来自classpath的Groovy资源未加载 [英] Groovy resource from classpath not loaded

问题描述

大家好.

我正在使用spock框架在我的groovy项目中进行测试(IDE-Intellij Idea 12.6).我的spock规范类将文件名传递给groovy对象进行处理(该文件肯定在classpath中)，但是当我尝试以这种方式获取该文件时

  def资源= getClass().getClassloader().getResourceAsStream(文件路径)assert resource！= null:未找到路径$ {filepath}的输入流"def rootNode =新的XmlParser().parse(资源) 

然后 resource == null .

我尝试调试，并且在Expression Evaluation窗口中，此代码 getClass().getResource(fileName)返回资源.

我试图检查哪种情况的类加载器在第一种情况下(在带有代码的类中)和第二种情况下(表达式评估"窗口)使用.

在第一种情况下，类加载器是 sun.misc.Launcher$AppClassLoader@18dabf1 ，但是在表达式评估窗口中，类加载器是 groovy.lang.GroovyClassLoader$InnerLoader@1e69757 这就是我的资源为空的原因.

有人可以指导我做错什么以及如何加载该资源文件吗?

更新:

更改了解析资源文件的方式.当 filepath -文件的完整路径有效时，但是如果 filepath 只是文件名，而该文件位于classpath中，则 resource == null

UPDATE2 :

改变资源文件的加载方式，清理依赖项，一切都正常了，我想昨天不是我的日子.

解决方案

问题很可能与Spock无关.很难说是什么原因造成的，但是读取资源最安全的方法是 getClass().getClassLoader().getResourceAsStream()或 Thread.currentThread().getContextClassLoader().getResourceAsStream()，具体取决于环境.

不确定执行新文件(资源)时Groovy会做什么，因为没有 File(URL)构造函数(只有 File(URI))构造函数).无论如何，应尽可能避免从类路径获取 File .

Good day everyone.

I am using spock framework for testing in my groovy project(IDE - Intellij Idea 12.6). My spock specification class pass filename to groovy object for processing (that file is in classpath for sure), but when i try to get that file this way

    def resource = getClass().getClassloader().getResourceAsStream(filepath)
    assert resource != null : "No input stream found for path ${filepath}"
    def rootNode = new XmlParser().parse(resource)

Then resource == null.

I tried debugging and in Expression Evaluation windows this code getClass().getResource(fileName) returns resource.

I tried to check which classloader used in first case (in class with the code) and in second case (Expression Evaluation window).

In first case classloader was sun.misc.Launcher$AppClassLoader@18dabf1, but in Expression Evaluation window classloader was groovy.lang.GroovyClassLoader$InnerLoader@1e69757 I suppose that's the reason my resource was null.

Can someone guide me about what I am doing wrong and how can I load that resource file ?

UPDATE:

Changed the way resource file was parsed. When filepath - full path to file this works, but if filepath is just file name and that file in classpath then resource == null

UPDATE2:

Change the way resource file loaded, clean up dependencies bit and all is working, I guess yesterday just wasn't my day.

解决方案

The problem is very likely unrelated to Spock. It's hard to say from a distance what's causing it, but the safest way to read a resource is getClass().getClassLoader().getResourceAsStream() or Thread.currentThread().getContextClassLoader().getResourceAsStream(), depending on the environment.

Not sure what Groovy does when you do new File(resource), as there is no File(URL) constructor (only a File(URI) constructor). In any case, getting a File from a class path should be avoided whenever possible.

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