Incorrect usage of application property in FreeMarkerTemplateAvailabilityProvider leads to issues with user supplied error views

[tvirtualw]

org.springframework.boot.autoconfigure.freemarker.FreeMarkerTemplateAvailabilityProvider#isTemplateAvailable in 1.3.0.M5 uses

String loaderPath = environment.getProperty("spring.freemarker.path", FreeMarkerProperties.DEFAULT_TEMPLATE_LOADER_PATH);

Instead it should use spring.freemarker.template-loader-path as per the Spring Boot documentation.

When using a non-default location for Freemarker templates, it is not possible to simply add a custom error view to replace the whitelabel error page. Adding error.ftl to the template directory should suffice. However, due to the bug, it cannot be loaded because the system always looks in the default classpath:/templates/ location and does not find it.

[philwebb]

VelocityTemplateAvailabilityProvider suffers a similar problem in that the relaxed form is not considered.