静态资源的URI中的上下文路径，我真的需要指定它吗？ [英] Context path in URIs of static resources, do I really need to specify it?

问题描述

我有一个简单的网络应用

  webapp 
静态
图片
  -  a .gif 
 pages 
  -  test.html 
 WEB-INF 
 pages 
  -  test.jsp 
   
 
 
，
 < img src = /static/images/a.gif\"/> 
  
问题是图像不会显示，直到我将uri更改为
 < img src =/ web app name / static / images / a.gif/> 
  
但我在URI上加载test.html 
  http：// server / web app name / static / pages / test.html 
  
我在web.xml中配置了静态资源映射，如下所示。
 < servlet> 
< servlet-name> springWeb< / servlet-name> 
< servlet-class> org.springframework.web.servlet.DispatcherServlet< / servlet-class> 
< init-param> 
< param-name> contextConfigLocation< / param-name> 
< param-value> classpath：applicationContext-web.xml< / param-value> 
< / init-param> 
< load-on-startup> 1< / load-on-startup> 
< / servlet> 
 
< servlet-mapping> 
< servlet-name> springWeb< / servlet-name> 
< url-pattern> /< / url-pattern> 
< / servlet-mapping> 
 
< servlet> 
< servlet-name> resourceServlet< / servlet-name> 
< servlet-class> org.springframework.js.resource.ResourceServlet< / servlet-class> 
< load-on-startup> 1< / load-on-startup> 
< / servlet> 
 
< servlet-mapping> 
< servlet-name> resourceServlet< / servlet-name> 
< url-pattern> / static / *< / url-pattern> 
< / servlet-mapping> 
  
我错过了什么吗？我确实希望在DEV阶段将这些静态资源保留在应用程序中，而不是将它们移动到HTTP服务器。
 
 
 
非常感谢。
解决方案
出于这个原因，最好使用spring：url标记或JSTL c：url标记来包装HTML中的URL。这些标签会自动添加上下文路径。
 
 
 
例如：
 < img src =< spring：url value ='/ static / images / a.gif'/>/> 
  
或者，您可以在开发中使用的上下文路径。那样你的网址就会与生产相匹配。对于每个servlet容器，这样做的方式是不同的 - 例如对于Tomcat，您可以将应用程序部署到webapps / ROOT。
 
I have a simple web app
webapp
   static
       images
            - a.gif
       pages
            - test.html
   WEB-INF
       pages
            - test.jsp
in test.html, there is 
<img src="/static/images/a.gif"/>
the problem is that the image is not displaying until I change the uri to 
<img src="/web app name/static/images/a.gif"/>
but I'm loading test.html at URI 
http://server/web app name/static/pages/test.html
I configured static resources mapping in my web.xml as follows.
<servlet>
    <servlet-name>springWeb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext-web.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>springWeb</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<servlet>
    <servlet-name>resourceServlet</servlet-name>
    <servlet-class>org.springframework.js.resource.ResourceServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>resourceServlet</servlet-name>
    <url-pattern>/static/*</url-pattern>
</servlet-mapping>
Am I missing anything? I do want to keep those static resources within the app in DEV phase instead of moving them to a HTTP server.

Thanks a lot.
解决方案
It's good practice to use either the spring:url tag or the JSTL c:url tag to wrap URLs in your HTML for this very reason.   Those tags will automatically add the context path.

For example: 
<img src="<spring:url value='/static/images/a.gif'/>"/>
Alternatively you can use a context path of "" in development.  That way your urls would match production.  The way this is done is different for each servlet container - for example for Tomcat you would deploy your app to webapps/ROOT.

                        
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