java读取配置文件里的信息

@Get("Unit")
public String Unit() throws IOException {
InputStream in = new BufferedInputStream(new FileInputStream("D:/newworkSpace/myeclipse/fanyazhongxiaoxue/config/config.properties"));
ResourceBundle rb = new PropertyResourceBundle(in);
String a = rb.getString("sqlUrl");
System.out.println(a);
return "createUnit";
}