我想用java实现一个文件上传的类，但现在如果客户端上传一个文件时，如果在服务器上相同的路径下如果没有该文件则上传不成功，该怎么办啊，希望大大们帮帮忙小弟感激不尽^_^。代码如下：
package com.test.fileup;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import .ftp.FtpClient;
public class ftpUp {
public ftpUp() {
}
public static FtpClient m_client;
public static void disconnect()
{
if (m_client != null)
{
try
{
m_client.closeServer();
}
catch (IOException ex)
{
}
m_client = null;
}
}
public static boolean connect(String sHost, String user,String password ,String sDir)
{
try
{
m_client = new FtpClient(sHost);
m_client.login(user, password);
m_client.cd(sDir);
m_client.binary();
}
catch (Exception ex)
{
return false;
}
return true;
}
public static boolean putFiletoServer(String m_sLocalFile,String m_sHostFile)
{
if (m_sLocalFile.length()==0)
{
return false;
}
byte[] buffer = new byte[10240];
try
{
File f = new File(m_sLocalFile);
int size = (int)f.length();
FileInputStream in = new FileInputStream(m_sLocalFile);
OutputStream out = m_client.put(m_sHostFile);
int counter = 0;
while(true)
{
int bytes = in.read(buffer);
if (bytes < 0)
break;
out.write(buffer, 0, bytes);
counter += bytes;
}
out.close();
in.close();
}
catch (Exception ex)
{
return false;
}
return true;
}
public static boolean putFile(String pathname,String ftpServer, String ftpUser,
String ftpPasswd, String ftpPath)
{
if (!connect(ftpServer,ftpUser,ftpPasswd,ftpPath))
{
return false;
}
int pos = pathname.lastIndexOf("/");
int len = pathname.length();
String filename = pathname.substring(pos+1,len);
if (!putFiletoServer(pathname,filename))
{
return false;
}
disconnect();
return true;
}
}
下面是jsp网页上传页面(ftp服务器在192.168.0.1上)：
无标题文档
if (request.getParameter("action").equals("up")){
try {
if (fileUpload.connect("192.168.0.1","fileftp","123456","I:/fileup")){
out.println("connected");
}
else {
out.println("disconnected");
}
String realpath = new String(request.getParameter("filefu").getBytes("ISO-8859-1"));
if (fileUpload.putFile(""+realpath+"","192.168.0.1","fileftp","123456","I:/fileup")) {
out.println("uploaded");
}
else {
out.println("unuploaded");
}
}
catch (Exception e){
out.print(e);
}
} //action=up
else {
%>
}
%>
