java ftp上传和下载
首先，建3个接口
FTPOperate.java:
public interface FTPOperate
{
public void execute(FTPBean entity);
}
FTPProxy.java:
public interface FTPProxy
{
public void connection();
public abstract void upload();
public abstract void download();
public void setEntity(FTPBean entity);
}
FTPBean.java:
public interface FTPBean
{
public abstract String getServerIP();
public abstract void setServerIP(String serverIP);
public abstract String getUser();
public abstract void setUser(String user);
public abstract String getPassword();
public abstract void setPassword(String password);
public abstract String getSrcFile();
public abstract void setSrcFile(String srcFile);
public abstract String getTargetFile();
public abstract void setTargetFile(String targetFile);
public abstract String getFtpPath();
public abstract void setFtpPath(String ftpPath);
}
然后分别实现这两个接口：
FTPProxyImpl.java:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.SocketException;
import org.apache.commons.net.ftp.FTPClient;
import com.kt.iptv.common.ftp.FTPBean;
import com.kt.iptv.common.ftp.FTPProxy;
public class FTPProxyImpl implements FTPProxy
{
public FTPProxyImpl()
{
super();
ftpClient = new FTPClient();
}
public FTPProxyImpl(FTPBean entity)
{
this();
this.entity = entity;
}
private FTPBean entity;
private FTPClient ftpClient;
public void connection()
{
try
{
ftpClient.connect(entity.getServerIP());
ftpClient.login(entity.getUser(), entity.getPassword());
} catch (SocketException e)
{
e.printStackTrace();
} catch (IOException e)
{
e.printStackTrace();
}
}
public void download()
{
FileOutputStream fos = null;
try
{
String remoteFile = entity.getSrcFile();
String remoteFileName = "";
if (0 == remoteFile.lastIndexOf
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package test;
/**
*
* @author openpk
*/
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
public class Main {
public static void main(String[] args) {
// 线程池
ExecutorService exec = Executors ......
=====suppose such a method:
public static void openFile(String fileName, PrintWriter stream) throws FileNotFoundException
{
stream = new PrintWriter(fileName);
}
=====then we want to use it this way:
PrintWriter toFile = null;
try
{
openFile("data.txt", t ......
1、语法：必须比较熟悉，在写代码的时候IDE的编辑器对某一行报错应该能够根据报错信息知道是什么样的语法错误并且知道任何修正。
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import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* 用于的使 Browser 不缓存页面的过滤器
*/
public class ForceNoCacheFilter
implements Filter
{
publi ......
