请输入图片。JSP|js实现img src更新请求。" />

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JSP|js实现img src更新请求


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  1. 1.javascript(更新的函数)
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2.jsp中img和img改变的代码
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  2. JSP|js实现img src更新请求
    文章图片
  4. class="yzm_input" οnblur="testCode(this)"/>
  7. 请输入图片中的四个字母。
  10. 看不清楚？换个图片

【JSP|js实现img src更新请求】
3.后台action代码
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  1. public ActionForward registerImage(ActionMapping mapping, ActionForm form,
  2. HttpServletRequest request, HttpServletResponse response)
  3. throws Exception {
  4. //将image创建,返回认证码
  5. response.setContentType("image/jpeg");
  6. OutputStream out = response.getOutputStream();
  7. String strEnsure = shopManager.createImageInfo(50,20,out);
  9. //设置到session中
  10. request.getSession().setAttribute("strEnsure", strEnsure);
  11. return null;
  12. }
  13. public ActionForward registerImage2(ActionMapping mapping, ActionForm form,
  14. HttpServletRequest request, HttpServletResponse response)
  15. throws Exception {
  16. //将image创建,返回认证码
  17. response.setContentType("image/jpeg");
  18. OutputStream out = response.getOutputStream();
  19. String strEnsure = shopManager.createImageInfo(50,20,out);
  21. //设置到session中
  22. request.getSession().setAttribute("strEnsure", strEnsure);
  23. return null;
  24. }

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