个回答

• 胡车儿

  2017-03-18 22:57:28

  已经解决了。。贴上代码供参考

     <script type="text/javascript">

          function changeVerifyCode(){

          document.getElementById("kaptchaImage").src="Kaptcha.jpg";

          }   

  </script>

  ...

  <form action="check.jsp" method="post">

     <img src="Kaptcha.jpg" width="200" id="kaptchaImage" onclick="changeVerifyCode()" />

  <br /><a href="javascript:changeVerifyCode()">Can't read the image? Click it to get a new one.</a>

     <input type="text" name="kaptcha" value="" />

     <input type="submit" />

  </form>

  
  

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