java上传、下载、删除ftp文件

一共三个类，一个工具类Ftputil.，一个实体类Kmconfig。一个测试类Test

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Ftputil类---------------

package ftpDemo;import java.io.DataOutputStream;import java.io.InputStream;import java.io.OutputStream;import sun.net.TelnetInputStream;import sun.net.TelnetOutputStream;import sun.net.ftp.FtpClient;public class ftpUtil {// 上传文件至FTP通用方法public static void upLoadFileFtp(KmConfig kmConfig,InputStream is, String fileName){try {String ftpHost = kmConfig.getFtpHost();int port = kmConfig.getFtpPort();String userName = kmConfig.getFtpUser();String passWord = kmConfig.getFtpPassword();String path = kmConfig.getFtpPath();FtpClient ftpClient = new FtpClient(ftpHost, port);// ftpHost为FTP服务器的IP地址，port为FTP服务器的登陆端口,ftpHost为String型,port为int型。ftpClient.login(userName, passWord);// userName、passWord分别为FTP服务器的登陆用户名和密码ftpClient.binary();ftpClient.cd(path);// path为FTP服务器上保存上传文件的路径。TelnetOutputStream telnetOut = ftpClient.put(fileName);// fileName为上传的文件名DataOutputStream dataOut = new DataOutputStream(telnetOut);byte buffer[] = new byte[1024 * 1024];int count = 0;while ((count = is.read(buffer)) != -1) {dataOut.write(buffer, 0, count);}telnetOut.close();dataOut.close();ftpClient.closeServer();} catch (Exception e) {System.out.println("上传文件失败！请检查系统FTP设置,并确认FTP服务启动");}}// 删除文件至FTP通用方法public static void deleteFileFtp(KmConfig kmConfig,String fileName){try {String ftpHost = kmConfig.getFtpHost();int port = kmConfig.getFtpPort();String userName = kmConfig.getFtpUser();String passWord = kmConfig.getFtpPassword();String path = kmConfig.getFtpPath();FtpClient ftpClient = new FtpClient(ftpHost, port);// ftpHost为FTP服务器的IP地址，port为FTP服务器的登陆端口,ftpHost为String型,port为int型。ftpClient.login(userName, passWord);// userName、passWord分别为FTP服务器的登陆用户名和密码ftpClient.binary();ftpClient.cd(path);// path为FTP服务器上保存上传文件的路径。try {ftpClient.sendServer("dele " + fileName + "\r\n");} catch (Exception e) {System.out.println("删除文件失败！请检查系统FTP设置,并确认FTP服务启动");}ftpClient.closeServer();} catch (Exception e) {System.out.println("删除文件失败！");}}// 下载ftp文件public static void downloadFileFtp(KmConfig kmConfig,String fileName, String clientFileName, OutputStream outputStream){try {String ftpHost = kmConfig.getFtpHost();int port = kmConfig.getFtpPort();String userName = kmConfig.getFtpUser();String passWord = kmConfig.getFtpPassword();String path = kmConfig.getFtpPath();FtpClient ftpClient = new FtpClient(ftpHost, port);// ftpHost为FTP服务器的IP地址，port为FTP服务器的登陆端口,ftpHost为String型,port为int型。ftpClient.login(userName, passWord);// userName、passWord分别为FTP服务器的登陆用户名和密码ftpClient.binary();ftpClient.cd(path);// path为FTP服务器上保存上传文件的路径。try {TelnetInputStream in = ftpClient.get(fileName);byte[] bytes = new byte[1024];int cnt=0;while ((cnt=in.read(bytes,0,bytes.length)) != -1) {outputStream.write(bytes, 0, cnt);}outputStream.close();in.close();} catch (Exception e) {ftpClient.closeServer();e.printStackTrace();}ftpClient.closeServer();} catch (Exception e) {System.out.println("下载文件失败！请检查系统FTP设置,并确认FTP服务启动");}} //在ftp服务器上穿件文件夹           public boolean createDir(String path,FtpClient ftpClient) throws Exception{                           //进入到home文件夹下               ftpClient.cd("/home");              //创建远程文件夹               //远程命令包括              //USER    PORT    RETR    ALLO    DELE    SITE    XMKD    CDUP    FEAT<br>   //          PASS    PASV    STOR    REST    CWD     STAT    RMD     XCUP    OPTS<br>   //          ACCT    TYPE    APPE    RNFR    XCWD    HELP    XRMD    STOU    AUTH<br>   //          REIN    STRU    SMNT    RNTO    LIST    NOOP    PWD     SIZE    PBSZ<br>   //          QUIT    MODE    SYST    ABOR    NLST    MKD     XPWD    MDTM    PROT<br>   //               在服务器上执行命令,如果用sendServer来执行远程命令(不能执行本地FTP命令)的话，所有FTP命令都要加上/r/n<br>   //                    ftpclient.sendServer("XMKD /test/bb/r/n"); //执行服务器上的FTP命令<br>   //                    ftpclient.readServerResponse一定要在sendServer后调用<br>   //                    nameList("/test")获取指目录下的文件列表<br>   //                    XMKD建立目录，当目录存在的情况下再次创建目录时报错<br>   //                    XRMD删除目录<br>   //                    DELE删除文件<br>              //通过远程命令 穿件一个files文件夹               ftpClient.sendServer("MKD "+ path + "\r\n");              //这个方法必须在 这两个方法中间调用 否则 命令不管用               ftpClient.binary();              ftpClient.readServerResponse();                            return false;          }  /**   * 检查文件夹是否存在   * @param dir   * @param ftpClient   * @return   */ public boolean isDirExist(String dir, FtpClient ftpClient) {   try {    ftpClient.cd(dir);   } catch (Exception e) {    return false;   }   return true; } }

 

 

Kmconfig类---------------

package ftpDemo;public class KmConfig {//主机ipprivate String FtpHost = "";//端口号private int FtpPort;//ftp用户名private String FtpUser = "";//ftp密码private String FtpPassword = "";//ftp中的目录private String FtpPath = "";public String getFtpHost() {return FtpHost;}public void setFtpHost(String ftpHost) {FtpHost = ftpHost;}public int getFtpPort() {return FtpPort;}public void setFtpPort(int ftpPort) {FtpPort = ftpPort;}public String getFtpUser() {return FtpUser;}public void setFtpUser(String ftpUser) {FtpUser = ftpUser;}public String getFtpPassword() {return FtpPassword;}public void setFtpPassword(String ftpPassword) {FtpPassword = ftpPassword;}public String getFtpPath() {return FtpPath;}public void setFtpPath(String ftpPath) {FtpPath = ftpPath;}}

 

Test类---------------

package ftpDemo;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;public class Test {public static void main(String[] args) {//设置ftpKmConfig km = new KmConfig();km.setFtpHost("172.20.32.48");km.setFtpPort(21);km.setFtpUser("test");km.setFtpPassword("111111");km.setFtpPath("KM");//上传到ftpftpUtil util=new ftpUtil();File file = new File("F:/文章2.jpg");InputStream in;try {in = new FileInputStream(file);util.upLoadFileFtp(km, in, "更改后的名字.jpg");} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}//页面访问: ftp://账户:密码@ip地址:端口号/文件夹目录///  ftp://test:111111@222.22.22.11:21/image/}}