71
驗證碼相關
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
{
//定義圖形驗證碼中繪製字符的字體
private final Font mFont =
new Font("Arial Black", Font.PLAIN, 16);
//定義圖形驗證碼的大小
private final int IMG_WIDTH = 100;
private final int IMG_HEIGTH = 18;
//定義一個獲取隨機顏色的方法
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);
//得到隨機顏色
return new Color(r , g , b);
}
//重寫service方法，生成對客戶端的響應
public void service(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
//設置禁止緩存
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);
//為圖形驗證碼繪製邊框
g.setColor(new Color(102 , 102 , 102));
g.drawRect(0, 0, IMG_WIDTH - 1, IMG_HEIGTH - 1);
g.setColor(getRandColor(160,200));
//生成隨機幹擾線
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));
//生成隨機幹擾線
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);
}
//設置繪製字符的字體
g.setFont(mFont);
//用於保存係統生成的隨機字符串
String sRand = "";
for (int i = 0 ; i < 6 ; i++)
{
String tmp = getRandomChar();
sRand += tmp;
//獲取隨機顏色
g.setColor(new Color(20 + random.nextInt(110)
,20 + random.nextInt(110)
,20 + random.nextInt(110)));
//在圖片上繪製係統生成的隨機字符
g.drawString(tmp , 15 * i + 10,15);
}
//獲取HttpSesssion對象
HttpSession session = request.getSession(true);
//將隨機字符串放入HttpSesssion對象中
session.setAttribute("rand" , sRand);
g.dispose();
//向輸出流中輸出圖片
ImageIO.write(image, "JPEG", response.getOutputStream());
}
//定義獲取隨機字符串方法
private String getRandomChar()
{
//生成一個0、1、2的隨機數字
int rand = (int)Math.round(Math.random() * 2);
long itmp = 0;
char ctmp = '\u0000';
switch (rand)
{
//生成大寫字母
case 1:
itmp = Math.round(Math.random() * 25 + 65);
ctmp = (char)itmp;
return String.valueOf(ctmp);
//生成小寫字母
case 2:
itmp = Math.round(Math.random() * 25 + 97);
ctmp = (char)itmp;
return String.valueOf(ctmp);
//生成數字
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>
圖片導入：
<div> <input type="text" name="vercode" ></input><span ></span> <br> 驗證碼：<img name="d" src="/neowave_health/authImg" > </div>
刷新JS：
function refresh(el) {
el.src="/neowave_health/authImg?" + Math.random();
}
登陸處理：
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;
//登錄的驗證碼
private String vercode;
private String username;
private String password;
private NeowaveFamily family;
private Logger log = Logger.getLogger(LoginAction.class);
public String execute() {
//創建ActionContext實例
ActionContext ctx = ActionContext.getContext();
//獲取HttpSession中的rand屬性
String ver2 = (String)ctx.getSession().get("rand");
log.info("驗證碼是："+ver2);
log.info("輸入的驗證碼是："+vercode);
log.info("password="+password);
password = generatePassword(password);
log.info("MD5之後的密碼是："+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)) {
//將當前用戶的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屬性的setter和getter方法
public void setVercode(String vercode)
{
this.vercode = vercode;
}
public String getVercode()
{
return this.vercode;
}
}
最後更新：2017-04-03 16:59:48