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Java使用jcifs讀取Windows的共享文件

更新時(shí)間：2026年04月03日 09:14:48 作者：J2蝦蝦

這篇文章主要為大家詳細(xì)介紹了Java如何使用jcifs實(shí)現(xiàn)讀取Windows的共享文件,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

依賴配置

<dependency>
            <groupId>org.codelibs</groupId>
            <artifactId>jcifs</artifactId>
            <version>3.0.2</version>
        </dependency>

Java類

package com.cim.ext.components;

import com.cim.ext.dto.FileInfo;
import lombok.extern.slf4j.Slf4j;
import org.codelibs.jcifs.smb.CIFSContext;
import org.codelibs.jcifs.smb.context.SingletonContext;
import org.codelibs.jcifs.smb.impl.NtlmPasswordAuthenticator;
import org.codelibs.jcifs.smb.impl.SmbFile;
import org.codelibs.jcifs.smb.impl.SmbFileInputStream;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.List;

/**
 * 使用jcifs讀取SMB共享文件的工具類
 */
@Component
@Slf4j
public class SmbFileReader {

    @Value("${smb.user}")
    private String smbUser;

    @Value("${smb.password}")
    private String smbPassword;

    public SmbFile readSmbFile(String path) throws MalformedURLException{
        // 創(chuàng)建認(rèn)證器
        NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator(
                null,  // 域名，這里不需要填
                smbUser,
                smbPassword
        );

        // 創(chuàng)建CIFS上下文
        CIFSContext context = SingletonContext.getInstance().withCredentials(auth);

        // 初始化SMB文件對(duì)象
        return new SmbFile(path, context);
    }

    public SmbFile[] list(String path) {


        List<SmbFile> smbFiles = new ArrayList<>();
        SmbFile dir = null;
        
        try {
            dir = readSmbFile(path);
            
            if (!dir.exists()) {
                log.warn("Directory not found: {}", path);
                return null;
            }
            
            if (!dir.isDirectory()) {
                log.warn("Path is not a directory: {}", path);
                return null;
            }
            
            SmbFile[] files = dir.listFiles();
            return files;


            // smb://10.20.12.114/FreedoData/2023/
            
        } catch (Exception ex) {
            log.error("Failed to list files from path: {}", path, ex);
            return null;
        } finally {
            if (dir != null) {
                dir.close();
            }
        }

    }


    public SmbFile[] list2(String path) throws MalformedURLException {


        SmbFile dir = new SmbFile(path);

        try {
            dir = readSmbFile(path);

            if (!dir.exists()) {
                log.warn("Directory not found: {}", path);
                return null;
            }

            if (!dir.isDirectory()) {
                log.warn("Path is not a directory: {}", path);
                return null;
            }

            SmbFile[] files = dir.listFiles();
            return files;


            // smb://10.20.12.114/FreedoData/2023/

        } catch (Exception ex) {
            log.error("Failed to list files from path: {}", path, ex);
            return null;
        } finally {
            if (dir != null) {
                dir.close();
            }
        }

    }


}

這個(gè)框架需要注意的是Smb的文件夾路徑必須是/結(jié)尾，否則讀取子文件夾會(huì)有問(wèn)題。

知識(shí)擴(kuò)展

下面小編為大家整理了一些Java讀取共享文件的方法，希望對(duì)大家有所幫助

1.java讀取遠(yuǎn)程共享文件

例子一

import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileInputStream;
public class ReadShareFile {
public static void main(String[] args) {
    try {
        SmbFile smbFile = new SmbFile(
            "smb://test:test@192.168.1.1/out/test.txt");
            int length = smbFile.getContentLength();// 得到文件的大小
            byte buffer[] = new byte[length];
            SmbFileInputStream in = new SmbFileInputStream(smbFile);
            // 建立smb文件輸入流
            while ((in.read(buffer)) != -1) {
                System.out.write(buffer);
                System.out.println(buffer.length);
            }
            in.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
}

