SVNkit-SVNAuthenticationException

一个奇怪的认证问题：svn: E170001

异常堆栈：

org.tmatesoft.svn.core.SVNAuthenticationException: svn: E170001: Authentication required for ' ��ʹ�����˺ŵ�¼����ʽ��hs\***'
	at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.authenticationFailed(SVNErrorManager.java:47)
	at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.authenticationFailed(SVNErrorManager.java:41)
	at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getNextAuthentication(DefaultSVNAuthenticationManager.java:218)
	at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:660)
	at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:365)
	at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:353)
	at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.performHttpRequest(DAVConnection.java:708)
	at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.exchangeCapabilities(DAVConnection.java:628)
	at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.open(DAVConnection.java:103)
	at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.openConnection(DAVRepository.java:1016)
	at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.checkPath(DAVRepository.java:219)
	at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteDiffSummarize.doDiffURLURL(SvnRemoteDiffSummarize.java:127)
	at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteDiffSummarize.run(SvnRemoteDiffSummarize.java:49)
	at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteDiffSummarize.run(SvnRemoteDiffSummarize.java:33)
	at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20)
	at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1235)
	at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:291)
	at org.tmatesoft.svn.core.wc.SVNDiffClient.doDiffStatus(SVNDiffClient.java:3223)
	at org.tmatesoft.svn.core.wc.SVNDiffClient.doDiffStatus(SVNDiffClient.java:1588)
	at com.xxx.patchgen.svn.SVNOperator.getDiffFiles(SVNOperator.java:88)
	at com.xxx.patchgen.test.Test.main(Test.java:11)

Reason：

摘自某网站：

AlexanderKitaev wrote

Hello, 

Might it be that your server uses NTLM or Negotiate authentication method? 

If so, it may make sense to put the following into jsvn script (I 
assume you use 1.3.6 version): 

EXTRA_JVM_ARGUMENTS="-Dsvnkit.http.methods=Basic,Digest,Negotiate,NTLM" 

NTLM authentication might not be supported by SVNKit in all 
environments, and Negotiate one requires JDK to be configured to 
support it (see 
http://www.syntevo.com/smartsvn/techarticles.html?page=configuration.kerberos-over-spnego
for how to configure it). Option above will force SVNKit to prefer 
simple "Basic" authentication method in case it is advertised by the 
server. 

解决：

注：该方法同样适用于解决在eclipse中使用svn插件时，无法保存密码，频繁认证失败问题：

只需在eclipse的启动参数中加入上述参数即可。