我可以在 JAVA 的属性文件中使用正则表达式吗？

Question

I am trying to assert some text that is stored in properties file:

Text=\
some text\n\
to be\n\
asserted\n\
based on 1567 ratings

1567 vary so I want to make sure that it get's replaced with regex that will say that this can be any number using \\d or \\d, since I have to escape \\ in properties file.

So I tried using

Text=\
some text\n\
to be\n\
asserted\n\
based on \\d ratings

this is the method I am using to assert:

Assert.assertEquals(PropertyLoader.loadProperty("filename.properties", "Text"),actual);

actual is a WebElement that gives me the text from website, I use actual.getText()

This is the class that has a loadProperty method

class PropertyLoader {
    static String loadProperty(String file, String name) {
        Properties props = new Properties();
        try {
           props.load(getResourceAsStream(file));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return props.getProperty(name);
    }
}

End result is that i am getting

Comparison Failure:

Expected:
    some text
    to be
    asserted
    based on \d ratings

Actual:
    some text
    to be
    asserted
    based on 1567 ratings

Not sure if this is even possible or I am simply missing something?

Answer 1

First the content of your properties file should be:

Text=\
some text\n\
to be\n\
asserted\n\
based on \\d+ ratings

Then your test case will be:

Assert.assertTrue(
    Pattern.compile(
        PropertyLoader.loadProperty("filename.properties", "Text"),  
        Pattern.MULTILINE
    ).matcher(actual).matches()
);