Java 从类路径上的 jar 文件导入 Spring 属性文件
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Importing Spring properties files from jar file on classpath
提问by achingfingers
I want to import all property files, ending on .propertiesthat are contained in the src/main/resourcelocations of ALLjar-dependencies my project has.
我想导入所有属性文件，以.properties包含在我的项目具有src/main/resource的所有jar 依赖项的位置中的文件结尾。
I wrote a JUnit test, where my context.xml is located in the src/test/resources folder. I specified the property-placeholder using wildcards, but it doesn't work.
我写了一个 JUnit 测试，我的 context.xml 位于 src/test/resources 文件夹中。我使用通配符指定了属性占位符，但它不起作用。
<context:property-placeholder location="classpath*:*.properties"/>
May be I am to stupid, but I could not find a solution to my problem on the net. Does anyone here know what is the correct syntax?
可能是我太笨了，但我在网上找不到解决我的问题的方法。这里有人知道正确的语法是什么吗？
EDIT:
编辑：
The root project, has maven dependencies, that are resolved from my workspace:
根项目具有从我的工作区解析的 maven 依赖项：
And i want to import the module.properties files of the dependent projects:
我想导入依赖项目的 module.properties 文件：
采纳答案by achingfingers
From the Spring documentation:
从 Spring文档：
The " classpath*:" prefix can also be combined with a PathMatcher pattern in the rest of the location path, for example " classpath*:META-INF/*-beans.xml". [...]
“classpath*:”前缀也可以与位置路径其余部分中的 PathMatcher 模式组合，例如“classpath*:META-INF/*-beans.xml”。[...]
But there is a restriction:
但是有一个限制：
Please note that " classpath*:" when combined with Ant-style patterns will only work reliably with at least one root directory before the pattern starts, unless the actual target files reside in the file system. This means that a pattern like " classpath*:*.xml" will not retrieve files from the root of jar files but rather only from the root of expanded directories. [...]
请注意，" classpath*:" 与 Ant 样式模式结合使用时，将仅在模式启动前至少在一个根目录下可靠地工作，除非实际的目标文件驻留在文件系统中。这意味着像“classpath*:*.xml”这样的模式不会从 jar 文件的根目录检索文件，而只会从扩展目录的根目录检索文件。[...]
So if I place my module's property files in src/main/resources/META-INF, I can load of them as follows:
因此，如果我将模块的属性文件放在 src/main/resources/META-INF 中，我可以按如下方式加载它们：
<context:property-placeholder location="classpath*:/META-INF/*.properties" />
回答by user3720852
if the properties that you are using is less than 4. You can use this:
如果您使用的属性小于 4。您可以使用：
<context:property-placeholder location="classpath:test1.properties,classpath:test2.properties" />
Else use this
否则用这个
<context:property-placeholder location="classpath:*.properties" />
回答by ZaoTaoBao
You can also do it sth like this:
你也可以这样做：
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath*:your.properties</value>
<value>classpath*:your.properties</value>
.....
</list>
</property>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
</bean>
more complex example:
更复杂的例子：
<bean id="propertyPlaceholderConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="ignoreResourceNotFound" value="true" />
<property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
<property name="locations">
<list>
<value>classpath*:properties/defaults.properties</value>
<value>classpath*:properties/${props.env.name}.properties</value>
<value>classpath*:com/calciuum/config/defaults.properties</value>
<value>classpath*:com/calciuum/config/${props.env.name}.properties</value>
<value>classpath*:${props.env.classpath}/defaults.properties</value>
<value>classpath*:${props.env.classpath}/${props.env.name}.properties</value>
<value>file:${props.env.ext.properties}</value>
</list>
</property>
</bean>
