相关疑难解决方法(0)

我正在使用新的Java 7 IO功能,实际上我试图接收文件夹的所有xml文件.但是当文件夹不存在时会引发异常,如何检查该文件夹是否与新IO一起存在？

public UpdateHandler(String release) {
    log.info("searching for configuration files in folder " + release);
    Path releaseFolder = Paths.get(release);
    try(DirectoryStream<Path> stream = Files.newDirectoryStream(releaseFolder, "*.xml")){

        for (Path entry: stream){
            log.info("working on file " + entry.getFileName());
        }
    }
    catch (IOException e){
        log.error("error while retrieving update configuration files " + e.getMessage());
    }


}