I am searching a way to check if a template exists before returning it in a view with Thymeleaf and Spring.
In my controller i was trying to do something like this:
String finalTemplate = template.getPrefix() + "/" + templateName;
try {
return finalTemplate;
} catch(TemplateInputException e) {
logger.debug("Sono qua");
return templateName;
}
but the exception is not catch...
The way you are handling exception here will not work for template exceptions.
Check below threads regarding this in issues section github.
StringTemplateResource from the comment above seems to return true in every case for thymeleaf 3.0. Here is a method to do this for classpath included templates:
public static String baseDir = "templates";
/**
* Check if a template exists in subfolder templates.
*
* @param templateName relative name of template below the basedir.
* @return true if exists, otherwise false
*/
public static boolean templateExists(final String templateName)
{
final ClassLoaderTemplateResource iTemplateResource =
new ClassLoaderTemplateResource(baseDir + "/" + templateName, "UTF8");
return iTemplateResource.exists();
}
Testcase:
@Test
public void testNonExisting()
{
assertFalse(templateExists("foo"));
}
@Test
public void testExisting()
{
assertTrue(templateExists("foo.txt"));
}
Assuming a classpath resource templates/foo.txt exists.