Thymeleaf + Spring：BindingResult 和 bean 名称“User”
当我想要转到 myweb/register.html 时出现该错误有人可以给我建议我做错了什么吗？在 register.html 中，我突出显示了 ${User}、*{firstName}、*{lastName}、*{email} 和 *{password}
路径 [] 上下文中 servlet [dispatcherServlet] 的 Servlet.service() 抛出异常 [请求处理失败；嵌套异常是org.thymeleaf.exceptions.TemplateInputException：模板解析期间发生错误（模板：“类路径资源[templates/register.html]”）]，其根本原因
java.lang.IllegalStateException：BindingResult 和 bean 名称“User”的普通目标对象都不能作为请求属性
控制器：
@RequestMapping(value = { "/register" }, method = RequestMethod.GET)
public ModelAndView register(){
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("register"); // resources/templates/register.html
return modelAndView;
注册.html：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
<title>Registration Form</title>
<!-- link rel="stylesheet" type="text/css" th:href="@{/css/registration.css}" /-->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body style="background-color: #ededed;">
<div style="background-color: #337ab7; height: 50px;"></div>
<div class="container-fluid" style="margin-top: 30px;">
<div class="row col-lg-4 col-lg-offset-4" style="margin-top: 40px; background-color: #fff; padding: 20px; border: solid 1px #ddd;">
<form autocomplete="off" action="#" th:action="@{/register}" th:object="${User}" method="POST" class="form-signin" role="form">
<h3 class="form-signin-heading">Registration Form</h3>
<div class="form-group">
<div class="">
<input type="text" th:field="*{firstName}" placeholder="Name" class="form-control" />
</div>
BIG阳1回答
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慕标琳琳
您必须将空的 User 对象添加到模型中。尝试以下操作： @RequestMapping(value = { "/register" }, method = RequestMethod.GET)public ModelAndView register(){ ModelAndView modelAndView = new ModelAndView(); modelAndView.addObject("User", new User()); modelAndView.setViewName("register"); // resources/templates/register.html return modelAndView;
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Java