<context:property-placeholder location="classpath:some.properties" ignore-unresolvable="true"/>

@Value("${myProperty}")
private String myString;

@Value("${myProperty.two}")
private String myStringTwo;

myProperty = whatever
myProperty.two = something else\
that consists of multiline string

@Configuration
@PropertySource(value="classpath:some.properties")
public class SomeService {