String
key:xxx.strParam
value:abcdef(冒号后的abc为默认值)
@Value("${xxx.strParam:abc}")private String strParam;
List
key:xxx.listParam
value:202,203,214,216,230
@Value("#{'${xxx.listParam:1,2}'.split(',')}")private List<String> listParam;
Map
key:xxx.mapParam
value:{a:1,b:2,c:3}
@Value("#{${xxx.mapParam:{a:1}}}")private Map<String, Integer> mapParam;