使用 Java 和 Samba JCIFS 访问文件

Question

我有一个关于使用 Samba JCIFS 访问文件的问题。

所以我想访问一个服务器，我们将其称为server.unv.edu，工作组是WKGRP。

该服务器中有一个共享：\\server.unv.edu\pcb$

我尝试访问服务器的方式是：

public class SMBAuthenticator extends NtlmAuthenticator {

private String username = "username";
private String password = "password";
private String domain = "smb://server.unv.edu/WKGRP/";

public SMBAuthenticator() {
    NtlmAuthenticator.setDefault(this);
}

并且

public class SMBConnection {

public String urlString = "smb://server.unv.edu/pcb$/path/file.txt";
NtlmPasswordAuthentication auth;
SmbFile smbFile;

public SMBConnection() throws MalformedURLException{;
    //url = new URL(urlString);
    SMBAuthenticator authenticator = new SMBAuthenticator();
    auth = authenticator.getNtlmPasswordAuthentication();   
    smbFile = new SmbFile(urlString, auth);
}

public InputStream getSMBInputStream() throws IOException{
    return this.smbFile.getInputStream();
}

public InputStream getInputStream() throws IOException{
    InputStream is = this.getSMBInputStream();
    return is;
}
}

但这不起作用。我收到错误：

jcifs.smb.SmbAuthException: Logon failure: unknown user name or bad password.
at jcifs.smb.SmbTransport.checkStatus(SmbTransport.java:544)
at jcifs.smb.SmbTransport.send(SmbTransport.java:661)
at jcifs.smb.SmbSession.sessionSetup(SmbSession.java:390)
at jcifs.smb.SmbSession.send(SmbSession.java:218)
at jcifs.smb.SmbTree.treeConnect(SmbTree.java:176)
at jcifs.smb.SmbFile.doConnect(SmbFile.java:929)
at jcifs.smb.SmbFile.connect(SmbFile.java:954)
at jcifs.smb.SmbFile.connect0(SmbFile.java:880)
at jcifs.smb.SmbFile.open0(SmbFile.java:972)
at jcifs.smb.SmbFile.open(SmbFile.java:1006)
at jcifs.smb.SmbFileInputStream.<init>(SmbFileInputStream.java:73)
at jcifs.smb.SmbFileInputStream.<init>(SmbFileInputStream.java:65)
at jcifs.smb.SmbFile.getInputStream(SmbFile.java:2844)
at edu.umd.lib.sambaConnection.SMBConnection.getSMBInputStream(SMBConnection.java:33)
at edu.umd.lib.sambaConnection.SMBConnection.getInputStream(SMBConnection.java:37)
at edu.umd.lib.sambaConnection.SambaConnectionTest.test(SambaConnectionTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

任何人都可以给我建议或代码的正确性，以帮助我访问该文件吗？

Answer 1

你让这件事变得比应有的更加困难。请按照以下步骤操作，并确保您正在创建的共享文件夹对您正在使用的用户具有写入权限。

1. 下载jar文件http://jcifs.samba.org/（只有一个jar文件）
2. 复制并将下面的代码粘贴到您的用户名、密码和共享文件夹的信息中，这就是您所需要的。

我在 Linux 上运行此代码，并且想要写入 Windows 框，因此您想要创建一个共享文件夹并将共享文件夹名称放入低于变量
如果您不知道如何在 Windows 上创建共享文件夹...一如既往地使用 google

    String user = "your_user_name";
    String pass ="your_pass_word";

    String sharedFolder="shared";
    String path="smb://ip_address/"+sharedFolder+"/test.txt";
    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("",user, pass);
    SmbFile smbFile = new SmbFile(path,auth);
    SmbFileOutputStream smbfos = new SmbFileOutputStream(smbFile);
    smbfos.write("testing....and writing to a file".getBytes());
    System.out.println("completed ...nice !");

Answer 2

自接受答案以来，NtlmPasswordAuthentication 已被弃用。
因此，这就是我解决的方法，例如，将文件复制到 samba 共享：

String user="your_samba_username";
String pass="your_samba_password";
String path="smb://samba_ip_address/outputdir/outputfile.txt";
try {
    InputStream  winfis = new FileInputStream(new File("c:/inputdir/inputfile.txt"));
    try {
        SingletonContext baseContext = SingletonContext.getInstance(); 
        Credentials credentials=new NtlmPasswordAuthenticator(null,user,pass); 
        CIFSContext testCtx = baseContext.withCredentials(credentials);
        try {             
            SmbFile smbFile = new SmbFile(path, testCtx);
            SmbFileOutputStream smbfos = new SmbFileOutputStream(smbFile);
            try {
                IOUtils.copy(winfis, smbfos);
            } catch (IOException ex) {
                ex.printStackTrace();
            } finally {    
                try {
                    smbfos.close();
                } catch (IOException ex) {
                     ex.printStackTrace();
                }
            }
        } catch (MalformedURLException ex) {
            ex.printStackTrace();
        }
    } catch (CIFSException ex) {
        ex.printStackTrace();
    } finally {
        try {
            winfis.close();
        } catch (IOException ex) {
             ex.printStackTrace();
        }
    }
} catch (FileNotFoundException ex) {
    ex.printStackTrace();
}

所需的库（依赖项）：

• JCIFS Samba 协议： jcifs-2.1.34.jar（SMB2（2.02 协议级别）支持，部分 SMB3 支持）
• Bouncy Castle 提供程序1.74：bcprov-jdk18on-1.74.jar

Answer 3

/** You can simply use this util class for read write operations. **/

import java.io.IOException;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.UnknownHostException;
import java.nio.charset.StandardCharsets;

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

public class NDMUtil {

public static void writeToNDM(String userName, String password, String domain, String sharedPath,
        String textToWrite) throws MalformedURLException, SmbException, UnknownHostException, IOException {
    NtlmPasswordAuthentication authentication = new NtlmPasswordAuthentication(domain, userName, password);
    try (OutputStream out = new SmbFileOutputStream(new SmbFile(sharedPath, authentication))) {
        byte[] bytesToWrite = textToWrite.getBytes();
        if (out != null && bytesToWrite != null && bytesToWrite.length > 0) {
            out.write(bytesToWrite);
        }
    }
    ;
}

public static String readFromNDM(String userName, String password, String domain, String sharedPath)
        throws MalformedURLException, SmbException, IOException {
    NtlmPasswordAuthentication authentication = new NtlmPasswordAuthentication(domain, userName, password);
    String fileContent = IOUtil.toString(new SmbFileInputStream(new SmbFile(sharedPath, authentication)),
            StandardCharsets.UTF_8.name());
    System.out.println(fileContent);
    return fileContent;
}

}