Java getResourceAsStream problem

There was a problem with the project using the getResourceAsStream() method:

The property file has been changed while the project is running, but the file read using the getResourceAsStream() method has not changed, which is the same as when the server was originally started. Checked on the Internet, some people say that the getResourceAsStream () method will be cached by the java virtual machine after reading the new file, and when the getResourceAsStream () method is called again, it will first find whether there is this file in the java virtual machine, if there is, then directly return If not, it will get the file according to the incoming name.

Start the code I wrote:

    final Properties prop = new Properties();
    
    Property(String file){
        
        try {
            prop.load(this.getClass().getResourceAsStream(file));
        } catch (FileNotFoundException e) {
            e.printStackTrace(System.err);
        } catch (IOException e) {
            e.printStackTrace(System.err);
        }
    }

Changed code:

    final Properties prop = new Properties();
    
    Property(String file){
        
        try {
            prop.load(new FileInputStream(this.getClass().getResource(file).getFile()));
            
        } catch (FileNotFoundException e) {
            e.printStackTrace(System.err);
        } catch (IOException e) {
            e.printStackTrace(System.err);
        }
    }

This way, there will be no caching issues.

Need to explain is that I am a java web project, so I need to passThis.getClass().getResource(file).getFile() code to get the path.

The file name parameter file passed in can be a path such as "/binessID.properties".

Add "/" to find the file from the classpath, without adding "/" is to find from the current class class directory.

This can be referenced

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