java 客户端使用smb协议传输windows服务器上的文件

1.业务场景：甲方系统会不定期将一批xls文件存放到windows服务器的共享文件夹下，这些文件将作为本系统的数据来源，需要自动维护到本系统的数据库中。

2.准备工作：

　　①确保windows服务器的smb服务启动，如果未启动，在启用或关闭windows功能中开启

　　②确保存放的目录已经作为共享文件夹

3.代码

        
            jcifs
            jcifs
            1.3.17
        
        
        
            commons-io
            commons-io
            2.6
        

public static void main(String[] args) throws IOException {
    remoteFile(".docx");
    uploadFile("smb://192.168.1.96/myDownload/","C:\\Users\\USERNAME\\Desktop\\orders.txt");
}

public static SmbFile getShareedRoot() throws IOException {
    String remoteShareRoot = "smb://192.168.1.96/myDownload/";
    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("smb://192.168.1.96/",
            "USERNAME", "PASSWORD");
    SmbFile remoteFile = new SmbFile(remoteShareRoot,auth);
    remoteFile.connect(); //尝试连接
    return remoteFile;
}

public static SmbFile getSpecified(String remote) throws IOException {
    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("smb://192.168.1.96/",
            "USERNAME", "PASSWORD");
    SmbFile remoteFile = new SmbFile(remote,auth);
    remoteFile.connect(); //尝试连接
    return remoteFile;
}

//查看共享文件列表
public static SmbFile[] listFiles (SmbFile shareRoot) throws SmbException {
    return shareRoot.listFiles();
}

public static void downloadFile (SmbFile file) throws IOException {
    String fileName = file.getName();
    String localFile = fileName.substring(fileName.lastIndexOf("\\") + 1);
    try(InputStream in = new BufferedInputStream(new SmbFileInputStream(file)); FileOutputStream out  = new FileOutputStream(new File(localFile));){
        byte[] buffer = new byte[4096];
        int len = 0; //读取长度
        while ((len = in.read(buffer, 0, buffer.length)) != - 1) {
            out.write(buffer, 0, len);
        }
        out.flush(); //刷新缓冲的输出流
    }
}

public static void uploadFile (String shareFileRoot, String localFilePath) {
    try {
        File localFile = new File(localFilePath);
        String fileName = localFile.getName();
        SmbFile file = getSpecified(shareFileRoot);
        //当成file用
        if (!file.exists()){
            file.mkdirs();
        }
        //下面一行本来打算想新建File在指定目录下并且指定文件名，后面发现第一个参数与File同方法参数意义不同
        SmbFile remoteFile = new SmbFile( file.getURL() + "/" + fileName);
        IOUtils.copy(new FileInputStream(localFile), new SmbFileOutputStream(remoteFile));
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public static void remoteFile(String want) throws IOException {
    SmbFile shareRoot = getShareedRoot();
    SmbFile smbFile = Arrays.stream(listFiles(shareRoot)).filter(x -> x.getName().endsWith(want)).findAny().get();
    downloadFile(smbFile);
}

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