我有控制器类,具有以下请求映射方法。
控制器方法。
@RequestMapping(value="/",method=RequestMethod.GET)
public String appStart(@ModelAttribute("tempAdmin") Admin tempAdmin) {
return "login.jsp";
}
@RequestMapping(method = RequestMethod.POST,name="doLogin")
public ModelAndView doLogin(@ModelAttribute("tempAdmin") Admin tempAdmin, HttpServletRequest request) {
ModelAndView mvc = new ModelAndView();
/*
Buisness logic
*/
mvc.setViewName("home.jsp");
return mvc;
}
@RequestMapping("doLogout")
public String logout(HttpServletRequest request) {
HttpSession session = request.getSession(false);
if(session != null){
session.invalidate();
}
return "login.jsp";
}
的login.jsp
<form:form action="doLogin" modelAttribute="tempAdmin" cssClass="form-horizontal">
<div class="form-group">
<label for="username" class="col-sm-2 control-label">Username</label>
<div class="col-sm-10">
<form:input cssClass="form-control" path="adminId" placeholder="username" />
</div>
</div>
<div class="form-group">
<label for="passwd" class="col-sm-2 control-label">Password</label>
<div class="col-sm-10">
<form:password path="password" cssClass="form-control" id="passwd" placeholder="password" />
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default">Sign in</button>
</div>
</div>
</form:form>
栈跟踪。
Caused by: java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'tempAdmin' available as request attribute
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
答案 0 :(得分:1)
我会告诉你如何更改控制器,以避免绑定结果问题。试试这个:
@RequestMapping(method = RequestMethod.POST,name="doLogin")
public String doLogin(@ModelAttribute("tempAdmin") Admin tempAdmin, HttpServletRequest request,Model model) {
model.addAttribute("tempadmin",new Admin());
// business logic
return "home";
}
试试这个,如果你有其他类,那么也为它添加model.addAttribute。你也可以发布你的JSP吗?