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我与Spring MVC的工作,我得到了以下错误的纯目标对象Spring MVC的:既不BindingResult也不是为bean名称“用户”可以作为
Caused by: java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'user' available as request attribute
,当我们都没有通过,通常会出现此错误/将该对象添加到控制器代码内的模型中。 BUT我已经完成了,但仍然出现错误。 我已经通过互联网上的解决方案看完全相同的错误,但他们都指向在控制器中添加新的对象。不知道为什么对我来说它不工作。
不知道我做错了什么。
这是我的login.html形式
<div class="container">
<div class="starter-template">
<h2>Login</h2>
</div>
<form th:object="${user}" th:method="post" th:action="validateUser" class="form-horizontal">
<table class="table table-striped">
<tr>
<td>
<div class="control-group">
<label class="control-label">Email</label>
</div>
</td>
<td>
<div class="controls">
<input type="text" class="form-control" th:field="*{emailAddress}" />
<label class="control-label"></label>
</div>
</td>
</tr>
<tr>
<td>
<div class="control-group">
<label class="control-label">Password</label>
</div>
</td>
<td>
<div class="controls">
<input type="password" class="form-control" th:field="*{password}" />
<label class="control-label"></label>
</div>
</td>
</tr>
<tr>
<td></td>
<td>
<div class="form-actions pull-right">
<input type="submit" name="_eventId_validateUser" value="Login" class="btn btn-success" tabindex="5" />
<input type="submit" name="_eventId_cancel" value="Cancel" class="btn btn-danger " tabindex="6" />
</div>
</td>
</tr>
</table>
</form>
我Controller.java
package com.niti.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.niti.authentication.service.AuthenticationService;
import com.niti.bo.UserBO;
import com.niti.service.exception.ServiceBusinessException;
@Controller
public class LoginController {
private static final Logger Logger = LoggerFactory.getLogger(LoginController.class);
@Autowired
private AuthenticationService authenticationService;
@RequestMapping(value="/login" , method=RequestMethod.GET)
public String login(Model model) {
model.addAttribute("user", new UserBO());
return "login";
}
@RequestMapping(value="/validateUser" , method=RequestMethod.POST)
public String processLoginInfo(@ModelAttribute UserBO userBO) throws ServiceBusinessException {
UserBO user = authenticationService.authenticateUser(userBO.getEmailAddress(), userBO.getPassword());
return "userDetails";
}
}