如何使用映射器將自定義查詢字符串附加到grails資源？

Question

我想創建一個將查詢字符串附加到actualUrl的Grails資源映射器。迄今爲止所有的嘗試都失敗了 - 但也許我會以錯誤的方式去做事。示例代碼如下;

import org.grails.plugin.resource.mapper.MapperPhase 
import org.apache.commons.logging.LogFactory 

class GlobalizationResourceMapper { 

    def log = LogFactory.getLog(this.class) 
    def phase = MapperPhase.RENAMING 
    def operation = "globalizationquerystring" 
    def priority = -1 

    static defaultExcludes = ['**/*.png', '**/*.gif', '**/*.jpg', '**/*.jpeg', '**/*.gz', '**/*.zip'] 
    static defaultIncludes = ['**/*.js','**/*.gsp'] 

    /** 
    * Cache the resource based on current language in use. Do this by appending a query string on the resource URL indicating language. 
    */ 
    def map(resource, config) { 
     def query = [l:'en_US'] 
     resource.actualUrl = resource.actualUrl + '?' + query.collect { it }.join('&') 
     if (log.debugEnabled) log.debug "Modified URL: ${resource.actualUrl}" 
     log.info "Modified URL: ${resource.actualUrl}" 
    } 
} 

實際的URL得到了適當的修改，但是請求的任何資源都以重定向循環和404結束。

Answer 1

可以使用追加PARAMS到URL中*Resources.groovy即在其中資源聲明（而不是在映射）點：

resource url: '/js/foo.js', wrapper: { baseUrl ->   
    def query = [l:'en_US'] 
    baseUrl + '?' + query.collect { it }.join('&') 
}