JGit如何获取DiffEntry的RevCommit列表

时间:2016-10-11 14:55:06

标签: java git git-diff jgit

我使用JGit获得两个分支之间的区别如下:

ObjectReader reader = git.getRepository().newObjectReader();

CanonicalTreeParser oldTreeIter = new CanonicalTreeParser();
CanonicalTreeParser newTreeIter = new CanonicalTreeParser();

Ref master = git.getRepository().exactRef(getRefBranchName( branchMaster) );
RevTree masterTree = new RevWalk(git.getRepository()).parseTree(master.getObjectId());
    oldTreeIter.reset(reader, masterTree.getId());

Ref release = git.getRepository().exactRef(getRefBranchName( branchRelease));
RevTree releaseTree = new RevWalk(git.getRepository()).parseTree(release.getObjectId());
    newTreeIter.reset(reader, releaseTree.getId());

List<DiffEntry> diffs = git.diff().setNewTree(newTreeIter).setOldTree(oldTreeIter).call();

然后我可以按如下方式打印文件中的差异:

ByteArrayOutputStream outputStream =  new ByteArrayOutputStream();
DiffFormatter formatter = new DiffFormatter (outputStream);
formatter.setRepository(git.getRepository());
for (DiffEntry entry: diffs){               
    System.out.println("Diff Entry: " + entry + ", from: " + entry.getOldId()+", to: " + entry.getNewId());
    formatter.format(entry);
    String diffText = outputStream.toString("UTF-8");
    System.out.println(diffText);
    outputStream.reset();
}               

我在这个分支中看到了两个文件之间的所有差异,但是如何针对某些DiffEntry获取所有这些差异的提交?我还没有办法做到这一点

1 个答案:

答案 0 :(得分:0)

p4 sync没有DiffEntry s&#39;的列表。它表示对文件的单个更改,并描述是否添加,修改或删除了文件。并且提交不一定是变更的来源。

但是,您已经有指向计算DiffEntries的提交的指针。它是RevCommitmaster

使用release,您可以获取ref当前指向的提交的ID。

要获取包含提交的所有元数据并指向其ref.getObjectId(),您需要使用RevCommit,如下所示:

RevWalk

有关JGit差异API的更多信息,您可能需要阅读文章What’s the Difference? Creating Diffs with JGit