directory separator not / but \\ in resource filtering

[Rice Yeh]

Hi,
  I have a file put in resource like the following:

<property name="hibernate.connection.url"
value="jdbc:h2:tcp://localhost/${project.build.testOutputDirectory}/db/testdb"
/>

I use resource filtering to replaceing project.build.testOutputDirectory,
but the result becomes

            <property name="hibernate.connection.url"
value="jdbc:h2:tcp://localhost/C\:\\projects\\xsf\\jdk15\\persistence\\as-automata-persistence\\target\\test-classes/db/testdb"
/>

, which is not accepted by H2 database. How do I make \\ to / ?

Regards,
Rice