java Spring：PropertyPlaceholderConfigurer 找不到属性文件
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Spring : PropertyPlaceholderConfigurer cannot find property file
提问by ThR37
I have a strange problem with Spring using PropertyPlaceholderConfigurer. One of my beans is designed as follow :
我在使用 Spring 时遇到了一个奇怪的问题PropertyPlaceholderConfigurer。我的一个豆子设计如下：
<bean name="propertyPlaceholder" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>classpath:jdbc.properties</value>
</property>
</bean>
The problem is that spring never find jdbc.properties (FileNotFoundException). The file is in a folder named "resources" that is in the bundle classpath (I am working in a OSGi project).
问题是 spring 永远找不到 jdbc.properties( FileNotFoundException)。该文件位于包类路径中名为“resources”的文件夹中（我在 OSGi 项目中工作）。
I have tried almost every combination ("jdbc.properties", "/jdbc.properties", "classpath:jdbc.properties", "classpath:/jdbc.properties", "/resources/jdbc.properties", etc...) but it never works.
我尝试了几乎所有组合（“jdbc.properties”、“/jdbc.properties”、“classpath:jdbc.properties”、“classpath:/jdbc.properties”、“/resources/jdbc.properties”等... ) 但它永远不会奏效。
For information, if at some point, I do something like :
有关信息，如果在某个时候，我会执行以下操作：
URL u = someClassLoader.getResource("jdbc.properties");
it does work without any problem and find the file. Actually I am totally unable to understand what is the bug with spring.
它确实可以正常工作并找到文件。实际上，我完全无法理解 spring 的错误是什么。
If you have any idea to help me, thanks in advance. I am not very experienced in spring so I have maybe done a mistake somewhere.
如果您有任何想法可以帮助我，请提前致谢。我在春天不是很有经验，所以我可能在某个地方犯了错误。
[EDIT]
[编辑]
Actually, it's a problem of classloader : If I do :
实际上，这是类加载器的问题：如果我这样做：
new ClassPathResource("jdbc.properties");
it doesn't work. But :
它不起作用。但 ：
new ClassPathResource("jdbc.properties",someClassIntheBundle.class.getClassLoader());
works perfectly.
完美运行。
I do believe that Spring use the ClassLoader of its own bundle that is consumed by my bundle. Do you know a way to solve this tricky problem ?
我确实相信 Spring 使用自己的包的 ClassLoader，它被我的包消耗。你知道解决这个棘手问题的方法吗？
Thanks,
谢谢，
回答by Alexey Kutuzov
try classpath*:jdbc.properties
尝试 classpath*:jdbc.properties
回答by Ryan Ransford
IANA OSGI developer, but a quick Google search results in a linkto the Spring-osgi documentation. Look at section 5.4 and note that the spring-osgi package makes some changes to Resourceloading. It looks like the ResourceLoaderimplemented by the default ApplicationContextfor osgi will automatically pre-pend osgibundle:if no other prefix is provided.
IANA OSGI 开发人员，但在 Google 上快速搜索会找到指向Spring-osgi 文档的链接。查看 5.4 节并注意 spring-osgi 包对Resource加载进行了一些更改。如果没有提供其他前缀，osgiResourceLoader的默认实现看起来ApplicationContext会自动预先挂起osgibundle:。
It appears as though there is some difference in scope between the path searched when using classpath:and the path used when using classpath*:, but I have so far been unable to find a good explanation for it.
似乎classpath:使用时搜索的路径和使用时使用的路径之间的范围存在一些差异classpath*:，但到目前为止我无法找到一个很好的解释。
