问题描述
在我的Spring Boot thymeleaf应用程序中,我正在努力弄清楚如何将从服务层返回的错误消息显示在UI上。
我的UI代码(index.html)是
<div class="u-expanded-width-xs u-form u-form-1">
<form class="u-clearfix u-form-horizontal u-form-spacing-10 u-inner-form"
method="POST"
modelAttribute="indexFormBean" name="form"
style="padding: 0;"
th:action="@{/home}" th:object="${indexFormBean}">
<div class="u-form-group u-form-name u-form-group-1">
<label for="email-dbf3"
class="u-form-control-hidden u-label">Email</label>
<input type="email" placeholder="Enter a valid email address"
id="email-dbf3" name="email"
class="u-border-1 u-border-grey-30 u-input u-input-rectangle u-white"
required="true" autofocus="autofocus">
</div>
<div class="u-form-email u-form-group u-form-group-2">
<label for="name-dbf3"
class="u-form-control-hidden u-label">Name</label>
<input type="text" placeholder="Enter a valid password" id="name-dbf3"
name="password"
class="u-border-1 u-border-grey-30 u-input u-input-rectangle u-white"
required="true">
</div>
<div class="u-align-left u-form-group u-form-submit u-form-group-3">
<button type="submit" name="submit" class="btn btn-primary btn-lg">Login
</button>
</div>
<p th:if="${#fields.hasErrors('email')}" th:errors="*{email}">Description errors</p>
</form>
</div>
提交表单时调用的控制器方法如下
@PostMapping("/home")
public String authenticate(@ModelAttribute IndexFormBean indexFormBean,Model model){
String loginResponse = userService.login(indexFormBean.getEmail(),indexFormBean.getPassword());
if(StringUtils.isEmpty(loginResponse)){
//Some error that is returned from the service layer
return "index";
}
return "home";
}
现在,如果authenticate
方法需要在UI(index.html)上显示一些错误,该怎么办?
解决方法
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