基于Jgit 实现java 自动化操作 git 相关功能

2019-10-18 阅读 {{counts.readCount}} 评论 {{counts.commentCount}}

## 需求
通过java代码实现git的常用的操作
如`clone`、`add`、`commit`、`pull`、`push` 等
最终可以用于例如服务器生产环境中的部分静态文件一件同步

## 代码
```java
import java.io.File;
import java.io.IOException;


import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.eclipse.jgit.api.AddCommand;
import org.eclipse.jgit.api.CommitCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.PullResult;
import org.eclipse.jgit.api.PushCommand;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.transport.CredentialsProvider;
import org.eclipse.jgit.transport.PushResult;
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;


/**
 * java 操作 git
 * 实现java自动化操作git 简单功能实现
 * <p>
 * 基于Jgit
 * <dependency>
 * <groupId>org.eclipse.jgit</groupId>
 * <artifactId>org.eclipse.jgit</artifactId>
 * <version>${jgit.version}</version>
 * </dependency>
 * <p>
 * 代码参考
 * https://www.jqhtml.com/26305.html
 */
public class GitUtils {


    public static UsernamePasswordCredentialsProvider getCredentialsProvider(String gituser, String gitpasswd) {
        UsernamePasswordCredentialsProvider credentialsProvider = null;
        if (StringUtils.isNotEmpty(gituser) && StringUtils.isNotEmpty(gitpasswd)) {
            credentialsProvider = new UsernamePasswordCredentialsProvider(gituser, gitpasswd);
        }
        return credentialsProvider;
    }


    public static void doInit(File gitDir) throws GitAPIException {
        if (!gitDir.exists()) {
            gitDir.mkdirs();
        }
        Git git = Git.init().setDirectory(gitDir).setBare(false).call();
    }


    public static void doClone(File gitDir, String gituri, CredentialsProvider credentialsProvider, String branch)
            throws GitAPIException {
        Git.cloneRepository().setURI(gituri)
                .setCredentialsProvider(credentialsProvider)
                .setDirectory(gitDir).setCloneAllBranches(false)
                .setBranch(branch).call().close();
    }


    public static PullResult doPull(File gitDir, String url, CredentialsProvider credentialsProvider) throws IOException,
            GitAPIException {
        Git git = Git.open(gitDir);
        return git.pull().setCredentialsProvider(credentialsProvider).call();
    }


    public static void doAdd(File gitDir, String... files)
            throws GitAPIException, IOException {
        try (Git git = Git.open(gitDir)) {
            AddCommand add = git.add();
            if (ArrayUtils.isEmpty(files)) {
                add.addFilepattern(".");
            } else {
                for (String file : files) {
                    add.addFilepattern(file);
                }
            }
            add.call();
        }
    }


    public static void doCommit(File gitDir, String message) throws GitAPIException, IOException {
        Git git = Git.open(gitDir);
        CommitCommand commit = git.commit().setAll(false).setMessage(message);
        commit.call();
    }


    public static Iterable<PushResult> doPush(File gitDir, CredentialsProvider credentialsProvider) throws IOException, GitAPIException {
        Git git = Git.open(gitDir);
        PushCommand push = git.push().setCredentialsProvider(credentialsProvider);
        return push.call();
    }
}
```

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