如何在 Spring MVC 3.0 中显示格式化的 DateTime? [英] How to display a formatted DateTime in Spring MVC 3.0?
问题描述
我的模型中有一个 Joda-DateTime 字段,并希望以 JSP 视图的格式显示它.我已经用新的@DateTimeFormat 注释对其进行了注释:
I have a Joda-DateTime field in my model and want to display it formatted in a JSP view. I have annotated it with the new @DateTimeFormat annotation:
public class Customer {
private DateTime dateOfBirth;
@DateTimeFormat(style="M-")
public DateTime getDateOfBirth() {
return dateOfBirth;
}
}
现在我想在我的 JSP 中显示 dateOfBirth:
Now I want to display the dateOfBirth in my JSP:
Date of birth: ${customer.dateOfBirth}
但是结果是未格式化的:
But the result is unformatted:
Date of birth: 2010-08-11T11:23:30.148+02:00
经过一番研究,我发现我必须使用 spring:bind-tag:
After some research I found out, that I have to use the spring:bind-tag:
<spring:bind path="customer.dateOfBirth">
Date of birth: ${status.value}
</spring:bind>
有了这个就可以了.但是对于这个简单的任务来说似乎太复杂了.而且在列表上使用这种方法更加复杂,因为您必须将列表索引集成到绑定路径中.
With this it works. But it seems too complicated for this simple task. And using this method on lists is even more complicated since you have to integrate the list-index into the binding-path.
所以我的问题是:有没有更简单的方法来使用 spring 格式化注释显示格式化值?
So my question is: Is there a simpler way to display a formatted value using the spring formatting-annotations?
推荐答案
使用理解 @DateTimeFormat
规则的 spring:eval
标签:
Use the spring:eval
tag which understands the @DateTimeFormat
rule:
<spring:eval expression="customer.dateOfBirth" />
或者,您可以完全从模型中删除 @DateTimeFormat
规则,并使用 Joda 的 formatDate 标签,如 Naikus 所示.
Alternatively, you can remove the @DateTimeFormat
rule from your model all-together and use Joda's formatDate tag as Naikus illustrates.
在未来的版本中,Spring 计划支持插入SpEL",这是 spring:eval 调用的Spring 表达式语言",作为 JSP 页面的默认统一 EL 实现.这将允许像 ${customer.dateOfBirth}
这样的内联表达式也可以通过 SpEL 进行路由.您可以在此处投票支持此增强请求:https://jira.spring.io/browse/SPR-7459.
In a future release, Spring plans to support plugging in "SpEL", which is the "Spring Expression Language" invoked by spring:eval, as the default Unified EL implementation for your JSP pages. This would allow in-line expressions like ${customer.dateOfBirth}
to be routed through SpEL as well. You can vote up this enhancement request here: https://jira.spring.io/browse/SPR-7459.
这篇关于如何在 Spring MVC 3.0 中显示格式化的 DateTime?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!