How to load a resource from within a jar?

[benze]

Hi,

I have a resource file that is contained within a jar file. When I try to use classpath: to point to the resource Spring throws an error:

caused by: java.io.FileNotFoundException: class path resource [fwl/localization/ssh_key_tx3.private] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/opt/tomcat/apache-tomcat-7.0.14/webapps/fwl/WEB-INF/lib/java-1.0-SNAPSHOT.jar!/fwl/localization/ssh_key_tx3.private

But when I look in the java-1.0-SNAPSHOT.jar file, the file is present (fwl/localization/ssh_key_tx3.private).

A little quick search found me this link with someone who is having a similar problem, but with no response.
http://forum.springsource.org/showth...exploded-wars)

Is there any mechanism in Spring that will allow me to load a resource file from within a jar file?

Thanks,

Eric

[Javaid Bolaky]

Hi Eric,

Importing a xml file from a jar file works for me.

Did you do

<import resource="classpath:/fwl/localization/ssh_key_tx3.private" />

by any chance?

try specifying classpath:

by doing this, spring should find the file in classpath ...

Please paste the part where u r importing that .private file.

Thanks
Javaid

[pminearo]

I have found that using the import only allows for 1 JAR file to have that path. For Example:

SubModule1.jar
/META-INF/spring/test/module1-context.xml

SubModule2.jar
/META-INF/spring/test/module2-context.xml

MainModule.jar
/applicationContext
<import resource="classpath:/META-INF/spring/test/**/*.xml"/>

It looks like Spring finds the first JAR file in the Classpath that contains the path '/META-INF/spring/test' and used it. Spring will then ignore any other JAR file in the Classpath afterwards.

Is there a way to ensure Spring will search all JAR files and directories for the specified path?

[pminearo]

Ahhh...figured it out....

<import resource="classpath*:/META-INF/test/**/*.xml"/>

[benze]

Hi Eric,

Importing a xml file from a jar file works for me.

Did you do

<import resource="classpath:/fwl/localization/ssh_key_tx3.private" />

by any chance?

try specifying classpath:

Sorry for the delay in my response. I'm not importing it as a resource as such as the object is expecting a resource name as a parameter, and it in turn is loading the resource:

	<bean id="sftpSessionFactory"
		class="org.springframework.integration.sftp.session.DefaultSftpSessionFactory">
		<property name="host" value="localhost" />
 		<property name="privateKey"	value="classpath:fwl/localization/ssh_key_tx3.private" /> 
		<property name="port" value="22" />
		<property name="user" value="fwl" />
	</bean>

DefaultSftpSessionFactory then does the following:

String prvfile = this.privateKey.getFile().getAbsolutePath()

which it then tries to read as:

      file=new File(prvfile);
      fis=new FileInputStream(prvfile);

And then throws an error that the file cannot be found.

Any thoughts?

Tx,

Eric

[turquhart]

I had this issue also. The DefaultSftpSessionFactory is adding an Identity using a method that requires a path to the private key:

addIdentity(String prvkey, String passphrase)

There is another method that could be used, one which allows the Identity to be passed in as a byte array:

public void addIdentity(String name, byte[]prvkey, byte[]pubkey, byte[] passphrase)

In the end I created my own FtpSessionFactory that used this method loading a byte array from an InputStream (which can be created from a resource inside a jar). However if I wanted to use the Spring SftpSession object, I would have to put my FtpSessionFactory inside a org.springframework.integration.sftp.session package as the class is package scoped. I don't really want to do that so I'm looking at some other options now.