例子二

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbFileInputStream;
public class TestReadSmb {
    public static void main(String[] args){
        String smbMachine="smb://test:test@10.108.23.200/temp/test.txt";
        String localPath="D:\\temp";
        File file=readFromSmb(smbMachine,localPath);
        removeFile(file);
    }
/** ***
* 從smbMachine讀取文件并存儲(chǔ)到localpath指定的路徑
*
* @param smbMachine
*            共享機(jī)器的文件,如smb://xxx:xxx@10.108.23.112/myDocument/測(cè)試文本.txt,xxx:xxx是共享機(jī)器的用戶名密碼
* @param localpath
*            本地路徑
* @return
*/
public static File readFromSmb(String smbMachine,String localpath){
    File localfile=null;
    InputStream bis=null;
    OutputStream bos=null;
    try{
        SmbFile rmifile = new SmbFile(smbMachine);
        String filename=rmifile.getName();
        bis=new BufferedInputStream(new SmbFileInputStream(rmifile));
        localfile=new File(localpath+File.separator+filename);
        System.out.println("localfile=="+localfile);
        bos=new BufferedOutputStream(new FileOutputStream(localfile));
        int length=rmifile.getContentLength();
        System.out.println("length=="+length);
        byte[] buffer=new byte[length];
        Date date=new Date();
        bis.read(buffer);
        bos.write(buffer);
        Date end=new Date();
        int time= (int) ((end.getTime()-date.getTime())/1000);
        if(time>0)
        System.out.println("用時(shí):"+time+"秒 "+"速度:"+length/time/1024+"kb/秒");
    } catch (Exception e){
        System.out.println(e.getMessage());
    }finally{
        try {
            bos.close();
            bis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return localfile;
}
public static boolean removeFile(File file) {
    return file.delete();
}
}

2.Java讀寫(xiě)Windows共享文件夾

InputStream in = null;
OutputStream out = null;
try {
//獲取圖片
File localFile = new File("C:/testjpg");
String remotePhotoUrl = "smb://share:admin@11/sharedFolder/"; //存放圖片的共享目錄
SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMddHHmmssSSS_");
SmbFile remoteFile = new SmbFile(remotePhotoUrl + "/" + fmtformat(new Date()) + localFilegetName());
remoteFileconnect(); //嘗試連接
in = new BufferedInputStream(new FileInputStream(localFile));
out = new BufferedOutputStream(new SmbFileOutputStream(remoteFile));
byte[] buffer = new byte[4096];
int len = 0; //讀取長(zhǎng)度
while ((len = inread(buffer, 0, bufferlength)) != -1) {
outwrite(buffer, 0, len);
}
outflush(); //刷新緩沖的輸出流
}
catch (Exception e) {
String msg = "發(fā)生錯(cuò)誤：" + egetLocalizedMessage();
Systemoutprintln(msg);
}
finally {
try {
if(out != null) {
outclose();
}
if(in != null) {
inclose();
}
}
catch (Exception e) {}
}
以上代碼中，使用了JCIFS框架提供的SmbFile類，這個(gè)類和Java的File類比較相似，使用這個(gè)類的對(duì)象，可以處理遠(yuǎn)程文件的讀寫(xiě)。使用File對(duì)象讀取本地文件，然后使用SmbFile對(duì)象寫(xiě)入遠(yuǎn)程文件。SmbFile的connect()方法可以嘗試連接遠(yuǎn)程文件夾，如果賬號(hào)或密碼錯(cuò)誤，將拋出連接異常。
當(dāng)下載遠(yuǎn)程文件時(shí)，使用SmbFile對(duì)象讀取遠(yuǎn)程文件即可，代碼如下：
InputStream in = null ;
ByteArrayOutputStream out = null ;
try {
//創(chuàng)建遠(yuǎn)程文件對(duì)象
String remotePhotoUrl = "smb://share:admin@11/sharedFolder/testjpg";
SmbFile remoteFile = new SmbFile(remotePhotoUrl);
remoteFileconnect(); //嘗試連接
//創(chuàng)建文件流
in = new BufferedInputStream(new SmbFileInputStream(remoteFile));
out = new ByteArrayOutputStream((int)remoteFilelength());
//讀取文件內(nèi)容
byte[] buffer = new byte[4096];
int len = 0; //讀取長(zhǎng)度
while ((len = inread(buffer, 0, bufferlength)) != - 1) {
outwrite(buffer, 0, len);
}
outflush(); //刷新緩沖的輸出流
return outtoByteArray();
}
catch (Exception e) {
String msg = "下載遠(yuǎn)程文件出錯(cuò)：" + egetLocalizedMessage();
Systemoutprintln(msg);
}
finally {
try {
if(out != null) {
outclose();
}
if(in != null) {
inclose();
}
}
catch (Exception e) {}
}

到此這篇關(guān)于Java使用jcifs讀取Windows的共享文件的文章就介紹到這了,更多相關(guān)Java cifs讀取Windows共享文件內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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