[FIXED] yamlMapper.readValue concatenate value with next attribute name causing InvaidFormatException

Issue

I have this method that maps a yaml configuration file to a class , but the mapping apparently is not OK, as shown in the bellow image, instead of mapping 60 to the default attribute it concatenates the next attribute name which causes an exception as default is an int and the retrieved value is a string. Does anyone have any clue about why this is happening?

I tried adding a \n after 60 to force a line break without success. ( it was working fine until I updated the file , changed 30 to 60 in defaultLangId ).

The Yaml file content :

defaultLangId : 60
  - code: AR
    label: ar
last-result-index : 120

My config calss :

@Getter
@Setter
public class XXXXXConfiguration {
    private int defaultLangId;
    private List<CodeLabel> cities;
    private int lastResultIndex;

}

Solution

The line after 60 is more indented. This causes YAML to read it as continuation of the scalar 60, resulting in 60 - code (for - to be considered a sequence item indicator, it must not be inside a scalar). Only when : is encountered, the value is finalized because : can end a scalar.

Your class indicates that you want to give a sequence that is to be loaded into the field cities; you need to give the key cities in your YAML for that:

defaultLangId : 60
cities:
  - code: AR
    label: ar
last-result-index : 120

Answered By - flyx