如何使用 jGit 克隆单个文件? [英] How to clone a single file with jGit?
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问题描述
我正在 Java 中使用 jGit,并且已经成功克隆了整个存储库.但是我找不到在存储库中下载单个文件的方法.我试过了:
I am working with jGit in Java and I have managed to clone an entire repository. But I can not find a way to download a single file inside a repository. I have tried:
- 更改指定文件路径的 URL.
- 通过指定子目录来更改 URL.
他们都没有工作.
我的代码(克隆整个仓库)如下:
My code (clone whole repository) is as follows:
public File cloneRepository(String url, String path) throws GitAPIException {
File download = new File (path);
if (download.exists()){
System.out.println("Error");
return null;
}
else{
CloneCommand clone = Git.cloneRepository()
.setURI(url)
.setDirectory(download);
try (Git repositorio = clone.call()) {
return repositorio.getRepository().getWorkTree();
}
}
}
如何更改为下载单个文件?
How could it be changed to download a single file?
推荐答案
你只需要遍历文件树找到你需要的文件这是一个代码示例
you just need to walk the file tree to find file you need Here is a code sample
// Clone remote repository
CloneCommand cloneCommand = Git.cloneRepository();
cloneCommand.setDirectory(localRepository.toFile());
cloneCommand.setBare(false);
cloneCommand.setURI(remoteRepository.toString());
cloneCommand.setTransportConfigCallback(transportConfigCallback);
Repository repository = cloneCommand.call().getRepository();
ObjectId ref = repository.resolve("your commit or branch");
// Resolve commit hash
RevWalk revWalk = new RevWalk(repository);
RevCommit revCommit = revWalk.parseCommit(ref);
Commit commit = new Commit(revCommit);
TreeWalk tree = new TreeWalk(repository);
tree.addTree(revCommit.getTree());
tree.setRecursive(true);
// Set path filter, to show files on matching path
tree.setFilter(PathFilter.create("path to file"));
try (ObjectReader objectReader = repository.newObjectReader()) {
while (tree.next()) {
String fileName = tree.getPathString();
byte[] fileBytes = objectReader.open(tree.getObjectId(0)).getBytes();
}
}
return paths;
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