JAVA实现上传下载共享文件

1、上传下载共享文件需要用到jcifs,先下载相关JAR包(开源项目的源码,demo,文挡、API应有尽有)

https://jcifs.samba.org/src/

2、创建共享目录，确定访问用户及密码（用户需要写入权限）

String url_share_key = "192.16.20.15"; //共享IP
String url_share_user = "administrator"; //共享用户 需要有写入权限
String url_share_pwd = "123456"; //密码
String dir_share_key = "192.16.20.15/test/"; //共享根路径

3、用户凭证，用户凭证还可以通过远程路径传递(smb://用户名:密码@192.168.0.11/test )

NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(url_share_key, url_share_user, url_share_pwd); 

4、上传

   /**
     * 从本地上传文件到共享目录
     * @param remoteUrl 远程路径
     * @param localFilePath 本地路径
     * @param auth 用户凭证
     */
    public static void smbPut(String remoteUrl, String localFilePath,NtlmPasswordAuthentication auth) {
        InputStream in = null;
        OutputStream out = null;
        try {
            // 需要上传的文件 取出文件名称
            File localFile = new File(localFilePath);
            String fileName = localFile.getName();

            // 共享目录 不存在则创建
            SmbFile remoteFileDir = new SmbFile(remoteUrl, auth);
            if (!remoteFileDir.isDirectory()) {
                remoteFileDir.mkdirs();
            }

            // 上传
            SmbFile remoteFile = new SmbFile(remoteUrl + File.separator
                    + fileName, auth);
            in = new BufferedInputStream(new FileInputStream(localFile));
            out = new BufferedOutputStream(new SmbFileOutputStream(remoteFile));

            // 缓冲数组
            byte[] b = new byte[1024 * 5];
            int len;
            while ((len = in.read(b)) != -1) {
                out.write(b, 0, len);
            }
            // 刷新此缓冲的输出流
            out.flush();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

5、下载

　　/**
     * 从共享目录拷贝文件到本地
     * @param remoteUrl 远程路径
     * @param localDir 本地路经
     * @param auth
     */
    public static void smbGet(String remoteUrl, String localDir,NtlmPasswordAuthentication auth) {
        InputStream in = null;
        OutputStream out = null;
        try {
            //远程文件
            SmbFile remoteFile = new SmbFile(remoteUrl,auth);
            if (remoteFile == null) {
                System.out.println("共享文件不存在");
                return;
            }
            
            //创建本地文件并写入
            String fileName = remoteFile.getName();
            File localFile = new File(localDir + File.separator + fileName);
            in = new BufferedInputStream(new SmbFileInputStream(remoteFile));
            out = new BufferedOutputStream(new FileOutputStream(localFile));
            byte[] buffer = new byte[1024];
            while (in.read(buffer) != -1) {
                out.write(buffer);
                buffer = new byte[1024];
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                out.close();
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }