Java进行FTP操作
Java进行FTP操作
Java进行FTP操作,采用的是Apache的FTPClient操作,需要引入commons-net包
- import java.io.ByteArrayInputStream;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.net.SocketException;
- import java.text.SimpleDateFormat;
- import java.util.Date;
- import org.apache.commons.io.IOUtils;
- import org.apache.commons.net.ftp.FTPClient;
- /**
- * class name:FTPFileTransmit <BR>
- * class description: please write your description <BR>
- * Remark: <BR>
- * @version 1.00 2011-8-9
- */
- public class FTPFileTransmit {
- private String ftpPath;
- private String ftpName;
- private String ftpPassword;
- private String ftpServerIP;
- public FTPFileTransmit() {
- this.ftpPath = "xxx/xxx/";
- this.ftpName = "name";
- this.ftpPassword = "pass";
- this.ftpServerIP = "192.168.0.xx";
- }
- /**
- * Method name: saveInFTP <BR>
- * Description: 把文件存储在FTP上 <BR>
- * Remark: <BR>
- * @param FolderName 示例"xxx/xxx/"
- * @param FileName 示例"thefilename"
- * @param data byte[]数组
- * @return boolean<BR>
- */
- public boolean saveInFTP (String FolderName, String FileName, byte[] data) {
- boolean flag = false;
- // 创建FTP客户端
- FTPClient ftpClient = new FTPClient();
- // 输入流用于读取文件
- // FileInputStream fis = null;
- ByteArrayInputStream bis = null;
- try {
- // 如果FolderName 和 FileName都不符合基本要求, 那么就没有必要进行ftp操作
- if (FolderName != null
- && FolderName.compareTo("") != 0
- && FileName != null
- && FileName.compareTo("") != 0) {
- // 建立FTP连接
- ftpClient.connect(this.ftpServerIP);
- // 如果登录成功后, 才进行创建输入流
- if (ftpClient.login(this.ftpName, this.ftpPassword)) {
- // File srcClientFile = new File("C:/ParseXML.xml");
- // 实例化输入流
- // fis = new FileInputStream(srcClientFile);
- if (ftpClient.changeWorkingDirectory(FolderName)) {
- // 将byte[]写入到输入流中, 实例化
- bis = new ByteArrayInputStream(data);
- // 设置缓冲
- ftpClient.setBufferSize(1024);
- // 设置文件类型(二进制类型)
- if (ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE)) {
- flag = ftpClient.storeFile(FileName, bis);
- }
- }
- }
- }
- } catch (SocketException e) {
- e.printStackTrace();
- flag = false;
- } catch (IOException e) {
- e.printStackTrace();
- flag = false;
- } catch (Exception e) {
- e.printStackTrace();
- flag = false;
- } finally {
- try {
- // 关闭输入流
- IOUtils.closeQuietly(bis);
- // 关闭连接
- ftpClient.disconnect();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- return flag;
- }
- /**
- * Method name: getFromFTP <BR>
- * Description: 从FTP上读取文件 <BR>
- * Remark: <BR>
- * @return boolean<BR>
- */
- public boolean getFromFTP () {
- boolean flag = false;
- // 创建FTP客户端
- FTPClient ftpClient = new FTPClient();
- // 输出流用于输出文件
- FileOutputStream fos = null;
- try {
- // 建立FTP连接
- ftpClient.connect(this.ftpServerIP);
- // 如果登录成功后, 才进行创建输出流
- if (ftpClient.login(this.ftpName, this.ftpPassword)) {
- // FTP文件
- String distinationFile = "/name/xxx/xxx/xxx文件";
- // 实例化输出流
- fos = new FileOutputStream("C:/ParseXML_InFTP.xml");
- // 设置缓冲
- ftpClient.setBufferSize(1024);
- // 设置文件类型(二进制类型)
- if (ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE)) {
- ftpClient.retrieveFile(distinationFile, fos);
- flag = true;
- }
- }
- } catch (SocketException e) {
- e.printStackTrace();
- flag = false;
- } catch (IOException e) {
- e.printStackTrace();
- flag = false;
