8d73e917
 陈威
初始化提交
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package cn.keking.utils;
import cn.keking.config.ConfigConstants;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.nio.charset.StandardCharsets;
/**
* @auther: chenjh
* @since: 2019/6/18 14:36
*/
public class FtpUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(FtpUtils.class);
public static FTPClient connect(String host, int port, String username, String password, String controlEncoding) throws IOException {
FTPClient ftpClient = new FTPClient();
ftpClient.connect(host, port);
if (!StringUtils.isEmpty(username) && !StringUtils.isEmpty(password)) {
ftpClient.login(username, password);
}
int reply = ftpClient.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftpClient.disconnect();
}
ftpClient.setControlEncoding(controlEncoding);
ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
return ftpClient;
}
public static void download(String ftpUrl, String localFilePath, String ftpUsername, String ftpPassword, String ftpControlEncoding) throws IOException {
String username = StringUtils.isEmpty(ftpUsername) ? ConfigConstants.getFtpUsername() : ftpUsername;
String password = StringUtils.isEmpty(ftpPassword) ? ConfigConstants.getFtpPassword() : ftpPassword;
String controlEncoding = StringUtils.isEmpty(ftpControlEncoding) ? ConfigConstants.getFtpControlEncoding() : ftpControlEncoding;
URL url = new URL(ftpUrl);
String host = url.getHost();
int port = (url.getPort() == -1) ? url.getDefaultPort() : url.getPort();
String remoteFilePath = url.getPath();
LOGGER.debug("FTP connection url:{}, username:{}, password:{}, controlEncoding:{}, localFilePath:{}", ftpUrl, username, password, controlEncoding, localFilePath);
FTPClient ftpClient = connect(host, port, username, password, controlEncoding);
OutputStream outputStream = new FileOutputStream(localFilePath);
ftpClient.enterLocalPassiveMode();
boolean downloadResult = ftpClient.retrieveFile(new String(remoteFilePath.getBytes(controlEncoding), StandardCharsets.ISO_8859_1), outputStream);
LOGGER.debug("FTP download result {}", downloadResult);
outputStream.flush();
outputStream.close();
ftpClient.logout();
ftpClient.disconnect();
}
}
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