Match path string using glob in Java

问题

I have following string as a glob rule:

**/*.txt

And test data:

/foo/bar.txt
/foo/buz.jpg
/foo/oof/text.txt

Is it possible to use glob rule (without converting glob to regex) to match test data and return valud entries ?

One requirement: Java 1.6

回答1:

If you have Java 7 can use FileSystem.getPathMatcher:

final PathMatcher matcher = FileSystem.getPathMatcher("glob:**/*.txt");

This will require converting your strings into instances of Path:

final Path myPath = Paths.get("/foo/bar.txt");

For earlier versions of Java you might get some mileage out of Apache Commons' WildcardFileFilter. You could also try and steal some code from Spring's AntPathMatcher - that's very close to the glob-to-regex approach though.

回答2:

To add to the previous answer: org.apache.commons.io.FilenameUtils.wildcardMatch(filename, wildcardMatcher) from Apache commons-lang library.

回答3:

FileSystem#getPathMatcher(String) is an abstract method, you cannot use it directly. You need to do get a FileSystem instance first, e.g. the default one:

PathMatcher m = FileSystems.getDefault().getPathMatcher("glob:**/*.txt");

Some examples:

// file path
PathMatcher m = FileSystems.getDefault().getPathMatcher("glob:**/*.txt");
m.matches(Paths.get("/foo/bar.txt"));                // true
m.matches(Paths.get("/foo/bar.txt").getFileName());  // false

// file name only
PathMatcher n = FileSystems.getDefault().getPathMatcher("glob:*.txt");
n.matches(Paths.get("/foo/bar.txt"));                // false
n.matches(Paths.get("/foo/bar.txt").getFileName());  // true

来源：https://stackoverflow.com/questions/24677662/match-path-string-using-glob-in-java

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