struts2验证码

<script>function StorePage(){d=document;t=d.selection?(d.selection.type!='None'?d.selection.createRange().text:''):(d.getSelection?d.getSelection():'');void(keyit=window.open('http://www.365key.com/storeit.aspx?t='+escape(d.title)+'&u='+escape(d.location.href)+'&c='+escape(t),'keyit','scrollbars=no,width=475,height=575,left=75,top=20,status=no,resizable=yes'));keyit.focus();}</script>

验证码大多是jsp,servlet写的. 我拿来主义了, 再自己完善了一下(我一直努力想要站在巨人的肩膀)

首先是页面 test.jsp

< %@ page contentType ="text/html; charset=GBK"% >
< html >
< head >
< title >test image code </title>
< script type ="text/javascript" >
function reloadImg(){
var i = Math.random();
document.getElementById("imgCode").src="imgcode?"+i;
}
</script>
</head>
< body >
< form action ="imageCodeCheck.action" method ="POST" name ="form1" >
< img id ="imgCode" src ="imgcode" border ="0" >
< input type ="text" name ="thecode" /> < a href ="javascript:reloadImg();" >看不清？ </a>
< font color ="red" >${requestScope.imgCodeError } </font>
< br >
< input type ="submit" name ="submit" value =" 提 交 " />
</form>
</body>
</html>

接下来是Action了 ImageCodeCheck.java

package com.lichen.action;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.SessionAware;

import cn.com.enorth.util.imgcode.ImageCodeUtils;

import com.opensymphony.xwork2.ActionSupport;

public class ImageCodeCheck extends ActionSupport implements
ServletRequestAware, SessionAware {

private HttpServletRequest request;
private Map session;

@Override
public String execute() throws Exception {
if (ImageCodeUtils.isGoodCode(request, "thecode")) {
return SUCCESS;
} else {
request.setAttribute( "imgCodeError", "验证码输入不正确");
}
return INPUT;
}

@Override
public void setServletRequest(HttpServletRequest request) {
this.request = request;
}

@Override
public void setSession(Map session) {
this.session = session;
}
}

struts的配置很普通 struts.xml

<? xml version ="1.0" encoding ="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
< struts >
< constant name ="struts.i18n.encoding" value ="GBK" > </ constant >
< constant name ="struts.locale" value ="zh_CN" > </ constant >
< package name ="struts2" extends ="struts-default" >
< action name ="imageCodeCheck" class ="com.lichen.action.ImageCodeCheck" >
< result name ="success" >index.jsp </ result >
< result name ="input" >test.jsp </ result >
</ action >
</ package >
</ struts >

然后就是web的配置了 web.xml

<? xml version ="1.0" encoding ="UTF-8" ?>
< web-app version ="2.5"
xmlns ="http://java.sun.com/xml/ns/javaee"
xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" >

<!-- struts2 -->
< filter >
< filter-name >struts2 </ filter-name >
< filter-class >
org.apache.struts2.dispatcher.FilterDispatcher
</ filter-class >
</ filter >
< filter-mapping >
< filter-name >struts2 </ filter-name >
< url-pattern >/* </ url-pattern >
</ filter-mapping >

<!-- spring -->
< context-param >
< param-name >contextConfigLocation </ param-name >
< param-value >classpath*:applicationContext-*.xml </ param-value >
</ context-param >

< listener >
< listener-class >
org.springframework.web.context.ContextLoaderListener
</ listener-class >
</ listener >

<!-- hibernate 的session 创建关闭 -->
< filter >
< filter-name >hibernateFilter </ filter-name >
< filter-class >
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
</ filter-class >
</ filter >
< filter-mapping >
< filter-name >hibernateFilter </ filter-name >
< url-pattern >/* </ url-pattern >
</ filter-mapping >

<!-- 验证码 -->
< servlet >
< servlet-name >imagecodeservlet </ servlet-name >
< servlet-class >cn.com.enorth.util.imgcode.ImageCodeServlet </ servlet-class >
< init-param >
< param-name >type </ param-name >
< param-value >1 </ param-value >
</ init-param >
< init-param >
< param-name >length </ param-name >
< param-value >4 </ param-value >
</ init-param >
</ servlet >
< servlet-mapping >
< servlet-name >imagecodeservlet </ servlet-name >
< url-pattern >/imgcode </ url-pattern >
</ servlet-mapping >

< welcome-file-list >
< welcome-file >index.jsp </ welcome-file >
</ welcome-file-list >
</ web-app >

重点在验证码的配置