PullCommand 在 JGit 中抛出 'Nothing to fetch' 异常
PullCommand throws 'Nothing to fetch' exception in JGit
我在我的项目中使用了 JGit 库。
这是我的 JGit 工具 class:
public class GitUtil {
private static final RefSpec REF_SPEC = new RefSpec(Constants.GIT_REF_SPEC);
private static final RefSpec REMOTE_REF_SPEC = new RefSpec(Constants.GIT_REMOTE_REF_SPEC);
private static final CredentialsProvider credentialsProvider = new UsernamePasswordCredentialsProvider(Constants.GIT_REMOTE_USER_NAME, Constants.GIT_REMOTE_PASSWORD);
private static Git git;
@Autowired
private HibernateUtilServiceImpl hibernateUtilServiceImpl;
@PostConstruct
public void initGitRepository() throws Exception {
File file = new File(Constants.GIT_REPOSITORY_MAIN_FILE_PATH);
FileRepositoryBuilder repositoryBuilder = new FileRepositoryBuilder();
repositoryBuilder.addCeilingDirectory(file);
repositoryBuilder.findGitDir(file);
if (repositoryBuilder.getGitDir() == null) {
git = Git.init().setDirectory(file.getParentFile()).call();
StoredConfig config = git.getRepository().getConfig();
config.setString("remote", "origin", "url", Constants.GIT_HSQLDB_REMOTE_REPOSTITORY_URL);
RemoteConfig remoteConfig = new RemoteConfig(config, "remote");
remoteConfig.addURI(new URIish(git.getRepository().getDirectory().toURI().toURL()));
remoteConfig.update(config);
config.save();
} else {
git = new Git(repositoryBuilder.build());
}
addUntrackedFiles(git.status().call().getUntracked(), git.getRepository());
}
public void commitAndPush() throws Exception {
hibernateUtilServiceImpl.dumpDataBase();
addUntrackedFiles(git.status().call().getUntracked(), git.getRepository());
addChangedFiles(git.status().call().getModified(), git.getRepository());
git.commit().setMessage("Update").call();
git.push().setRemote("origin")
.setCredentialsProvider(credentialsProvider)
.setRefSpecs(REF_SPEC)
.call();
}
public void pullAndMerge() throws GitAPIException, IOException {
git.pull().call();
hibernateUtilServiceImpl.backupDataBaseFromServer();
}
private void addUntrackedFiles(Collection<String> notTracked, Repository repository) throws Exception {
if (notTracked == null || notTracked.size() == 0)
return;
AddCommand addCommand = git.add();
for (String path : notTracked) {
addCommand.addFilepattern(path);
}
addCommand.call();
}
private void addChangedFiles(Collection<String> changed, Repository repository) throws GitAPIException {
if (changed == null || changed.size() == 0)
return;
AddCommand addCommand = git.add();
for (String path : changed) {
addCommand.addFilepattern(path);
}
addCommand.call();
}
}
我的配置 git .git 文件夹中的配置文件：
[core]
symlinks = false
repositoryformatversion = 0
filemode = false
logallrefupdates = true
[remote "origin"]
url = https://bitbucket.com/<my-profile>/<my-repository>.git
[remote "remote"]
url = file:///D:/database/.git/
[gui]
wmstate = zoomed
geometry = 443x321+75+75 171 192
除 pullAndMerge 方法外，几乎所有方法都有效。
我得到这个例外：
org.eclipse.jgit.api.errors.TransportException: Nothing to fetch.
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:135)
at org.eclipse.jgit.api.PullCommand.call(PullCommand.java:267)
at com.uz.laboratory.statistical.util.GitUtil.pullAndMerge(GitUtil.java:61)
at com.uz.laboratory.statistical.controller.settings.SettingsController.updateCurrentDatabaseButtonListener(SettingsController.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.eclipse.jgit.errors.TransportException: Nothing to fetch.
at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1155)
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:128)
... 65 more
我不知道如何修复它。
您能否提供一些建议和一些代码示例来解决此问题？
也许还有 jgit 正确拉取的示例代码。
谢谢。
更新：
感谢 Stanislav 和 Rudiger Herrmann 的回答...但是当我添加以下行时：
public static final String GIT_REMOTE_REF_SPEC = "+refs/heads/*:refs/remotes/origin/*";
...
private static final RefSpec REMOTE_REF_SPEC = new RefSpec(Constants.GIT_REMOTE_REF_SPEC);
...
