读properties文件

太无聊了，写个读properties文件的类方便以后直接copy

private String fileName;
	private Properties properties;
	private FileInputStream inputFile;
	private String filePath;

	// Constructor
	public ProUtil() {
		this.properties = new Properties();
	}

	// get path of property file
	public String getConfigPath() {
		String strClassName = getClass().getName();
		String strPackageName = "";
		if (getClass().getPackage() != null) {
			strPackageName = getClass().getPackage().getName();
		}
		String strClassFileName = "";
		if (!"".equals(strPackageName)) {
			strClassFileName = strClassName.substring(
					strPackageName.length() + 1, strClassName.length());
		} else {
			strClassFileName = strClassName;
		}
		URL url = null;
		url = getClass().getResource(strClassFileName + ".class");
		String strURL = url.toString();
		try {
			strURL = java.net.URLDecoder.decode(strURL, "UTF-8");
			System.out.println("strURL  :  " + strURL);
		} catch (Exception ex) {
			ex.printStackTrace();
		}
		strURL = strURL.substring(strURL.indexOf('/') + 1,
				strURL.lastIndexOf('/') + 1);
		return strURL;
	}

	// file configuration
	private void initFileConfig() {
		try {
			filePath = this.getConfigPath();
			filePath += fileName;
			System.out.println("filePath is : " + filePath);
			inputFile = new FileInputStream(filePath);
			properties.load(inputFile);
			inputFile.close();
		} catch (FileNotFoundException e) {
			System.out.println("配置文件路径错误");
		} catch (IOException e) {
			System.out.println("配置文件度取失败");
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	// read Value by key from input parameter "fileName"
	public String readValueByKey(String fileName, String key) {
		try {
			String value = "";
			this.fileName = fileName;
			initFileConfig();
			if (properties.containsKey(key)) {
				value = properties.getProperty(key);
				return value;
			} else
				return value;
		} catch (Exception ex) {
			ex.printStackTrace();
			return "";
		}
	}

	// read all info from property file
	public String readAllValues(String fileName) {

		try {
			@SuppressWarnings("rawtypes")
			Enumeration en = properties.propertyNames();
			while (en.hasMoreElements()) {
				String key = (String) en.nextElement();
				String value = properties.getProperty(key);
				System.out.println("Key is : " + key + "  Value is : " + value);
			}
		} catch (Exception ex) {
			ex.printStackTrace();
			return "";
		}
		return null;
	}

	// read Value by key
	// public String getValue(String key) {
	// if (propertie.containsKey(key)) {
	// String value = propertie.getProperty(key);
	// return value;
	// } else {
	// return "";
	// }
	// }
	//test
	public static void main(String[] args) {
		ProUtil property = new ProUtil();
		System.out.println(property.readValueByKey("xxx.properties",
				"a"));
		System.out.println(property.readAllValues("xxx.properties"));
	}