使用getResourceAsStream（）方法从远程位置读取属性文件

Question

Can I use the below code to read a propery file from a remote location in internet?

InputStream is = getClass().getResourceAsStream("/filename.properties");
Properties pro = new Properties();
pro.load(is);
// ...

Can I replace the /filename.properties in to a remote path like 192.168.173.238/D:/war/filename.properties ? If yes, how should I specify the path? This code is running in Apache Tomcat.

Answer 1

If it's available by an URL (like as you would enter in your webbrowser's address bar), use URL#openStream() or URLConnection#getInputStream() .

InputStream is = new URL(url).openStream();

If it's available by a local disk file system path (like as you would enter in your disk explorer's address bar), use FileInputStream .

InputStream is = new FileInputStream(path);

Simple as that.

Your next question shall probably be, "What's the right URL or disk file system path?" . This can't be answered based on the information provided so far.

Answer 2

Hi Can I use the below code to read a propery file from a remote location in internet.

Probably not. You can only use it to read a property file that is available on the CLASSPATH. Unless you are using something like the RMI codebase feature, or URLClassLoaders, your CLASSPATH does not include network locations.

You don't seem to understand what getResourceAsStream() is actually for.