Java 无法使用svnkit将整个SVN存储库签出到本地计算机

我正在尝试使用svnkit到本地目录签出整个SVN存储库，当我尝试SVNUpdateClient updateClient=clientManger.getUpdateClient（）时；始终返回null。 我正在使用svnkit这样做

这是我的密码：

File wcFolder=new File("some directory path");
        ISVNOptions myOptions=SVNWCUtil.createDefaultOptions(true); 
         ISVNAuthenticationManager myAuthManager=SVNWCUtil.createDefaultAuthenticationManager("xyz","abc"); 
        SVNClientManager clientManger = SVNClientManager.newInstance(myOptions, myAuthManager);
        SVNUpdateClient updateClient = clientManger.getUpdateClient();
        updateClient.setIgnoreExternals(false); 
        updateClient.doCheckout(SVNURL.parseURIDecoded("some path to xyz/trunk"), wcFolder, SVNRevision.HEAD,SVNRevision.HEAD, SVNDepth.INFINITY, true);

---

我找到了查看SVN的正确方法

SVNURL svnurl = SVNURL.parseURIDecoded(url);
SVNRepository repository = SVNRepositoryFactory.create(svnurl);
ISVNAuthenticationManager authManager = SVNWCUtil.createDefaultAuthenticationManager(uname, password);
repository.setAuthenticationManager(authManager);
SVNClientManager ourClientManager = SVNClientManager.newInstance();
ourClientManager.setAuthenticationManager(authManager);
SVNUpdateClient updateClient = ourClientManager.getUpdateClient();
updateClient.setIgnoreExternals(true);

long latestRevision = repository.getLatestRevision();
if (updateClient.doCheckout(svnurl, destinationDir,
        SVNRevision.HEAD, SVNRevision.HEAD, SVNDepth.INFINITY,
                allowUnversionedObstructions) == latestRevision) {
    ourClientManager.dispose();
}