安全码

<pre name="code" class="html"><p>
<span id="sure-word" class="fond">验证码：</span>
<span style="width:70px">
<input id="Verification" name="Verification" type="text"
size="6" style="width:60px"/>
</span>
<span id="vcodeValidMsg"></span>
<span style="margin-left:10px;">
<img src="EC/SecurityCodeImage" id="Verify" style="cursor: hand;" alt="看不清，换一张" />
</span>
</p>
<span id="Verification.info" style="color:red"></span>

<pre name="code" class="javascript">//除掉字符串两端的空格function strip(str) {var reg = /(^\s*)|(\s*$)/g;return str.replace(reg, '');}function verfy_verfy11() {//flag.code = false;//设置成为通过检測var code = strip(document.getElementById("Verification").value);//非空检測if (code == "") {$("#Verification\\.info").html("<img src='EC/user/images/wrong.gif'/>验证码不能为空!");return;}//ajax检測$("#Verification\\.info").html(//"<img src='../images/window_loading.gif'/>正在检測...");$.post("EC/user/valid.action", {"code" : code}, function(data) {if (data) {$("#Verification\\.info").html("<img src='EC/user/images/right.gif'/>验证码正确!");flag.code = true;} else {$("#Verification\\.info").html("<img src='EC/user/images/wrong.gif'/>验证码错误!");}}));}

<script>$(function() {//点击图片更换验证码$("#Verify").click(function() {$(this).attr("src","EC/SecurityCodeImage?timestamp="+ new Date().getTime());});});window.onload = function() {var verifyObj = document.getElementById("Verify");verifyObj.onclick = function() {this.src = "EC/SecurityCodeImage?timestamp="+ new Date().getTime();};};</script>

$(document).ready(function() {//验证码检測$(function() {$("#Verification").blur(function() {verfy_verfy11();});});});

      <pre name="code" class="html"> <package name="User" extends="struts-default" namespace="/EC"><!-- 验证码 --><action name="SecurityCodeImage" class="biz.cld.web.action.user.SecurityCodeImageAction"><result name="success" type="stream"><param name="contentType">image/jpeg</param><param name="inputName">imageStream</param><param name="bufferSize">2048</param></result></action></package>

<!--  ajax verfy--><package name="userJson" extends="json-default" namespace="/EC"><!-- registerNameVerfy ajax--><action name="registerNameVerfy"  class="userManageAction"  method="registerNameVerfy"><result name="success" type="json"><param name="root">verfy</param></result><result name="error" type="json"><param name="root">verfy</param></result></action><!-- registerEmailVerfy ajax--><action name="registerEmailVerfy" class="userManageAction"  method="registerEmailVerfy"><result name="success"><param name="root">verfy</param></result><result name="error" type=""><param name="root">verfy</param></result></action><!-- ajax校验验证码 --><action name="valid" class="biz.cld.web.action.user.ValidAction"><result name="success" type="json"><param name="root">ok</param></result></action></package>

package biz.cld.web.action.user;import java.util.Arrays;/*** 工具类。生成随机验证码字符串* @version 1.0 2012/08/21* @author <span style="font-family: Arial, Helvetica, sans-serif;">曾修建</span>**/public class SecurityCode {/*** 验证码难度级别，Simple仅仅包括数字，Medium包括数字和小写英文，Hard包括数字和大写和小写英文*/public enum SecurityCodeLevel {Simple,Medium,Hard};/*** 产生默认验证码，4位中等难度* @return  String 验证码*/public static String getSecurityCode(){return getSecurityCode(6,SecurityCodeLevel.Medium,false);}/*** 产生长度和难度随意的验证码* @param length  长度* @param level   难度级别* @param isCanRepeat  是否可以出现反复的字符，假设为true，则可能出现 5578这样包括两个5,假设为false。则不可能出现这样的情况* @return  String 验证码*/public static String getSecurityCode(int length,SecurityCodeLevel level,boolean isCanRepeat){//随机抽取len个字符int len=length;//字符集合(除去易混淆的数字0、数字1、字母l、字母o、字母O)char[] codes={'1','2','3','4','5','6','7','8','9','a','b','c','d','e','f','g','h','i','j','k','m','n','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z'};//依据不同的难度截取字符数组if(level==SecurityCodeLevel.Simple){codes=Arrays.copyOfRange(codes, 0,9);}else if(level==SecurityCodeLevel.Medium){codes=Arrays.copyOfRange(codes, 0,33);}else if(level==SecurityCodeLevel.Hard){codes=Arrays.copyOfRange(codes, 0,57);}//字符集合长度int n=codes.length;//抛出执行时异常if(len>n&&isCanRepeat==false){throw new RuntimeException(String.format("调用SecurityCode.getSecurityCode(%1$s,%2$s,%3$s)出现异常，" +"当isCanRepeat为%3$s时，传入參数%1$s不能大于%4$s",len,level,isCanRepeat,n));}//存放抽取出来的字符char[] result=new char[len];//推断是否能出现反复的字符if(isCanRepeat){for(int i=0;i<result.length;i++){//索引 0 and n-1int r=(int)(Math.random()*n);//将result中的第i个元素设置为codes[r]存放的数值result[i]=codes[r];}}else{for(int i=0;i<result.length;i++){//索引 0 and n-1int r=(int)(Math.random()*n);//将result中的第i个元素设置为codes[r]存放的数值result[i]=codes[r];//必须确保不会再次抽取到那个字符，由于全部抽取的字符必须不同样。//因此，这里用数组中的最后一个字符改写codes[r]，并将n减1codes[r]=codes[n-1];n--;}}return String.valueOf(result);}}

