spring folder content resource injected in bean
I need to pass a folder (java.io.File) as a function parameter.
I tried to just declare the location of the folder, but it looks in SERVER_HOME (/home/user/tomcat).
So my next try is to inject a File (directory) which is located in WEB-INF/myFolder.
my first try failed:
<bean name="path" class="java.io.File">
<constructor-arg value="classpath:WEB-INF/myFolder" />
</bean>
But it looks for /home/user/tomcat/classpath:WEB-INF/myFolder
I've been messing around but I can't figure o开发者_C百科ut how to do it.
Any help or advice would be great.
Thank you all!
You are not supposed to access the file system from a webapp, especially not to make assumptions about the webapps own file representation. WEB-INF/myfolder
may or may not be a directory, depending if you are dealing with a WAR (no) or an exploded WAR (yes). If you absolutely need a file system resource, try to acquire it using System.getPreference("java.io.tmpdir")
.
OK, here are a few hints:
Use a Factory bean to retrieve the File. Let it
- Create a temporary directory
- Extract the contents of the jar to that temporary directory
- return the temporary directory in it's
getObject()
method
Then inject the factory bean into your bean:
<!-- This is a Factorybean that creates a file -->
<bean class="com.yourcompany.ConfigFolderCreator" id="configDir">
<property name="packageToUnpack" value="com.yourcompany.yourpackage" />
</bean>
<bean class="com.your.legacy.Api">
<!-- inject the factory bean instead of a file -->
<property name="configFolder" ref="configDir" />
</bean>
You could use spring's FileSystemResource
class
<bean id="bean" class="org.springframework.core.io.FileSystemResource">
<constructor-arg><value>your.file</value></constructor-arg>
</bean>
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