struts2+hibernate 实现B2C电子商务网站的登录 、注册中验证码的实现（源码）

下边只在注册中实现

1、首先是在Action中写出生成验证码所需的方法（下边是在MemberAction.java中写）

package www.csdn.dbshop.action;

import org.apache.struts2.ServletActionContext;

import www.csdn.dbshop.domain.Admin;
import www.csdn.dbshop.domain.Member;
import www.csdn.dbshop.service.BaseService;
import www.csdn.dbshop.service.MemberService;
import www.csdn.dbshop.service.impl.BaseServiceImpl;
import www.csdn.dbshop.service.impl.MemberServiceImpl;
import www.csdn.dbshop.util.Pagination;
import www.csdn.dbshop.util.StringUtil;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.util.Random;

import javax.imageio.ImageIO;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.servlet.http.HttpSession;

public class MemberAction extends BaseAction{
    private BaseService baseService = new BaseServiceImpl();
    private MemberService memberService = new MemberServiceImpl();
    private String cuemail;
    private boolean cueflag;
    private Member member;
    private String acodet;
    private boolean cacodet;
    private String sRand = "";
    private String acode;

    public void setAcode(String acode) {
        this.acode = acode;
    }

    public boolean isCacodet() {
        return cacodet;
    }

    public void setAcodet(String acodet) {
        this.acodet = acodet;
    }

    public void setMember(Member member) {
        this.member = member;
    }

    public Member getMember() {
        return member;
    }

    public boolean isCueflag() {
        return cueflag;
    }

    public void setCacodet(boolean cacodet) {
        this.cacodet = cacodet;
    }

    public void setCuemail(String cuemail) {
        this.cuemail = cuemail;
    }

    public String checkuemail() {

        cueflag = baseService.checkProperty(Member.class, "email", cuemail,
                null);
        return "cuemail";
    }

    public void setCueflag(boolean cueflag) {
        this.cueflag = cueflag;
    }

    public String register() {
        if (((String) ServletActionContext.getRequest().getSession()
                .getAttribute("checkcode")).equalsIgnoreCase(acode)) {
            Member user = new Member();
            user.setEmail(member.getEmail());
            user.setPass(member.getPass());
            boolean sflag = baseService.saveObject(user);
            if (sflag) {
                return "register";
            } else {
                return "registererror";
            }
        } else {
            ServletActionContext.getRequest().setAttribute("register",
                    "acerror");
            return "registererror";
        }
    }

    public String login() {
        if (((String) ServletActionContext.getRequest().getSession()
                .getAttribute("checkcode")).equalsIgnoreCase(acode)) {
            Member user = memberService.login(member.getEmail(),
                    member.getPass());

            if (user == null) {
                ServletActionContext.getRequest()
                        .setAttribute("login", "error");
                return "loginerror";
            } else {
                ServletActionContext.getRequest().getSession()
                        .setAttribute("user", user);
                return "login";
            }
        } else {
            ServletActionContext.getRequest().getSession()
                    .setAttribute("login", "acerror");
            return "loginerror";
        }

    }

    public String checkAcodet() {
        if (((String) ServletActionContext.getRequest().getSession()
                .getAttribute("checkcode")).equalsIgnoreCase(acodet)) {
            cacodet = true;
        } else {
            cacodet = false;
        }

        return "checkacode";
    }

        
    
    
/**
     * ****************** * Action生成验证码* ******************
     */
    private Font imgFont = new Font("Times New Roman", Font.BOLD, 17);

    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);

    }

    public void checkCodeImage() {

        HttpServletRequest request = ServletActionContext.getRequest();

        HttpServletResponse response = ServletActionContext.getResponse();

        response.setHeader("Pragma", "No-cache");

        response.setHeader("Cache-Control", "no-cache");

        response.setDateHeader("Expires", 0);

        response.setContentType("image/jpeg");

        int width = 75, height = 20;

        BufferedImage image = new BufferedImage(width, height,

        BufferedImage.TYPE_INT_RGB);

        Graphics g = image.getGraphics();

        Random random = new Random();

        g.setColor(getRandColor(200, 250));

        g.fillRect(1, 1, width - 1, height - 1);

        g.setColor(new Color(102, 102, 102));

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

        g.setFont(imgFont);

        g.setColor(getRandColor(160, 200));

        for (int i = 0; i < 155; i++) {

            int x = random.nextInt(width - 1);

            int y = random.nextInt(height - 1);

            int xl = random.nextInt(6) + 1;

            int yl = random.nextInt(12) + 1;

            g.drawLine(x, y, x + xl, y + yl);

        }

        for (int i = 0; i < 70; i++) {

            int x = random.nextInt(width - 1);

            int y = random.nextInt(height - 1);

            int xl = random.nextInt(12) + 1;

            int yl = random.nextInt(6) + 1;

            g.drawLine(x, y, x - xl, y - yl);

        }

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

            int itmp = 0;

            if (random.nextInt(2) == 1) {

                itmp = random.nextInt(26) + 65;

                char ctmp = (char) itmp;

                sRand += String.valueOf(ctmp);

                g.setColor(new Color(20 + random.nextInt(110), 20 + random

                .nextInt(110), 20 + random.nextInt(110)));

                g.drawString(String.valueOf(ctmp), 15 * i + 10, 16);

            } else if (random.nextInt(3) == 1) {

                itmp = random.nextInt(26) + 97;

                char ctmp = (char) itmp;

                sRand += String.valueOf(ctmp);

                g.setColor(new Color(20 + random.nextInt(110), 20 + random

                .nextInt(110), 20 + random.nextInt(110)));

                g.drawString(String.valueOf(ctmp), 15 * i + 10, 16);

            } else {

                itmp = random.nextInt(9);

                sRand += String.valueOf(itmp);

                g.setColor(new Color(20 + random.nextInt(110), 20 + random

                .nextInt(110), 20 + random.nextInt(110)));

                g.drawString(String.valueOf(itmp), 15 * i + 10, 16);

            }

        }

        HttpSession session = request.getSession(true);

        session.setAttribute("checkcode", sRand);

        g.dispose();

        try {

            ImageIO.write(image, "JPEG", response.getOutputStream());

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

2.在struts.xml中

<result name="checkacode" type="json">
                <param name="root">cacodet</param>
            </result>
            <result name="register">/login.jsp</result>
            <result name="registererror">/personreg.jsp</result>
            <result name="login">/index.jsp</result>
            <result name="loginerror">/login.jsp</result>

3.在register.jsp中

<script type="text/javascript">  
        function reImg(){  
            var img = document.getElementById("picture");  
            img.src=img.src + "?"; 
        }  
    </script> 

    <TR>

        <TD class=mustcontent><SPAN>*</SPAN>验证码：</TD>

        <td><input type="text" id="acodet" name="acode" style="width:110px" value="${randomCode}"><span id="acode"><a href="javascript:void(0);" onclick="reImg();" class="changeacode"><img id="picture"        src="${pageContext.request.contextPath }/csdn/MemberAction_checkCodeImage.action?nowtime="                  style="position:relative;top:5px;border:0;"></a> </span><span
    style="font-size:12px;color:rgb(150,150,150);margin-left:5px">看不清？<a class="changeacode"              href="javascript:void(0);" onclick="reImg();">换一张</a></span>
                                                
        </td>

    </TR>

4.效果如下：