java读取配置文件

现今的程序都要求能够读写配置文件，使得程序的配置信息能够很方便地修改。

读取配置文件通常使用property文件，下面列举了从hadoop的hdfs和本地的文件系统读取配置的例子。

话不多说，上代码：

//读取hdfs配置文件
		public static Properties getPropertiesFromHDFS(String path){
	    	Properties prop = new Properties();
			Configuration conf = new Configuration();
			FSDataInputStream hdfsInStream = null;
	    //		String path = "hdfs:///user/hdfs/redis.cfg";
	    //		String path = "c:\\hadoop\redis.cfg";
			try {
				FileSystem fs = FileSystem.get(URI.create(path), conf);
				hdfsInStream = fs.open(new Path(path));
			} catch (IOException e2) {
				// TODO Auto-generated catch block
				e2.printStackTrace();
			}
			InputStreamReader read = null;
			try {
				read = new InputStreamReader(hdfsInStream, "utf-8");
			} catch (UnsupportedEncodingException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			try {
				prop.load(read);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
	    	return prop;
	    }

下面是从本地读取：

public static Properties getPropertiesFromLocal(String path) {
			Properties prop = new Properties();
			FileInputStream fis = null;
			try {
				File f = new File(path);
				fis = new FileInputStream(f);
				prop.load(fis);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} finally {
				if (null != fis) {
					try {
						fis.close();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
			return prop;
		}