要将FTP服务器上的ZIP文件中的数据导入到C#中的数据库,你需要完成以下几个步骤:
使用C#的System.Net.FtpWebRequest
类来连接到FTP服务器并下载ZIP文件。
using System;
using System.IO;
using System.Net;
public class FtpHelper
{
public static void DownloadFile(string ftpUrl, string username, string password, string localPath)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpUrl);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(username, password);
using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
using (Stream responseStream = response.GetResponseStream())
using (FileStream fileStream = new FileStream(localPath, FileMode.Create))
{
responseStream.CopyTo(fileStream);
}
}
}
使用System.IO.Compression.ZipArchive
类来解压ZIP文件。
using System.IO;
using System.IO.Compression;
public class ZipHelper
{
public static void ExtractZipFile(string zipFilePath, string extractPath)
{
ZipArchive archive = ZipFile.OpenRead(zipFilePath);
foreach (ZipArchiveEntry entry in archive.Entries)
{
string entryPath = Path.Combine(extractPath, entry.FullName);
if (entry.Name != "")
{
if (entry.isDirectory)
{
Directory.CreateDirectory(entryPath);
}
else
{
entry.Open().CopyTo(new FileStream(entryPath, FileMode.Create));
}
}
}
}
}
假设你有一个CSV文件,可以使用System.Data.SqlClient
类来将数据导入到SQL Server数据库。
using System;
using System.Data;
using System.Data.SqlClient;
public class DatabaseHelper
{
public static void ImportCsvToDatabase(string csvFilePath, string connectionString, string tableName)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection))
{
bulkCopy.DestinationTableName = tableName;
using (StreamReader reader = new StreamReader(csvFilePath))
{
string header = reader.ReadLine();
string[] columns = header.Split(',');
DataTable table = new DataTable();
foreach (string column in columns)
{
table.Columns.Add(column);
}
string line;
while ((line = reader.ReadLine()) != null)
{
string[] values = line.Split(',');
DataRow row = table.NewRow();
for (int i = 0; i < columns.Length; i++)
{
row[columns[i]] = values[i];
}
table.Rows.Add(row);
}
bulkCopy.WriteToServer(table);
}
}
}
}
}
通过上述步骤,你可以实现从FTP服务器下载ZIP文件,解压文件,并将数据导入到C#中的数据库。每个步骤都有详细的代码示例和参考链接,帮助你更好地理解和实现这一过程。
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