Java 读取指定路径下properties 配置文件。

 public static Properties getProperties(final 
    String filePath) throws IOException {
        Properties pps = new Properties();
        File propertiesFile = new File(filePath);
        try (InputStream in = new FileInputStream(propertiesFile);
                InputStreamReader ir = new InputStreamReader(in, CountConstants.UTF_8);
                BufferedReader reader = new BufferedReader(ir);) {
            pps.load(reader);
        } catch (FileNotFoundException e) {
            throw new 
 FileNotFoundException("properties file does not exist, file path: " + filePath);
        }
         return pps;
    }

获取某个值
pps.getProperty(key);