package biz.cld.web.action.user;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import java.io.ByteArrayInputStream;import java.util.Map;import org.apache.struts2.interceptor.SessionAware;/*** 提供图片验证码* @version 1.0 2012/08/22* @author <span style="font-family: Arial, Helvetica, sans-serif;">曾修建</span>*/@SuppressWarnings("serial")public class SecurityCodeImageAction extends ActionSupport implements SessionAware{//Struts2中Map类型的sessionprivate Map<String, Object> session;//图片流private ByteArrayInputStream imageStream;public ByteArrayInputStream getImageStream() {return imageStream;}public void setImageStream(ByteArrayInputStream imageStream) {this.imageStream = imageStream;}public String execute() throws Exception {//假设开启Hard模式，能够不区分大写和小写//        String securityCode = SecurityCode.getSecurityCode(4,SecurityCodeLevel.Hard, false).toLowerCase();//获取默认难度和长度的验证码String securityCode = SecurityCode.getSecurityCode();imageStream = SecurityImage.getImageAsInputStream(securityCode);//放入session中//   session.put("SESSION_SECURITY_CODE", securityCode);ActionContext.getContext().getSession().put("SESSION_SECURITY_CODE", securityCode);return SUCCESS;}public void setSession(Map<String, Object> session) {this.session = session;}}

package biz.cld.web.action.user;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import java.io.ByteArrayInputStream;import java.util.Map;import org.apache.struts2.interceptor.SessionAware;/*** 提供图片验证码* @version 1.0 2012/08/22* @author <span style="font-family: Arial, Helvetica, sans-serif;">曾修建</span>*/@SuppressWarnings("serial")public class SecurityCodeImageAction extends ActionSupport implements SessionAware{//Struts2中Map类型的sessionprivate Map<String, Object> session;//图片流private ByteArrayInputStream imageStream;public ByteArrayInputStream getImageStream() {return imageStream;}public void setImageStream(ByteArrayInputStream imageStream) {this.imageStream = imageStream;}public String execute() throws Exception {//假设开启Hard模式，能够不区分大写和小写//        String securityCode = SecurityCode.getSecurityCode(4,SecurityCodeLevel.Hard, false).toLowerCase();//获取默认难度和长度的验证码String securityCode = SecurityCode.getSecurityCode();imageStream = SecurityImage.getImageAsInputStream(securityCode);//放入session中//   session.put("SESSION_SECURITY_CODE", securityCode);ActionContext.getContext().getSession().put("SESSION_SECURITY_CODE", securityCode);return SUCCESS;}public void setSession(Map<String, Object> session) {this.session = session;}}

package biz.cld.web.action.user;import com.opensymphony.xwork2.ActionContext;import biz.cld.framework.action.BaseActionImpl;/*** 类说明** @author 曾修建* @version 创建时间：2014-7-8 下午11:58:33*/public class ValidAction extends BaseActionImpl {private String code;//inputprivate boolean ok=false;//output-->jsonpublic String execute()throws Exception{Thread.sleep(1000);//比較String scode=(String) ActionContext.getContext().getSession().get("SESSION_SECURITY_CODE");if(code.equalsIgnoreCase(scode)){ok=true;}else{ok=false;}return "success";//调用jsonResult输出ok}public String getCode() {return code;}public void setCode(String code) {this.code = code;}public boolean isOk() {return ok;}public void setOk(boolean ok) {this.ok = ok;}}