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我們必須在頁面上進行驗證,在空字段顯示消息的情況下。 這是我的課,控制器的方法和消息的設置。 我無法登上頁面Freemarker顯示錯誤信息。驗證和Freemarker
public class CreateCourseDTO {
@NotEmpty
private String name;
@NotEmpty
private String category;
@NotEmpty
private String description;
@NotEmpty
private String links;
public CreateCourseDTO() {
}
NotEmpty.createCourseDTO.name = Name is required!
NotEmpty.createCourseDTO.category = Category is required!
NotEmpty.createCourseDTO.description = Description is required!
NotEmpty.createCourseDTO.links = Links is required!
<bean class="org.springframework.context.support.ResourceBundleMessageSource"
id="messageSource">
<property name="basename" value="messages" />
</bean>
@RequestMapping(value = "/create", method = RequestMethod.POST, params = {
"name", "category", "description", "links" })
public String createCoursePost(Model model, HttpSession session,
HttpServletRequest request, @Valid CreateCourseDTO createCourseDTO,
BindingResult result) {
model.addAttribute("eMail", session.getAttribute("eMail"));
String title = request.getParameter("name");
String description = request.getParameter("description");
String links = request.getParameter("links");
String category = request.getParameter("category");
if (result.hasErrors()) {
如何修復freemarker頁面?
<#import "/spring.ftl" as spring />
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<link rel="stylesheet" type="text/css" href="./css/style.css"/>
<style>
.error {
color: #ff0000;
}
.errorblock {
color: #000;
background-color: #ffEEEE;
border: 3px solid #ff0000;
padding: 8px;
margin: 16px;
}
</style>
</head>
<body>
<div class="container">
<header>
<h1>
Create Course
<div class="logout">
<span id="currentUserLogin">
${eMail}
</span>
<a href="logout.html">
<i class="icon-off"></i>
</a>
</div>
</h1>
</header>
<form class="form-horizontal" commandName="createCourseDTO" method=POST>
<fieldset>
<div class="control-group">
<label class="control-label">Name</label>
<div class="controls">
<input id="name" name="name" class="span5" type="text"/>
<@spring.showErrors "<br>" />
</div>
</div>
<div class="control-group">
<label class="control-label">Category</label>
<div class="controls">
<select id="category" name="category" class="span5">
<option></option>
<#list listCategories as category>
<option>${category.category}</option>
</#list>
</select>
<@spring.showErrors "<br>" />
</div>
</div>
<div class="control-group">
<label class="control-label">Description</label>
<div class="controls">
<textarea id="description" name="description" class="span5" rows="3"></textarea>
<@spring.showErrors "<br>" />
</div>
</div>
<div class="control-group">
<label class="control-label">Links</label>
<div class="controls">
<textarea id="links" name="links" class="span5" rows="3"></textarea>
<@spring.showErrors "<br>" />
</div>
</div>
<div class="form-actions">
<button id="createButton" name="createButton" class="btn btn-primary" type="submit">Create</button>
</div>
</fieldset>
</form>
<a class="btn" href="courses.html">Cancel</a>
</div>