Java中yml、properties配置文件读取方式

1、properties配置文件读取

 1 public class PropertyUtil {
 2     private static String RESOURCE_NAME = "conf/sys.properties";
 3     private static Properties properties;
 4 
 5     static {
 6         try {
 7             properties = PropertiesLoaderUtils.loadAllProperties(RESOURCE_NAME);
 8         } catch (IOException e) {
 9         }
10     }
11 
12     public static String getValue(String key) {
13         return properties.getProperty(key);
14     }
15 }

2、yml配置文件读取

 1 public class YamlUtil {
 2 
 3     public static final YamlUtil instance = new YamlUtil();
 4     private static Map<String, Map<String, Object>> ymlMap = new HashMap<>();
 5 
 6     static {
 7         Yaml yaml = new Yaml();
 8         try (InputStream in = YamlUtil.class.getClassLoader().getResourceAsStream("application.yml");) {
 9             ymlMap = yaml.loadAs(in, HashMap.class);
10         } catch (Exception e) {
11         }
12     }
13 
20     public String getValue(String key) {
21         String separator = ".";
22         String[] separatorKeys = null;
23         if (key.contains(separator)) {
24             separatorKeys = key.split("\\.");
25         } else {
26             return ymlMap.get(key).toString();
27         }
28         Map<String, Map<String, Object>> finalValue = new HashMap<>();
29         for (int i = 0; i < separatorKeys.length - 1; i++) {
30             if (i == 0) {
31                 finalValue = (Map) ymlMap.get(separatorKeys[i]);
32                 continue;
33             }
34             if (finalValue == null) {
35                 break;
36             }
37             finalValue = (Map) finalValue.get(separatorKeys[i]);
38         }
39         return finalValue == null ? null : finalValue.get(separatorKeys[separatorKeys.length - 1]).toString();
40     }
41 }