java 通过 SmbFile 类操作共享文件夹

野性酷女 2021-09-07 06:06 528阅读 0赞

## 一、添加依赖 ##

在pom.xml文件夹中添加如下的依赖就可以引用SmbFile类的jar包。

<dependency>
           <groupId>jcifs</groupId>
           <artifactId>jcifs</artifactId>
           <version>1.3.17</version>
    </dependency>

## 二、读取文件 ##

/**
      * 读取共享文件夹下的所有文件(文件夹)的名称
      * @param remoteUrl
      */
    public static void getSharedFileList(String remoteUrl) {
        SmbFile smbFile;
        try {
            // smb://userName:passWord@host/path/
            smbFile = new SmbFile(remoteUrl);
            if (!smbFile.exists()) {
                System.out.println("no such folder");
            } else {
                SmbFile[] files = smbFile.listFiles();
                for (SmbFile f : files) {
                    System.out.println(f.getName());
                }
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (SmbException e) {
            e.printStackTrace();
        }
    }

## 三、创建文件夹 ##

/**
     * 创建文件夹
     * @param remoteUrl 
     * @param folderName
     * @return
     */
    public static void smbMkDir(String remoteUrl, String folderName) {
        SmbFile smbFile;
        try {
            // smb://userName:passWord@host/path/folderName
            smbFile = new SmbFile(remoteUrl + folderName);
            if (!smbFile.exists()) {
                smbFile.mkdir();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (SmbException e) {
            e.printStackTrace();
        }
    }

## 四、上传文件 ##

/**
      * 上传文件
      * @param remoteUrl
      * @param shareFolderPath
      * @param localFilePath
      * @param fileName
      */
    public static void uploadFileToSharedFolder(String remoteUrl, String shareFolderPath, String localFilePath, String fileName) {
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            File localFile = new File(localFilePath);
            inputStream = new FileInputStream(localFile);
            // smb://userName:passWord@host/path/shareFolderPath/fileName
            SmbFile smbFile = new SmbFile(remoteUrl + shareFolderPath + "/" + fileName);
            smbFile.connect();
            outputStream = new SmbFileOutputStream(smbFile);
            byte[] buffer = new byte[4096];
            int len = 0; // 读取长度
            while ((len = inputStream.read(buffer, 0, buffer.length)) != -1) {
                outputStream.write(buffer, 0, len);
            }
            // 刷新缓冲的输出流
            outputStream.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                outputStream.close();
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

## 五、下载文件 ##

/**
      * 下载文件到浏览器
      * @param httpServletResponse
      * @param remoteUrl
      * @param shareFolderPath
      * @param fileName
      */
    public static void downloadFileToBrowser(HttpServletResponse httpServletResponse, String remoteUrl, String shareFolderPath, String fileName) {
        SmbFile smbFile;
        SmbFileInputStream smbFileInputStream = null;
        OutputStream outputStream = null;
        try {
            // smb://userName:passWord@host/path/shareFolderPath/fileName
            smbFile = new SmbFile(remoteUrl + shareFolderPath + "/" + fileName);
            smbFileInputStream = new SmbFileInputStream(smbFile);
            httpServletResponse.setHeader("content-type", "application/octet-stream");
            httpServletResponse.setContentType("application/vnd.ms-excel;charset=UTF-8");
            httpServletResponse.setHeader("Content-disposition", "attachment; filename=" + fileName);
            // 处理空格转为加号的问题
            httpServletResponse.setHeader("Content-Disposition", "attachment; fileName=" + fileName + ";filename*=utf-8''" + URLEncoder.encode(fileName, "UTF-8").replaceAll("\\+", "%20"));
            outputStream = httpServletResponse.getOutputStream();
            byte[] buff = new byte[2048];
            int len;
            while ((len = smbFileInputStream.read(buff)) != -1) {
                outputStream.write(buff, 0, len);
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (SmbException e) {
            e.printStackTrace();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        finally {
            try {
                outputStream.close();
                smbFileInputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

/**
      * 下载文件到指定文件夹
      * @param remoteUrl
      * @param shareFolderPath
      * @param fileName
      * @param localDir
      */
    public static void downloadFileToFolder(String remoteUrl, String shareFolderPath, String fileName, String localDir) {
        InputStream in = null;
        OutputStream out = null;
        try {
            SmbFile remoteFile = new SmbFile(remoteUrl + shareFolderPath + File.separator + fileName);
            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();
            }
        }
    }

## 六、删除文件 ##

/**
      * 删除文件
      * @param remoteUrl
      * @param shareFolderPath
      * @param fileName
      */
    public static void deleteFile(String remoteUrl, String shareFolderPath, String fileName) {
        SmbFile SmbFile;
        try {
            // smb://userName:passWord@host/path/shareFolderPath/fileName
            SmbFile = new SmbFile(remoteUrl + shareFolderPath + "/" + fileName);
            if (SmbFile.exists()) {
                SmbFile.delete();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (SmbException e) {
        e.printStackTrace();
        }
    }

删除文件夹将路径指向要删除的文件夹即可。

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