How to define a map in a YAML file for simple POJO?

Question

I am using snakeYaml to parse certain configuration/property values to a Configuration object.

My yaml file looks like this -

#Thread
batchLimit: 1000
th         


        

Answer 1

Yaml file "AppParams.yml" with key-value pairs:

someConfig:
    key1: value1
    key2: value2

POJO:

public class ApplicationParameters {
    private Map someConfig;

    public ApplicationParameters() {
    }

    public Map getSomeConfig() {
        return someConfig;
    }

    public void setSomeConfig(Map someConfig) {
        this.someConfig = someConfig;
    }
}

Reader:

ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
File paramFile = new File("AppParams.yml");
ApplicationParameters applicationParameters = mapper.readValue(paramFile, ApplicationParameters.class);

Map someConfig = applicationParameters.getSomeConfig();

String key1Value = someConfig.get("key1");    //returns "value1"

The example above uses these dependencies in POM.xml:

 
    
        com.fasterxml.jackson.core
        jackson-core
        2.9.8
    
    
        com.fasterxml.jackson.core
        jackson-databind
        2.9.8
    
    
        com.fasterxml.jackson.dataformat
        jackson-dataformat-yaml
        2.9.8