我如何使用JGit进行git推送？

Question

我正在尝试构建一个允许用户使用基于Git的存储库的Java应用程序.我可以使用以下命令从命令行执行此操作:

git init
<create some files>
git add .
git commit
git remote add <remote repository name> <remote repository URI>
git push -u <remote repository name> master

这允许我创建,添加和提交内容到我的本地存储库并将内容推送到远程存储库.我现在正试图在我的Java代码中使用JGit做同样的事情.我能够轻松地使用JGit API执行git init,添加和提交.

Repository localRepo = new FileRepository(localPath);
this.git = new Git(localRepo);        
localRepo.create();  
git.add().addFilePattern(".").call();
git.commit().setMessage("test message").call();

同样,所有这一切都很好.我找不到任何例子或者等效代码git remote add和git push.我确实看过这个问题.

testPush()失败并显示错误消息TransportException: origin not found.在其他例子我见过https://gist.github.com/2487157做git clone 之前 git push,我不明白为什么这是必要的.

任何有关如何做到这一点的指示将不胜感激.

Answer 1

最简单的方法是使用JGit Porcelain API:

    Repository localRepo = new FileRepository(localPath);
    Git git = new Git(localRepo); 

    // add remote repo:
    RemoteAddCommand remoteAddCommand = git.remoteAdd();
    remoteAddCommand.setName("origin");
    remoteAddCommand.setUri(new URIish(httpUrl));
    // you can add more settings here if needed
    remoteAddCommand.call();

    // push to remote:
    PushCommand pushCommand = git.push();
    pushCommand.setCredentialsProvider(new UsernamePasswordCredentialsProvider("username", "password"));
    // you can add more settings here if needed
    pushCommand.call();

Answer 2

您将在org.eclipse.jgit.test所有需要的示例中找到:

• RemoteconfigTest.java用途Config:

  config.setString("remote", "origin", "pushurl", "short:project.git");
  config.setString("url", "https://server/repos/", "name", "short:");
  RemoteConfig rc = new RemoteConfig(config, "origin");
  assertFalse(rc.getPushURIs().isEmpty());
  assertEquals("short:project.git", rc.getPushURIs().get(0).toASCIIString());
  

• PushCommandTest.java说明了各种推送方案,使用RemoteConfig.
  见testTrackingUpdate()一个完整的例子推动了跟踪远程分支.
  摘录:

  String trackingBranch = "refs/remotes/" + remote + "/master";
  RefUpdate trackingBranchRefUpdate = db.updateRef(trackingBranch);
  trackingBranchRefUpdate.setNewObjectId(commit1.getId());
  trackingBranchRefUpdate.update();
  
  URIish uri = new URIish(db2.getDirectory().toURI().toURL());
  remoteConfig.addURI(uri);
  remoteConfig.addFetchRefSpec(new RefSpec("+refs/heads/*:refs/remotes/"
      + remote + "/*"));
  remoteConfig.update(config);
  config.save();
  
  
  RevCommit commit2 = git.commit().setMessage("Commit to push").call();
  
  RefSpec spec = new RefSpec(branch + ":" + branch);
  Iterable<PushResult> resultIterable = git.push().setRemote(remote)
      .setRefSpecs(spec).call();