读取properties文件

    private static String driver;   
    private static String url;   
    private static String username;
    private static String password;
    private static int batchno;
    //初始化，綁定properties中的jdbc屬性值
    static {   
        Properties prop = new Properties();   
        InputStream in = jdbcUtil.class.getResourceAsStream("/application.properties");
        try {   
            prop.load(in);   
            driver = prop.getProperty("spring.datasource.driver-class-name").trim();   
            url = prop.getProperty("spring.datasource.url").trim();
            username = prop.getProperty("spring.datasource.username").trim();
            password = prop.getProperty("spring.datasource.password").trim();
            batchno = Integer.parseInt(prop.getProperty("spring.datasource.batchno").trim());

        } catch (IOException e) {   
            e.printStackTrace();   
        } 
    }