@RequestMapping("/getVcode")
public void createCode(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
//生成随机字串
String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
//存入会话session
HttpSession session = request.getSession(true);
//删除以前的
session.removeAttribute("TEMP_USER_CODE");
session.setAttribute("TEMP_USER_CODE", verifyCode.toLowerCase());
String tempusercode = (String) request.getSession().getAttribute("TEMP_USER_CODE");
System.out.println("--------"+tempusercode);
//生成图片
int w = 150, h = 50;
VerifyCodeUtils.outputImage(w, h, response.getOutputStream(), verifyCode);
---------------------------------------------------------------------------------------页面
<form action="<%=basePath%>userManager/regedit.html" type="post">
<input type="username" name="username" placeholder="请输入用户名"><span></span><br/>
<input type="password" name="password" placeholder="请输入密码"><span></span><br/>
<input type="password" name="password" placeholder="再次输入密码"><span></span><br/>
<div onclick="changeImg()">
<img id="img" src="<%=basePath%>getVcode" />
</div>
<div >
<input id="vcode" name="vcode" type="text" placeholder="输入验证码">
</div>
<input type="submit" value="注册">
</form>
------------------------------------------------------------------------controller
/*用户注册 */
@RequestMapping("/regedit.html")
public Map register(String username,String password,String vcode,HttpServletRequest request){
Map map = new HashMap();
boolean success = false;
String tempusercode = (String) request.getSession().getAttribute("TEMP_USER_CODE");
System.out.println("验证码为"+tempusercode);========================打印出来为null??????
if(!vcode.toLowerCase().equals(tempusercode)||!vcode.toUpperCase().equals(tempusercode)){
map.put("success",success);
return map;
}
success = userManagerService.register(username,password);
map.put("success",success);
return map;
}
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