java读取自定义的.properties 配置文件 中的key

1　　/**
2     * 读取 .properties 配置文件 
3     * @param propertiesUrl 配置文件的路径
4     * @return 配置文件中的key-value值
5     */
6    public static Map<String, String> getProperties(String propertiesUrl) {
7        Map<String, String> resultMap = new HashMap<String, String>();
8        Properties prop = new Properties();
9        try {
10            // 读取属性文件a.properties
11            InputStream in = new BufferedInputStream(new FileInputStream(propertiesUrl));
12            // 加载属性列表
13            prop.load(in);
14            Iterator<String> it = prop.stringPropertyNames().iterator();
15            while (it.hasNext()) {
16                String key = it.next();
17                resultMap.put(key, prop.getProperty(key));
18                System.out.println("key: "+key+",      value: "+prop.getProperty(key));
19            }
20            in.close();
21        } catch (Exception e) {
22            System.out.println(e);
23        }
24        return resultMap;
25    }