I want to read spring properties file that has a map of maps

Question

I want to have a property like below that is a map of maps

propertymap = {
    key1:'{subkey1:'subvalue1',subkey2:'subvalue2'}',
    key2:'{subkey3:'subvalue3',subkey4:'subvalue4'}' }

@Value("#{${propertymap}}")  
private Map<String,Map<String,String>> propertymap;

used code like above in my config class but got error. please let me know if there is a way to do this.

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.Map  nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.expression.spel.SpelParseException: EL1043E:(pos 17): Unexpected token. Expected 'rcurly(})' but was 'identifier'
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)

Answer 1

I found the way, I had to just remove the ' after the key

propertymap = {  
   key1:{  
      subkey1:'subvalue1',
      subkey2:'subvalue2'
   },
   key2:{  
      subkey3:'subvalue3',
      subkey4:'subvalue4'
   }
}

and below code picks it up

@Value("#{${propertymap}}")  
private Map<String,Map<String,String>> propertymap;