public class App {
//Map collection that stores configuration properties
public static Map<String, Object> conf = new HashMap<String, Object>();
public static void main(String[] args) throws IOException {
//Get configuration file path from classpath
URL url = App.class.getResource("/");
Yaml yaml = new Yaml();
//Convert the input stream of the configuration file into the map original map object through the yaml object
Map map = yaml.loadAs(new FileInputStream(url.getPath()), Map.class);
//Recursive map object loads configuration into conf object
loadRecursion(map, "");
System.out.println(conf.get("mysql.database1.table1"));
}
//Recursively parse map object
public static void loadRecursion(Map<String, Object> map, String key){
map.forEach((k,v) -> {
if(isParent(v)){
Map<String, Object> nextValue = (Map<String, Object>) v;
loadRecursion(nextValue, (("".equals(key) ? "" : key + ".")+ k));
}else{
conf.put(key+"."+k,v);
}
});
}
//Judge whether there are still children
public static boolean isParent(Object o){
if (!(o instanceof String || o instanceof Character || o instanceof Byte)) {
try {
Number n = (Number) o;
} catch (Exception e) {
return true;
}
}
return false;
}
}
