问题
JAX-RS/Jersey allows URL path elements to be converted to Java method arguments using @PathParam annotations.
Is there a way to convert an unknown number of path elements into arguments to a vararg Java method? I. e. /foo/bar/x/y/z should go to method: foo(@PathParam(...) String [] params) { ... } where params[0] is x, params[1] is y and params[2] is z
Can I do this in Jersey/JAX-RS or some convenient way?
回答1:
Not sure if this is exactly what you were looking for but you could do something like this.
@Path("/foo/bar/{other: .*}
public Response foo(@PathParam("other") VariableStrings vstrings) {
String[] splitPath = vstrings.getSplitPath();
...
}
Where VariableStrings is a class that you define.
public class VariableStrings {
private String[] splitPath;
public VariableStrings(String unparsedPath) {
splitPath = unparsedPath.split("/");
}
}
Note, I haven't checked this code, as it's only intended to give you an idea. This works because VariableStrings can be injected due to their constructor which only takes a String.
Check out the docs.
Finally, as an alternative to using the @PathParam annotation to inject a VariableString you could instead wrap this logic into your own custom Jersey Provider. This provider would inject a "VariableStrings" more or less the same manner as above, but it might look a bit cleaner. No need for a PathParam annotation.
Coda Hale gives a good overview.
来源：https://stackoverflow.com/questions/10925135/path-segment-sequence-to-vararg-array-in-jax-rs-jersey