//a have added this to my initGitRepository() method.
RemoteConfig originConfig = new RemoteConfig(config, "origin");
originConfig.addFetchRefSpec(REMOTE_REF_SPEC);
originConfig.update(config);
config.save();
我以前的问题现在已经解决了，但是我有一个新的问题，修改后：
org.eclipse.jgit.api.errors.RefNotAdvertisedException: Remote origin did not advertise Ref for branch master. This Ref may not exist in the remote or may be hidden by permission settings.
at org.eclipse.jgit.api.PullCommand.call(PullCommand.java:294)
at com.uz.laboratory.statistical.util.GitUtil.pullAndMerge(GitUtil.java:64)
at com.uz.laboratory.statistical.controller.settings.SettingsController.updateCurrentDatabaseButtonListener(SettingsController.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
看来，您没有正确配置 [remote "remote"] 部分。您必须在此处添加 属性
fetch = +refs/heads/*:refs/remotes/origin/*
它使 Git 获取所有 refs/heads/ 并将它们存储在本地作为 refs/remotes/origin/。 Here 是一些需要阅读的更多信息。
如果您尝试获取远程端不存在的引用，则会发生此异常。
例如，给定一个像 refs/heads/foo:refs/remotes/origin/foo 这样的 refspec，并且在远程端没有 foo 分支，就会出现这个异常。
我认为请求不存在的 ref 不是错误，在这种情况下 JGit 不应引发异常。而是应该返回一个适当的 FetchResult，以便应用程序代码可以检测到这种情况并采取相应的行动。
但是，在当前状态下，您可以通过捕获异常并尝试从异常消息中找出这种情况来解决此问题。
我在我的项目中使用了 JGit 库。 这是我的 JGit 工具 class:
public class GitUtil {
private static final RefSpec REF_SPEC = new RefSpec(Constants.GIT_REF_SPEC);
private static final RefSpec REMOTE_REF_SPEC = new RefSpec(Constants.GIT_REMOTE_REF_SPEC);
private static final CredentialsProvider credentialsProvider = new UsernamePasswordCredentialsProvider(Constants.GIT_REMOTE_USER_NAME, Constants.GIT_REMOTE_PASSWORD);
private static Git git;
@Autowired
private HibernateUtilServiceImpl hibernateUtilServiceImpl;
@PostConstruct
public void initGitRepository() throws Exception {
File file = new File(Constants.GIT_REPOSITORY_MAIN_FILE_PATH);
FileRepositoryBuilder repositoryBuilder = new FileRepositoryBuilder();
repositoryBuilder.addCeilingDirectory(file);
repositoryBuilder.findGitDir(file);
if (repositoryBuilder.getGitDir() == null) {
git = Git.init().setDirectory(file.getParentFile()).call();
StoredConfig config = git.getRepository().getConfig();
config.setString("remote", "origin", "url", Constants.GIT_HSQLDB_REMOTE_REPOSTITORY_URL);
RemoteConfig remoteConfig = new RemoteConfig(config, "remote");
remoteConfig.addURI(new URIish(git.getRepository().getDirectory().toURI().toURL()));
remoteConfig.update(config);
config.save();
} else {
git = new Git(repositoryBuilder.build());
}
addUntrackedFiles(git.status().call().getUntracked(), git.getRepository());
}
public void commitAndPush() throws Exception {
hibernateUtilServiceImpl.dumpDataBase();
addUntrackedFiles(git.status().call().getUntracked(), git.getRepository());
addChangedFiles(git.status().call().getModified(), git.getRepository());
git.commit().setMessage("Update").call();
git.push().setRemote("origin")
.setCredentialsProvider(credentialsProvider)
.setRefSpecs(REF_SPEC)
.call();
}
public void pullAndMerge() throws GitAPIException, IOException {
git.pull().call();
hibernateUtilServiceImpl.backupDataBaseFromServer();
}
private void addUntrackedFiles(Collection<String> notTracked, Repository repository) throws Exception {
if (notTracked == null || notTracked.size() == 0)
return;
AddCommand addCommand = git.add();
