防止表单重复提交的原理与struts的实现-CSDN博客

本文链接：https://blog.csdn.net/iteye_15890/article/details/82165747

本文详细阐述了用户注册过程中的核心操作，包括生成Token、验证用户名及Token有效性，以及错误处理与状态反馈。

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第一个action：
public class RegUserUI extends Action {

@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
[b][color=blue]saveToken(request)[/color][/b];//生成Token
// return new ActionForward("/WEB-INF/user/reUser.jsp");
return mapping.findForward("success");
}

}

第二个action：
public class RegUser extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {

UserForm userForm = (UserForm)form;
ActionMessages errors = new ActionMessages();
if(userForm.getUser().getUsername().trim().equals("wxx")) {
errors.add("username", new ActionMessage("error.username.wrong",getResources(request).getMessage(getLocale(request), "prompt.name")));//
}
[b][color=blue]// if Token disable
if(!isTokenValid(request)){
errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("重复提交",false));[/color][/b] }
if(!errors.isEmpty()) {
saveErrors(request, errors);
return mapping.getInputForward();
}
//clear Token
[color=blue][b]resetToken(request);[/b][/color] return mapping.findForward("success");
}
}

画面：<html:errors/>