JGit远程仓库文件提交实战：从克隆到推送的完整流程

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
import java.io.File;

public class JGitCommitExample {

    private static final String REMOTE_URL = "YOUR_REMOTE_REPOSITORY_URL";
    private static final String USERNAME = "YOUR_GIT_USERNAME";
    private static final String PASSWORD = "YOUR_GIT_PASSWORD";
    private static final String LOCAL_REPO_PATH = "/path/to/your/local/repo"; // 本地仓库存储路径

    public static void main(String[] args) {
        File localPath = new File(LOCAL_REPO_PATH);
        // 确保本地路径存在，如果不存在则创建
        if (!localPath.exists()) {
            localPath.mkdirs();
        }

        Git git = null;
        try {
            System.out.println("Cloning repository from " + REMOTE_URL + " to " + localPath);
            git = Git.cloneRepository()
                    .setURI(REMOTE_URL)
                    .setDirectory(localPath)
                    .setCredentialsProvider(new UsernamePasswordCredentialsProvider(USERNAME, PASSWORD))
                    .call();
            System.out.println("Repository cloned successfully.");

            // ... 后续操作，例如添加、提交、推送
        } catch (GitAPIException e) {
            System.err.println("Error during cloning: " + e.getMessage());
            e.printStackTrace();
        } finally {
            if (git != null) {
                git.close(); // 务必关闭Git对象以释放资源
            }
        }
    }
}

// 假设 git 对象已通过克隆获得
// String targetBranchName = "refs/heads/your-feature-branch"; // 完整引用名称
String targetBranchName = "your-feature-branch"; // 简短名称，JGit通常会自动解析为 refs/heads/your-feature-branch
try {
    System.out.println("Checking out to branch: " + targetBranchName);
    git.checkout()
       .setName(targetBranchName)
       .call();
    System.out.println("Switched to branch: " + git.getRepository().getBranch());
} catch (GitAPIException e) {
    System.err.println("Error during branch checkout: " + e.getMessage());
    e.printStackTrace();
    // 如果分支不存在，并且您想基于当前远程分支创建一个新的本地分支，可以这样做：
    // try {
    //     git.checkout()
    //        .setCreateBranch(true)
    //        .setName(targetBranchName)
    //        .setStartPoint("origin/" + targetBranchName) // 从远程同名分支创建
    //        .call();