Grails过滤器与静态资源？ [英] Grails filters with static resources?

问题描述

我正在将老派的Java过滤器转换为Grails过滤器。 （过滤器正在记录对特定静态图像的访问。）

问题是，我无法启动它！ Grails支持静态资源之前的过滤器吗？

  class EmailImageFilters {
 def filters = {
 emailFilter（uri：'/ images / **'）{
 log.infoemail filter $ {new Date（）}
 before = {
 return true ; 
 
 
 
 
 
 
 I我使用的是UIPerformance插件，但在开发模式下没有打开。
 
 
 
 Grails 1.3.5 
 
 
 
 I可以在以下情况下触发： 
 
 
  emailFilter（controller：'*'，action：'*'）{
  
但是我需要通过静态资源;例如/ images 
 
 
 
建议？  
 
解决方案
静态资源不是由控制器提供的，所以Grails过滤器（它们是Spring控制器拦截器的包装器）为他们的请求火。您需要在web.xml中注册一个servlet过滤器来处理静态资源。
 $ b 在src / java或者src / groovy中创建一个实现 javax.servlet.Filter ，然后运行 grails install-templates 并编辑 src / templates / war / web.xml 来注册它，就像
 < filter> 
< filter-name> myFilter< / filter-name> 
< filter-class> com.mycompany.myapp.MyFilter< / filter-class> 
< / filter> 
 
< filter-mapping> 
< filter-name> myFilter< / filter-name> 
< url-pattern> / *< / url-pattern> 
< / filter-mapping> 
  
更改url-pattern的值，如果您不希望为所有请求。
 
I'm converting an old school Java filter to a Grails filter. (The filter is recording access to particular static image.)

The problem is, I can't get it fire! Does Grails support filters in front of static resources?
class EmailImageFilters {
    def filters = {
        emailFilter(uri: '/images/**') {
            log.info "email filter ${new Date()}"
            before = {
                return true;
            }
        }
    } 
}
I am using the UIPerformance plugin, but it's not turned on in development mode.

Grails 1.3.5

I can get it to fire when:
emailFilter(controller: '*', action: '*') {
but I need it to be through static resources; e.g. /images

Suggestions? 
解决方案
Static resources aren't served by a controller, so Grails filters (which are wrappers for Spring controller interceptors) won't fire for requests for them. You need to register a servlet filter in web.xml to process static resources.

Create a class in src/java or src/groovy that implements javax.servlet.Filter, then run grails install-templates and edit src/templates/war/web.xml to register it, something like
<filter>
   <filter-name>myFilter</filter-name>
   <filter-class>com.mycompany.myapp.MyFilter</filter-class>
</filter>

<filter-mapping>
   <filter-name>myFilter</filter-name>
   <url-pattern>/*</url-pattern>
</filter-mapping>
Change the value of url-pattern to be more specific if you don't want it to fire for all requests.

                        
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