Android：读取远程位置文件夹名称和文件名

Question

我已连接到地址为 192.168.1.254 的服务器，在浏览器中输入此地址时，它会显示可用文件夹列表 我想在我的 android 应用程序中显示文件夹的名称我尝试了以下代码但没有运气。

try {
        SmbFile test = new SmbFile("smb://192.168.1.254");
        SmbFile[] files = test.listFiles();
        if (files != null)
            for (SmbFile s : files) {
                Log.d("debug", s.getName());
            }
    } catch (SmbException e) {
        Log.d("debug", "ERROR");
    } catch (Exception e) {
        Log.d("debug", "ERROR");
    }

我找到here 我也试过了

File f = new File("//192.168.1.254");
//also tried with File f = new File("http//192.168.1.254");
File[] files = f.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
    // Specify the extentions of files to be included.
    return name.endsWith(".bmp") || name.endsWith(".gif");
}
});

 // get names of the files
String[] fileNamesArray = null; 
for (int indx = 0; indx < files.length(); indx++) {
Log.d("name",files[indx].getName());
}

return fileNamesArray; 

Answer 1

一种方法是从服务器下载 html 作为字符串。然后使用

 urlConnection = new URL("your_url").openConnection();
 reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

 while ((String line = reader.readLine()) != null) {
            stringBuilder.append(line).append("\n");
        }
 String your_data = Html.fromHtml(stringBuilder.toString());

这将包含文本格式的表格。您可以对其进行处理以获取所需的数据。

Answer 2

看来您需要 FTP 客户端来获取远程位置的列表文件。例如，尝试使用 ftp4j 库，如 devert 的 official documentation 或 this Android Example 中所述。通过Arun 使用ftp4j 准确列出远程FTP 服务器上的文件，您可以找到here：

    FTPClient client = null;
    try {       // Get the FTP Connection from the
        Utility class client =FTPUtility.connect(ipAddress, userName,
                password);
        if (client != null) {           /* List all file inside the directory */
            FTPFile[] fileArray = client.list();
            System.out.println("List of files...");
            for (int i = 0; i < fileArray.length; i++) {
                FTPFile file = fileArray[i];
                if (file != null) {
                    if (file.TYPE_FILE == FTPFile.TYPE_FILE) // File                    {
                        System.out.println("File Name = " + file.getName() + " ; File Size = " + file.getSize() + " ;Modified Date = " + file.getModifiedDate());
                } else if (file.TYPE_DIRECTORY == FTPFile.TYPE_DIRECTORY) // Directory
                {
                    System.out.println("Directory Name = " + file.getName() + " ; Directory Size = " + file.getSize() + " ;Modified Date = " + file.getModifiedDate());
                } else if (file.TYPE_LINK == FTPFile.TYPE_LINK) // Link
                {
                    System.out.println("Link Name = " + file.getName() + " ;Modified Date = "
                            + file.getModifiedDate());
                }
            }
        }
    }
}   catch(
Exception e)

{
    System.err.println("ERROR : Error in Connecting to Remote Machine... Hence exitting...");       //
    e.printStackTrace();
    System.exit(2);
}

finally

{
    try {
        client.disconnect(true);
    } catch
            (Exception e) {
    }
}

更新

如果“ftp 没有活动端口，而我目前的发现是设备只有 4 个活动端口，即 80,443,3333,8192”似乎文件列表通过 HTTP 发送，您可以通过 HttpURLConnection 下载它并解析响应.像这样的：

HttpURLConnection connection = null;
BufferedReader reader = null;

try {
    URL url = new URL("http://192.168.1.254");

    connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("GET");
    connection.connect();

    int responseCode = connection.getResponseCode();

    InputStream stream = connection.getInputStream();

    reader = new BufferedReader(new InputStreamReader(stream));
    StringBuilder responseStringBuilder = new StringBuilder();

    String line = "";

    while ((line = reader.readLine()) != null) {
        responseStringBuilder .append(line);
        responseStringBuilder .append("\n");
    }

    // Parse responseStringBuilder.toString() (probably as HTML) here:
    ... 

} catch (MalformedURLException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
} finally {
    if (connection != null) {
        connection.disconnect();
    }
    try {
        if (reader != null) {
            reader.close();
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}