详解JAVA中使用FTPClient工具类上传下载
详解JAVA中使用FTPClient工具类上传下载
在Java程序中，经常需要和FTP打交道，比如向FTP服务器上传文件、下载文件。本文简单介绍如何利用jakartacommons中的FTPClient（在commons-net包中）实现上传下载文件。
1、写一个javabean文件，描述ftp上传或下载的信息
实例代码：
publicclassFtpUseBean{
privateStringhost;
privateIntegerport;
privateStringuserName;
privateStringpassword;
privateStringftpSeperator;
privateStringftpPath="";
privateintrepeatTime=0;//连接ftp服务器的次数
publicStringgetHost(){
returnhost;
}
publicvoidsetHost(Stringhost){
this.host=host;
}
publicIntegergetPort(){
returnport;
}
publicvoidsetPort(Integerport){
this.port=port;
}
publicStringgetUserName(){
returnuserName;
}
publicvoidsetUserName(StringuserName){
this.userName=userName;
}
publicStringgetPassword(){
returnpassword;
}
publicvoidsetPassword(Stringpassword){
this.password=password;
}
publicvoidsetFtpSeperator(StringftpSeperator){
this.ftpSeperator=ftpSeperator;
}
publicStringgetFtpSeperator(){
returnftpSeperator;
}
publicvoidsetFtpPath(StringftpPath){
if(ftpPath!=null)
this.ftpPath=ftpPath;
}
publicStringgetFtpPath(){
returnftpPath;
}
publicvoidsetRepeatTime(intrepeatTime){
if(repeatTime>0)
this.repeatTime=repeatTime;
}
publicintgetRepeatTime(){
returnrepeatTime;
}
/**
*takeanexample:
*ftp://userName:password@ip:port/ftpPath/
*@return
*/
publicStringgetFTPURL(){
StringBufferbuf=newStringBuffer();
buf.append("ftp://");
buf.append(getUserName());
buf.append(":");
buf.append(getPassword());
buf.append("@");
buf.append(getHost());
buf.append(":");
buf.append(getPort());
buf.append("/");
buf.append(getFtpPath());
returnbuf.toString();
}
}
2、导入包commons-net-1.4.1.jar
packagecom.util;
importjava.io.BufferedReader;
importjava.io.ByteArrayOutputStream;
importjava.io.DataOutputStream;
importjava.io.File;
importjava.io.FileOutputStream;
importjava.io.IOException;
importjava.io.InputStream;
importjava.io.InputStreamReader;
importjava.io.OutputStream;
importjava.net.SocketException;
importjava.net.URL;
importjava.net.URLConnection;
importorg.apache.commons.logging.Log;
importorg.apache.commons.logging.LogFactory;
importorg.apache.commons.net.ftp.FTP;
importorg.apache.commons.net.ftp.FTPClient;
importorg.apache.commons.net.ftp.FTPClientConfig;
importorg.apache.commons.net.ftp.FTPFile;
importcom.bean.FtpUseBean;
publicclassFtpUtilextendsFTPClient{
privatestaticLoglog=LogFactory.getLog(FtpUtil.class);
privateFtpUseBeanftpUseBean;
//获取目标路径下的文件属性信息，主要是获取文件的size
privateFTPFile[]files;
publicFtpUseBeangetFtpUseBean(){
returnftpUseBean;
}
publicFtpUtil(){
super();
}
publicvoidsetFtpUseBean(FtpUseBeanftpUseBean){
this.ftpUseBean=ftpUseBean;
}
publicbooleanftpLogin(){
booleanisLogined=false;
try{
log.debug("ftploginstart...");
intrepeatTime=ftpUseBean.getRepeatTime();
for(inti=0;iif(null!=ftp)
//ftp.disconnect();
//}catch(Exceptione){
}
}
}
}
以上就是JAVAFTPClient工具类的上传和下载的实例详解，如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！