java JGit 分支结帐问题
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JGit branch checkout Issue
提问by Muthu
I am checking out a repository from github using the following code .
我正在使用以下代码从 github 检出存储库。
private String url = "https://github.com/organization/project.git";
Git repo = Git.cloneRepository().setURI(url).setDirectory(directory).setCloneAllBranches(true).call();
for (Ref b : repo.branchList().call()) {
System.out.println("(standard): cloned branch " + b.getName());
}
i am using the code
我正在使用代码
Git git = Git.open(checkout); //checkout is the folder with .git
git.pull().call(); //succeeds
If i chekout a branch
如果我结帐分行
Git git = Git.open(new File(checkout)); //checkout is the folder with .git
System.out.println(git.getRepository().getFullBranch());
CheckoutCommand checkout = git.checkout();
Ref call = checkout.setName("kalees").call();
It throws org.eclipse.jgit.api.errors.RefNotFoundException: Ref kalees can not be resolved.
它抛出 org.eclipse.jgit.api.errors.RefNotFoundException: Ref kalees can not beresolution。
What is the issue here, if i specify "master"instead of "kalees", it works fine. what change should i do to checkout a specific branch?
这里有什么问题，如果我指定“master”而不是“kalees”，它工作正常。我应该做哪些更改来结帐特定分支？
if i use the code
如果我使用代码
git.checkout().setCreateBranch(true).setName("refs/remotes/origin/kalees");
It checkout the kaleesbranch. but when i do pull operation
它结帐羽衣甘蓝分支。但是当我做拉操作时
git.pull().call();
it throws org.eclipse.jgit.api.errors.DetachedHeadException: HEAD is detached. What could be the , whether this is a checkout issue or pull issue ?
它抛出org.eclipse.jgit.api.errors.DetachedHeadException: HEAD is detached。可能是什么，这是结帐问题还是拉取问题？
回答by VonC
It should only happen if:
只有在以下情况下才会发生：
kaleesisn't an existing branch (or is incorrectly written, bad case)kaleesis a remote branch you haven tracked yet a a local branch
kalees不是现有的分支（或者写错了，不好的情况）kalees是您尚未跟踪的远程分支是本地分支
If so you might need to create it first (a bit like in this example)
如果是这样，您可能需要先创建它（有点像在这个例子中）
git.branchCreate().setForce(true).setName("kalees").setStartPoint("origin/kalees").call();
Following "JGit: Cannot find a tutorial or simple example", I would rather use:
在“ JGit：找不到教程或简单示例”之后，我宁愿使用：
git.branchCreate()
.setName("kalees")
.setUpstreamMode(SetupUpstreamMode.SET_UPSTREAM)
.setStartPoint("origin/kalees")
.setForce(true)
.call();
回答by Linsama
I met this question when I want to create a branch with an empty repository, there is no commit in this repository.
当我想创建一个带有空存储库的分支时遇到了这个问题，这个存储库中没有提交。
It's resolved when I commit something to the repository. Hope it's helpful for you :)
当我向存储库提交一些内容时，它就解决了。希望对你有帮助:)
回答by takumi3t9
Muthu your code is working you only need to add origin/branch like this to the branch call
Muthu 你的代码正在工作你只需要像这样添加 origin/branch 到分支调用
Ref call = checkout.setName("origin/kalees").call();
