在java中讀取需要用戶名和密碼的遠程文件

Question

我正在嘗試用 java 讀取遠程文件

File f = new File("//192.168.1.120/home/hustler/file.txt");

遠程機器需要用戶名和密碼才能訪問該文件。

有沒有辦法可以通過java代碼傳遞參數並讀取文件？

Answer 1

package com.eiq;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemOptions;
import org.apache.commons.vfs.Selectors;
import org.apache.commons.vfs.UserAuthenticator;
import org.apache.commons.vfs.VFS;
import org.apache.commons.vfs.auth.StaticUserAuthenticator;
import org.apache.commons.vfs.impl.DefaultFileSystemConfigBuilder;

public class RemoteFileDemo {
    public static void main(String[] args) throws IOException {

        String domain = "hyd\\all";
        String userName = "chiranjeevir";
        String password = "Acvsl@jun2013";
        String remoteFilePath = "\\\\10.0.15.74\\D$\\Suman\\host.txt";


        File f = new File("E:/Suman.txt"); //Takes the default path, else, you can specify the required path
        if (f.exists()) {
            f.delete();
        }
        f.createNewFile();
        FileObject destn = VFS.getManager().resolveFile(f.getAbsolutePath());

        //domain, username, password
        UserAuthenticator auth = new StaticUserAuthenticator(domain, userName, password);
        FileSystemOptions opts = new FileSystemOptions();
        DefaultFileSystemConfigBuilder.getInstance().setUserAuthenticator(opts, auth);


        FileObject fo = VFS.getManager().resolveFile(remoteFilePath, opts);

        System.out.println(fo.exists());

        //fo.createFile();

        destn.copyFrom(fo, Selectors.SELECT_SELF);
        destn.close();

        //InputStream is = new FileInputStream(f);

    }
}

這是一個從遠程機器讀取文件並將其作為文件E:/Suman.txt存儲在本地機器中的程序。

寫文件路徑時要小心，我們必須用$符號替換它，例如: D:\Suman\Boorla\kpl.txt是錯誤的， D$\\Suman\\Boorla\\kpl.txt是正確的.

在上面的程序中，您必須更改遠程機器的域名、用戶名、密碼和文件路徑。 要使用上述程序，我們需要在類路徑中添加以下jar文件。

commons-vfs.jar
commons-logging.jar

Answer 2

jCIFS的另一種選擇，您可以輕松指定身份驗證參數：

NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("domain", "user", "password"); // Authentication info here, domain can be null
try (InputStream is = new SmbFile("smb://192.168.1.120/home/hustler/file.txt", auth).getInputStream()) {
    // Read from 'is' ...
} catch (IOException e) {
    // Handle IOException
}

Answer 3

您也可以嘗試Commons VSF 。 檢查UserAuthenticator

Answer 4

這是我編寫的代碼，它運行良好。

File f=new File("abc.txt"); //Takes the default path, else, you can specify the required path
if(f.exists())
{
    f.delete();
}
f.createNewFile(); 
FileObject destn = VFS.getManager().resolveFile(f.getAbsolutePath());
UserAuthenticator auth = new StaticUserAuthenticator("", "myusername", "secret_password");
FileSystemOptions opts = new FileSystemOptions();

DefaultFileSystemConfigBuilder.getInstance().setUserAuthenticator(opts, auth);
FileObject fo = VFS.getManager().resolveFile("\\\\192.168.0.1\\direcory\\to\\GetData\\sourceFile.txt",opts);
destn.copyFrom(fo,Selectors.SELECT_SELF);
destn.close();

現在您可以使用該文件執行所需的操作。 就像是...

InputStream is = new FileInputStream(f);