Spring MVC Webapp：在哪里存储常见图像的路径？

发布于 2024-07-13 16:02:20 字数 423 浏览 6 评论 0原文

我正在使用 Tiles/JSP 作为视图技术构建 Spring MVC Web 应用程序。以前我将公共图像的路径存储在类 Common: 中，

 public final static String IMG_BREADCRUMBS_NEXT = "/shared/images/famfam/bullet_arrow_right.png";

然后我会在 jsp 中使用此类来获取图像 src，就像

 <img src="<%= Common.IMG_BREADCRUMBS_NEXT %>"/>

我想在 jsp 代码中删除 scriptlet 并使用 jstl 等代替一样。存储此类信息的最佳方式是什么？是资源包吗？你是怎么解决这个问题的？

原文

I'm building a Spring MVC web application with Tiles/JSP as the view technology.
Previously I stored the paths to common images in class Common:

 public final static String IMG_BREADCRUMBS_NEXT = "/shared/images/famfam/bullet_arrow_right.png";

Then I would use this class in jsp to get the image src like

 <img src="<%= Common.IMG_BREADCRUMBS_NEXT %>"/>

I would like to get rid of scriptlets in my jsp code and use jstl etc. instead.
What is the best way to store this kind of information? Is it resource bundles?
How have you solved this?

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剧终人散尽 2024-07-20 16:02:21

最终我使用Spring的主题支持来实现我想要的。
在我的视图代码中，我使用标签来获取图像文件的路径：

 <img src="<spring:theme code="theme.images.actions.edit.link"/>" />

此标签的行为与任何 < /code> 或标签，但它有自己的“消息包”。我的 applicationContext 中的必要配置是：

 <!-- 
    ========================================================= 
    Themes
    =========================================================
  -->
<bean id="themeResolver" class="org.springframework.web.servlet.theme.SessionThemeResolver">
    <property name="defaultThemeName" value="themes.default"/>
</bean>
<bean id="themeSource" class="org.springframework.ui.context.support.ResourceBundleThemeSource" />

我的应用程序的所有主题都存储在 /WEB-INF/classes/themes/ 下。默认主题属性位于 /WEB-INF/classes/themes/default.properties
它看起来像这样：

 ...
 theme.images.actions.show.link=/@contextPath@/shared/images/famfam/zoom.png
 theme.images.actions.delete.link=/@contextPath@/shared/images/famfam/cross.png
 ...

要更改应用程序的主题（和图标），我使用 ThemeChangeInterceptor （在 applicationContext 中）

<!--
========================================================= 
Theme resolving
=========================================================
--> 
<bean id="themeChangeInterceptor" class="org.springframework.web.servlet.theme.ThemeChangeInterceptor">
    <property name="paramName" value ="theme" />
</bean>

这使用户能够通过 "&theme=themes.default" 切换主题或“&theme=themes.alternative”请求参数。

我的设置的一个关键部分是主题属性文件中的 @contextPath@ 。在 Ant 构建过程中，它会被替换为开发/测试/生产环境的正确上下文路径。我的 build.xml 的关键部分是：

    <!-- copy all common themes to classes -->
    <copy todir="${build.war}/WEB-INF/classes/themes" overwrite="true" filtering="true">
        <fileset dir="resources/themes" includes="**/*.properties" />
        <filterchain>
           <replacetokens>
                <token key="contextPath" value="${setup.contextPath}"/>
            </replacetokens>
        </filterchain>
    </copy>

我希望这能为您提供 Spring Web 应用程序主题的“良好开端”。在我看来，这种设置使得改变应用程序的外观和感觉变得非常容易。

参考资料：

Spring主题： http:// /static.springframework.org/spring/docs/3.0.x/spring-framework-reference/html/ch16s07.html
FamFam 图标：http://www.famfamfam.com/lab/icons/silk/
Ant 复制任务：http://ant.apache.org/manual/Tasks/copy.html

In the end I used Spring's theme support to achieve what I wanted.
In my view code I use the <spring:theme code=""/> tag to get the path to image file:

 <img src="<spring:theme code="theme.images.actions.edit.link"/>" />

This tag behaves like any <fmt:message> or <spring:message> tag, but it has its own "message bundles". The necessary configurations in my applicationContext are:

 <!-- 
    ========================================================= 
    Themes
    =========================================================
  -->
<bean id="themeResolver" class="org.springframework.web.servlet.theme.SessionThemeResolver">
    <property name="defaultThemeName" value="themes.default"/>
</bean>
<bean id="themeSource" class="org.springframework.ui.context.support.ResourceBundleThemeSource" />

All themes of my application are stored under /WEB-INF/classes/themes/. The default theme properties are in /WEB-INF/classes/themes/default.properties
It looks like this:

 ...
 theme.images.actions.show.link=/@contextPath@/shared/images/famfam/zoom.png
 theme.images.actions.delete.link=/@contextPath@/shared/images/famfam/cross.png
 ...

To change the theme (and icons) of my app I use a ThemeChangeInterceptor (in applicationContext)

<!--
========================================================= 
Theme resolving
=========================================================
--> 
<bean id="themeChangeInterceptor" class="org.springframework.web.servlet.theme.ThemeChangeInterceptor">
    <property name="paramName" value ="theme" />
</bean>

This enables the user to switch the theme via a "&theme=themes.default" or "&theme=themes.alternative" request parameter.

One key part of my setup is the @contextPath@ in the theme properties file. This is replaced during the Ant build process with the correct context path for development/testing/production environment. The key part of my build.xml is:

    <!-- copy all common themes to classes -->
    <copy todir="${build.war}/WEB-INF/classes/themes" overwrite="true" filtering="true">
        <fileset dir="resources/themes" includes="**/*.properties" />
        <filterchain>
           <replacetokens>
                <token key="contextPath" value="${setup.contextPath}"/>
            </replacetokens>
        </filterchain>
    </copy>

I hope this gives you a "running start" on Spring web app themes. In my opinion this setup makes it quite easy to alter the look and feel of an application.

References:

Spring themes: http://static.springframework.org/spring/docs/3.0.x/spring-framework-reference/html/ch16s07.html
FamFam icons: http://www.famfamfam.com/lab/icons/silk/
Ant copy task: http://ant.apache.org/manual/Tasks/copy.html

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烟织青萝梦 2024-07-20 16:02:21

在应用程序范围内使用配置 bean，因此您可以编写类似

<img src="${configuration.imagePath}/icon.png">

我不使用 Spring 的内容，但您可能可以使用依赖项注入来执行类似于我们在 JBoss 和 Seam 中所做的操作。

基本上，我们有一个名为 Configuration 的 POJO 类，其属性是应用程序的配置参数，从 XML 配置（实际上是 JBoss MBean，但这不是主题）加载。在此示例中，我们的 bean 将有一个 getImagePath() 方法。

Seam 将负责在“应用程序”范围内实例化配置 bean 的单个实例，以便它始终可以在表达式中使用，就像上面的例子一样。

Use a configuration bean in application scope, so you can write something like

<img src="${configuration.imagePath}/icon.png">

I don't use Spring, but you can probably use dependency injection to do something similar to what we do in JBoss and Seam.

Basically, we have a POJO class called Configuration whose properties are the application's configuration parameters, loaded from an XML configuration (actually a JBoss MBean, but that's off-topic). In this example, our bean would have a getImagePath() method.

Seam will take care of instantiating a single instance of the configuration bean in 'application' scope, so that it is always available to use in expressions, like the one above.

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