Spring Boot YAML configuration for lists (or arrays) of strings

application-properties.yaml

# For a property in a Spring component like this:
#
# @Value("${property.name}")
# private List<String> values;
#
# Spring will fail to start up with a vague error saying something like
# "Could not resolve placeholder 'property.name' in value "${property.name}"
# even though the property definition is right there in the yaml file

# For example, ordinarily in a yaml file something like this:

property:
  name:
    - value1
    - value2
    
 # You must use different syntax (note the use of comma):
 
 property:
   name: >
     value1,
     value2

# In fact, the > is not actually required, so this works (again note the comma):

property:
   name:
     value1,
     value2

# Or:

property:
  name: value1, value2