- } catch (Exception e) {
- e.printStackTrace();
- flag = false;
- } finally {
- try {
- // 关闭输出流
- IOUtils.closeQuietly(fos);
- // 关闭连接
- ftpClient.disconnect();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- return flag;
- }
- public boolean createDirectory() {
- boolean flag = false;
- // 创建FTP客户端
- FTPClient ftpClient = new FTPClient();
- try {
- // 建立FTP连接
- ftpClient.connect(this.ftpServerIP);
- // 如果登录成功后, 才进行操作
- if (ftpClient.login(this.ftpName, this.ftpPassword)) {
- // 切换文件路径, 到FTP上的"NNDD3"文件夹下
- if (this.ftpPath != null && this.ftpPath.compareTo("") != 0
- && ftpClient.changeWorkingDirectory(this.ftpPath)) {
- SimpleDateFormat f = new SimpleDateFormat("yyyyMMdd");
- String time = f.format(new Date());
- String FolderName = time + "_ReTransmit";
- ftpClient.makeDirectory(FolderName);
- flag = true;
- }
- }
- } catch (SocketException e) {
- e.printStackTrace();
- flag = false;
- } catch (IOException e) {
- e.printStackTrace();
- flag = false;
- } catch (Exception e) {
- e.printStackTrace();
- flag = false;
- } finally {
- try {
- // 关闭连接
- ftpClient.disconnect();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- return flag;
- }
- public String[] getAllFolderNames () {
- // 创建FTP客户端
- FTPClient ftpClient = new FTPClient();
- try {
- // 建立FTP连接
- ftpClient.connect(this.ftpServerIP);
- // 如果登录成功后, 才进行操作
- if (ftpClient.login(this.ftpName, this.ftpPassword)) {
- // 切换文件路径, 到FTP上的"NNDD3"文件夹下
- if (this.ftpPath != null && this.ftpPath.compareTo("") != 0
- && ftpClient.changeWorkingDirectory(this.ftpPath)) {
- // 将当前时间减去2天, 删除的是前两天的数据包
- String time = minusTime();
- String[] allNames = ftpClient.listNames();
- String[] temp = new String[allNames.length];
- // 初始化数组
- for (int j = 0; j < allNames.length; j ++) {
- temp[j] = "";
- }
- // 找出要删除文件夹的名称
- for (int i = 0; i < allNames.length; i ++) {
- if (allNames[i].substring(0, 8).compareTo(time) <= 0) {
- temp[i] = allNames[i];
- }
- }
- return temp;
- }
- }
- } catch (SocketException e) {
- e.printStackTrace();
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- // 关闭连接
- ftpClient.disconnect();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- return null;
- }
- /**
- *
- * Method name: minusTime <BR>
- * Description: 获取钱两天的时间,如2011-8-1的前两天就是2011-7-30 <BR>
- * Remark: <BR>
- * @return String<BR>
- */
- private String minusTime() {
- SimpleDateFormat df=new SimpleDateFormat("yyyyMMdd");
- Date d = new Date();
- String timeMinus2 = df.format(new Date(d.getTime() - 2 * 24 * 60 * 60 * 1000));
- return timeMinus2;
- }
- public static void main(String[] args) {
- FTPFileTransmit ftpFileTransmit = new FTPFileTransmit();
- ftpFileTransmit.deleteFoldersInFTP();
- // boolean flag = ftpFileTransmit.createDirectory();
- // if (flag) {
- // System.out.println("****** FTP文件夹创建成功 ******");
- // }
- // String FolderName = ftpFileTransmit.ftpPath + "20110809_ReTransmit/";
- // byte[] data = new byte[1024];
- // for (int i = 0; i < data.length; i ++) {
- // data[i] = 'a';
- // }
- // boolean flag = ftpFileTransmit.saveInFTP(FolderName, "2011080912345678" ,data);
- // if (flag) {
- // System.out.println("****** FTP文件夹创建成功 ******");
- // }
- }
- }
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