		}
	}
}

servlet配置：

  <servlet>
    <servlet-name>AuthImg</servlet-name>
    <servlet-class>com.neowave.health.web.AuthImg</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>AuthImg</servlet-name>
    <url-pattern>/authImg</url-pattern>
  </servlet-mapping>

图片导入：

				<div>
				<input type="text" id="vercode" name="vercode" style="width: 50%; height: 30px"></input><span id="vercode_mess"
						style="color: red;"></span>
						<br>
				验证码：<img name="d" src="/neowave_health/authImg" onclick="refresh(this);">
				</div>

刷新JS：

function refresh(el) {
	el.src="/neowave_health/authImg?" + Math.random();
}

登陆处理：

package com.neowave.health.action;


import java.util.List;

import javax.annotation.Resource;

import org.apache.log4j.Logger;

import com.hansci.base.action.BaseAction;
import com.neowave.health.entity.NeowaveFamily;
import com.neowave.health.entity.NeowaveUser;
import com.neowave.health.service.HealthFamilyService;
import com.neowave.health.service.HealthUserService;
import com.neowave.health.util.WebConstant;
import com.opensymphony.xwork2.ActionContext;
import static com.neowave.health.util.CipherUtil.*;

/**
 * @author zhuzhengke
 * 
 */

public class LoginAction extends BaseAction {

	private static final long serialVersionUID = 8372896842000249263L;
	@Resource
	private HealthFamilyService healthFamilyService;
	
	@Resource
	private HealthUserService healthUserService;
	
	private List<NeowaveUser> neowaveUsers;
	
	//登录的验证码
	private String vercode;
	private String username;
    private String password;
    private NeowaveFamily family;
    
    private Logger log = Logger.getLogger(LoginAction.class);
	
	public String execute() {
		//创建ActionContext实例
		ActionContext ctx = ActionContext.getContext();
		//获取HttpSession中的rand属性
		String ver2 = (String)ctx.getSession().get("rand");
		
		log.info("验证码是："+ver2);
		
		log.info("输入的验证码是："+vercode);
		
		log.info("password="+password);
		password = generatePassword(password);
        log.info("MD5之后的密码是："+generatePassword(password));
		//System.out.println("---------------"+healthUserService.isValidate("zzk", "123"));
		log.info("username="+username);
		log.info("password="+password);

		family = healthFamilyService.get("familyName", username);
		log.info("---------"+family.getFamilyPassword()+"-----------"+family.getFamilyName());

		if(vercode.equalsIgnoreCase(ver2)) {
			if(null!=family.getFamilyPassword() && family.getFamilyPassword().equalsIgnoreCase(password)) {
				//将当前用户的ID放到session中
				ctx.getSession().put(WebConstant.FAMILY_ID, family.getFamilyID());
				
				log.info("---------------"+ctx.getSession().get(WebConstant.FAMILY_ID));
				
				neowaveUsers = healthUserService.getList("healthFamily.familyID", ctx.getSession().get(WebConstant.FAMILY_ID));
				
				log.info("---------------"+family.getNeowaveUsers().size());
				return LIST;
			} else {
				return ERROR;
			}
		}
		else {
			return ERROR;
		}

	}

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public List<NeowaveUser> getNeowaveUsers() {
		return neowaveUsers;
	}

	public void setNeowaveUsers(List<NeowaveUser> neowaveUsers) {
		this.neowaveUsers = neowaveUsers;
	}

	//vercode属性的setter和getter方法
	public void setVercode(String vercode)
	{
		this.vercode = vercode;
	}
	public String getVercode()
	{
		return this.vercode;
	}

}