for (String path : notTracked) {
addCommand.addFilepattern(path);
}
addCommand.call();
}
private void addChangedFiles(Collection<String> changed, Repository repository) throws GitAPIException {
if (changed == null || changed.size() == 0)
return;
AddCommand addCommand = git.add();
for (String path : changed) {
addCommand.addFilepattern(path);
}
addCommand.call();
}
}
我的配置 git .git 文件夹中的配置文件：
[core]
symlinks = false
repositoryformatversion = 0
filemode = false
logallrefupdates = true
[remote "origin"]
url = https://bitbucket.com/<my-profile>/<my-repository>.git
[remote "remote"]
url = file:///D:/database/.git/
[gui]
wmstate = zoomed
geometry = 443x321+75+75 171 192
除 pullAndMerge 方法外，几乎所有方法都有效。 我得到这个例外：
org.eclipse.jgit.api.errors.TransportException: Nothing to fetch.
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:135)
at org.eclipse.jgit.api.PullCommand.call(PullCommand.java:267)
at com.uz.laboratory.statistical.util.GitUtil.pullAndMerge(GitUtil.java:61)
at com.uz.laboratory.statistical.controller.settings.SettingsController.updateCurrentDatabaseButtonListener(SettingsController.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.eclipse.jgit.errors.TransportException: Nothing to fetch.
at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1155)
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:128)
... 65 more
我不知道如何修复它。 您能否提供一些建议和一些代码示例来解决此问题？ 也许还有 jgit 正确拉取的示例代码。 谢谢。
更新：
感谢 Stanislav 和 Rudiger Herrmann 的回答...但是当我添加以下行时：
public static final String GIT_REMOTE_REF_SPEC = "+refs/heads/*:refs/remotes/origin/*";
...
private static final RefSpec REMOTE_REF_SPEC = new RefSpec(Constants.GIT_REMOTE_REF_SPEC);
...
//a have added this to my initGitRepository() method.
RemoteConfig originConfig = new RemoteConfig(config, "origin");
originConfig.addFetchRefSpec(REMOTE_REF_SPEC);
originConfig.update(config);
config.save();
我以前的问题现在已经解决了，但是我有一个新的问题，修改后：
org.eclipse.jgit.api.errors.RefNotAdvertisedException: Remote origin did not advertise Ref for branch master. This Ref may not exist in the remote or may be hidden by permission settings.
at org.eclipse.jgit.api.PullCommand.call(PullCommand.java:294)
at com.uz.laboratory.statistical.util.GitUtil.pullAndMerge(GitUtil.java:64)
at com.uz.laboratory.statistical.controller.settings.SettingsController.updateCurrentDatabaseButtonListener(SettingsController.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8411)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access00(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:380)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:294)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent4(GlassViewEventHandler.java:416)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:415)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null8(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
看来，您没有正确配置 [remote "remote"] 部分。您必须在此处添加 属性
fetch = +refs/heads/*:refs/remotes/origin/*
它使 Git 获取所有 refs/heads/ 并将它们存储在本地作为 refs/remotes/origin/。 Here 是一些需要阅读的更多信息。
如果您尝试获取远程端不存在的引用，则会发生此异常。
例如，给定一个像 refs/heads/foo:refs/remotes/origin/foo 这样的 refspec，并且在远程端没有 foo 分支，就会出现这个异常。
我认为请求不存在的 ref 不是错误，在这种情况下 JGit 不应引发异常。而是应该返回一个适当的 FetchResult，以便应用程序代码可以检测到这种情况并采取相应的行动。
但是，在当前状态下，您可以通过捕获异常并尝试从异常消息中找出这种情况来解决此问题。