java windows 共享盘 java文件共享项目

在磁盘新建一个文件夹，右击文件夹属性，点击共享

点击网络和共享中心

设置文件夹可访问权限

到此就可以用本地ip加文件夹名称访问了，同局域网也可以通过改地址访问

文件夹的名称来自这张图的 网络路径

如果需要通过java的jcifs包访问请继续

这一步开启SMB1和服务器协议配置

命令查看是否开启

Get-SmbServerConfiguration | Select EnableSMB1Protocol, EnableSMB2Protocol

可以看出当前服务器SMB1未开启,尝试开启SMB1,

在powershell控制台输入:

Set-SmbServerConfiguration -EnableSMB1Protocol $true

报错,指定服务不存在,所以当前的服务器不支持SMB1,到此,原因找到了,因为本地使用的机器支持SMB1所以可以正常运行jcifs的功能,但是正式环境的服务器不支持SMB1,所以报错

我试了几台电脑都报错，所以只能通过控制面板开启，如下图：点击确定后需要重启生效

java项目 maven 引入

<!--java 通过 SmbFile 类操作共享文件夹-->
        <dependency>
            <groupId>jcifs</groupId>
            <artifactId>jcifs</artifactId>
            <version>1.3.17</version>
        </dependency>

以下代码来自他人博客，略作修改，读取和下载文件是可用的，其他未测试

import jcifs.smb.SmbException;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileInputStream;
import jcifs.smb.SmbFileOutputStream;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URLEncoder;
import java.net.UnknownHostException;

/**
 * java 通过 SmbFile 类操作共享文件夹
 */
public class SmbFileUtil {

    /**
     * 读取共享文件夹下的所有文件(文件夹)的名称
     *
     * @param remoteUrl
     */
    public static SmbFile[] 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() + f.getDate());
//                }
                return files;
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (SmbException e) {
            e.printStackTrace();
        }
        return null;
    }


    /**
     * 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();
        }
    }

    /**
     * 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();
            }
        }
    }

    /**
     * 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 fileName) {
        SmbFile smbFile;
        SmbFileInputStream smbFileInputStream = null;
        OutputStream outputStream = null;
        try {
            // smb://userName:passWord@host/path/shareFolderPath/fileName
            smbFile = new SmbFile(remoteUrl  + "/" + 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 fileName, String localDir) {
        InputStream in = null;
        OutputStream out = null;
        try {
            SmbFile remoteFile = new SmbFile(remoteUrl  + "/" + 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();
            }
        }
    }


    /**
     * 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();
        }
    }
}

业务实现代码
FileUtil.isFile来自cn.hutool.core.io （hutool包），判断文件是否存在的
upLoadPath 是本地地址的文件夹路径

代码意思就是读取共享文件夹的文件，然后下载保存到本地地址

@GetMapping(value = "/getSmbFile")
    public Result<?> getSmbFile(HttpServletResponse httpServletResponse) {
        SmbFile[] files = SmbFileUtil.getSharedFileList("smb://10.10.41.53/可选性曲线图片/");
        SmbFile smbFile = files[files.length - 1];
        
        boolean bo = FileUtil.isFile(new File(upLoadPath+"\\"+smbFile.getName()));
        if (!bo){
            SmbFileUtil.downloadFileToFolder("smb://10.10.41.53/可选性曲线图片/", smbFile.getName(), upLoadPath);
        }
        return Result.ok(smbFile.getName());
    }