使用带有 Samba JCIFS 的 Java 访问文件

protocols java jcifs smb

2022-09-01 18:33:52

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，让我们称之为 server.unv.edu，工作组是WKGRP。

此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);
}

和

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;
}
}

但这行不通。我收到以下错误：

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)

任何人都可以给我一个建议或代码的正确性，以帮助我访问该文件吗？

答案 1

你正在使这比它应该的更难。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此用户具有写入权限。

http://jcifs.samba.org/ 下载jar文件（只有一个jar文件）
复制并粘贴以下代码以及您的用户名，密码和共享文件夹的信息，这就是您所需要的

我在Linux上运行这个，并希望写入Windows框，因此如果您想创建一个共享文件夹，如果您不知道如何在Windows上创建共享文件夹，请将共享文件夹名称放在下面的变量中...一如既往地使用谷歌

    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 !");

答案 2

/** 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;
}

}