JSP结合js实现img中src更新请求的方法
(编辑:jimmy 日期: 2024/12/25 浏览:3 次 )
本文实例讲述了JSP结合js实现img中src更新请求的方法。分享给大家供大家参考。具体如下:
1.javascript(更新的函数)
<script type="text/javascript"> function changeImage(){ var img = document.getElementById("imgVcode"); if(img.name == 1){ img.name = 2; img.src = "shop.do"; }else if(img.name == 2){ img.name = 1; img.src = "shop.do"; } } </script>
2.jsp中img和img改变的代码
<td> <img class="yzm_img" id='imgVcode' name="1" src="/UploadFiles/2021-04-02/shop.do">3.后台action代码
public ActionForward registerImage(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //将image创建,返回认证码 response.setContentType("image/jpeg"); OutputStream out = response.getOutputStream(); String strEnsure = shopManager.createImageInfo(50,20,out); //设置到session中 request.getSession().setAttribute("strEnsure", strEnsure); return null; } public ActionForward registerImage2(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { //将image创建,返回认证码 response.setContentType("image/jpeg"); OutputStream out = response.getOutputStream(); String strEnsure = shopManager.createImageInfo(50,20,out); //设置到session中 request.getSession().setAttribute("strEnsure", strEnsure); return null; }希望本文所述对大家的JavaScript程序设计有所帮助。
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