验证码相关

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 AuthImgextends 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;@Resourceprivate HealthFamilyService healthFamilyService;@Resourceprivate 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;}}