java - JCIFS - 连接中断

Question

我需要连接到 UNC“目录”并在该目录中创建一个文件。我在 stackoverflow 上找到了这个条目:access to file using Java with Samba JCIFS .一件好事是它在我的系统上运行良好，但是当我将程序放到服务器上时，出现以下异常:

Exception in thread "main" jcifs.smb.SmbException: Failed to connect: <serverName>
jcifs.util.transport.TransportException: Connection in error
jcifs.util.transport.TransportException
java.net.ConnectException: Connection timed out: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(Unknown Source)
    at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at jcifs.smb.SmbTransport.ssn139(SmbTransport.java:196)
    at jcifs.smb.SmbTransport.negotiate(SmbTransport.java:249)
    at jcifs.smb.SmbTransport.doConnect(SmbTransport.java:322)
    at jcifs.util.transport.Transport.run(Transport.java:241)
    at java.lang.Thread.run(Unknown Source)
    at jcifs.util.transport.Transport.run(Transport.java:258)
    at java.lang.Thread.run(Unknown Source)
    at jcifs.util.transport.Transport.connect(Transport.java:154)
    at jcifs.smb.SmbTransport.connect(SmbTransport.java:307)
    at jcifs.smb.SmbTree.treeConnect(SmbTree.java:156)
    at jcifs.smb.SmbFile.doConnect(SmbFile.java:911)
    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.SmbFileOutputStream.<init>(SmbFileOutputStream.java:142)
    at jcifs.smb.SmbFileOutputStream.<init>(SmbFileOutputStream.java:97)
    at jcifs.smb.SmbFileOutputStream.<init>(SmbFileOutputStream.java:67)
    at path.unc.TestUNC.main(TestUNC.java:79)
    at jcifs.smb.SmbTransport.connect(SmbTransport.java:309)
    at jcifs.smb.SmbTree.treeConnect(SmbTree.java:156)
    at jcifs.smb.SmbFile.doConnect(SmbFile.java:911)
    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.SmbFileOutputStream.<init>(SmbFileOutputStream.java:142)
    at jcifs.smb.SmbFileOutputStream.<init>(SmbFileOutputStream.java:97)
    at jcifs.smb.SmbFileOutputStream.<init>(SmbFileOutputStream.java:67)
    at path.unc.TestUNC.main(TestUNC.java:79)

我创建了以下代码:

    //... read user, pw and uncPath from console
    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("", user, pw);

    SmbFile dir = new SmbFile(uncPath, auth);

    if (dir.isDirectory()) {
        writer.println(uncPath + " is a directory");
    }

    uncPath = uncPath + "/test.txt";

    writer.println("full path = '" + uncPath + "'");

    SmbFile smbFile = new SmbFile(uncPath, auth);

    writer.println(smbFile.getPermission());

    SmbFileOutputStream uncOut = new SmbFileOutputStream(smbFile);
    PrintWriter uncPrint = new PrintWriter(uncOut);
    uncPrint.println("text from " + TestUNC.class);
    uncPrint.flush();
    // close stream

这会在控制台上创建以下输出:

    smb://<serverName>/myDirectory is a directory
    full path = 'smb://<serverName>/myDirectory/test.txt'

    (java.security.AllPermission <all permissions> <all actions>)

所以它可以访问目录，也有所有的权限。

正如我所说，在我的本地机器上运行良好(一台 Win 7 机器)。服务器似乎无法创建文件。但是可以登录查看路径是否为目录，服务器为Win 2008机器。

命令 net use I: \\<serverName>\myDirectory <pw> /user:<domain\user> 在两台机器上都有一个有趣的地方工作正常，并允许在其中创建文件。

我的想法是服务器的响应时间太长，jcifs 将其关闭，因此我更改了超时值:

    System.setProperty("jcifs.smb.client.responseTimeout", "120000"); // default: 30000 millisec.
    System.setProperty("jcifs.smb.client.soTimeout", "140000"); // default: 35000 millisec.

Answer 1

尝试使用 IP 地址代替服务器名称。我有同样的问题并使用 IP 地址得到修复

full path = 'smb://<IPaddress>/myDirectory/test.txt'