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我試圖在命令對象上通過@Valid創建表單並驗證其數據。 驗證執行得很好,但錯誤正在返回網絡。[Spring MVC - Thymeleaf] - 表單驗證和錯誤消息
這是我有:
HTML
<div id="content" layout:fragment="contenido">
<div sec:authorize="isAnonymous()">
<form class="form-horizontal" action="#" th:action="@{register}" th:object="${userForm}" method="post">
<input type="hidden" name="_csrf" th:value="${_csrf.token}"/>
<fieldset>
<label for="alias" th:text="#{form.register.alias}">Alias</label>
<input id="alias" type="text" th:field="*{alias}" placeholder="Su alias" required="required" autofocus="autofocus"/>
<label for="pass" th:text="#{form.register.password}">Contraseña</label>
<input id="pass" type="password" th:field="*{password}" pattern="[\w\d-_]{5,15}" required="required" th:title="#{form.error.password}"/>
<p th:if="${#fields.hasErrors('password')}" th:errors="*{password}">Error en el dato ingresado</p>
<button type="submit" name="save" class="btn btn-primary" th:text="#{control.register}">Registrarme</button>
</fieldset>
</form>
</div>
</div>
控制器
@RequestMapping(value = "/register", params = {"save"}, method = RequestMethod.POST)
public String register (final ModelMap model, @Valid final UsuarioForm userForm, final BindingResult result) {
if (result.hasErrors()) {
return "register";
} else {
return "redirect:/" + HomeController.PAGE_NAME;
}
}
「提交」,當點擊 「註冊」 方法被調用,結果。 hasErrors()爲true,因此應該顯示相同的頁面,但會發生此錯誤。
堆棧
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'userForm' available as request attribute
org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
org.thymeleaf.spring4.util.FieldUtils.getBindStatusFromParsedExpression(FieldUtils.java:396)
org.thymeleaf.spring4.util.FieldUtils.getBindStatus(FieldUtils.java:323)
org.thymeleaf.spring4.util.FieldUtils.getBindStatus(FieldUtils.java:289)
org.thymeleaf.spring4.processor.attr.AbstractSpringFieldAttrProcessor.processAttribute(AbstractSpringFieldAttrProcessor.java:98)
org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87)
org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212)
org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017)
org.thymeleaf.dom.Node.processNode(Node.java:972)
如果我 「窗體」,在控制這種方式添加到模型:
控制器修改
@RequestMapping(value = "/register", params = {"save"}, method = RequestMethod.POST)
public String register (final ModelMap model, @Valid final UsuarioForm userForm, final BindingResult result) {
if (result.hasErrors()) {
model.addAttribute("userForm", userForm); //THIS LINE IS ADDED
return "register";
} else {
return "redirect:/" + HomeController.PAGE_NAME;
}
}
錯誤消失,但。 ..在HTML ${#fields.hasErrors('password')}
結果中的表達是錯誤的,所以我不能顯示錯誤消息給用戶。
任何想法爲什麼會發生這種行爲? 在此先感謝!
PS:我使用Spring MVC的4.1.2與2.1.4 Thymeleaf
完美的工作。非常感謝和新年快樂。 關心! –