JFinal框架——简单验证码

1 <form action="/jfinal_verification/user/login1" method="post"> 
2     用户名：<input type="text" name="name"/></br> </br>
3     密码:&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type="password" name="password"/> </br> 
4     <!-- 设置name为code 用于后台接收验证码并进行校验--> 
5     验证码：<input type="text" name="code"/>
6     <!-- 获取验证码并设置点击事件，点击之后获取新的验证码 -->
7     <img  src="/jfinal_verification/user/code" onclick="this.src=‘/jfinal_verification/user/code?x=‘+Math.random()"></br></br>
8     <button type="submit">登陆</button> 
9 </form> 

1 public void code() {
2       CaptchaRender img = new CaptchaRender(RANDOM_CODE_KEY);     
3       render(img);
4 }

 1 private static final String RANDOM_CODE_KEY = "1";    
 2 public void login1(){
 3     String inputRandomCode = getPara("inputRandomCode");
 4     boolean loginSuccess = CaptchaRender.validate(this, inputRandomCode.toUpperCase(), RANDOM_CODE_KEY);
 5     if (loginSuccess) {
 6          renderText("successful");
 7     }else{
 8          renderText("failed");
 9     }
10}

1 public void code(){ 
2         renderCaptcha(); 
3 } 

 1 private static final String FORM_ITEM_CODE = "inputRandomCode";
 2 
 3 public void login1(){ 
 4     String result = ""; 
 5     //验证验证码 
 6     if(validateCaptcha(FORM_ITEM_CODE)){ 
 7         result = "验证成功"; 
 8     }
 9     else{ 
10         result = "验证失败"; 
11     } 
12     renderText(result); 
13 } 

1 onclick="this.src=‘/user/code?x=‘+Math.random()">