package yp;
import java.applet.Applet;
import java.io.File;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;
/**
* 说明：本APPLET只是测试大文件FTP上传可行性
* 至于其他功能比如FTP下载、删除、FTP服务器文件列表可调用ContinueFTP相应功能。
*/
public class FileFtpApplet extends Applet {
/**
* Constructor of the applet.
*
* @exception HeadlessException if GraphicsEnvironment.isHeadless()
* returns true.
*/
/* public FileFtpApplet() throws HeadlessException {
super();
}*/
/**
* Called by the browser or applet viewer to inform
* this applet that it is being reclaimed and that it should destroy
* any resources that it has allocated. The <code>stop</code> method
* will always be called before <code>destroy</code>. <p>
*
* A subclass of <code>Applet</code> should override this method if
* it has any operation that it wants to perform before it is
* destroyed. For example, an applet with threads would use the
* <code>init</code> method to create the threads and the
* <code>destroy</code> method to kill them. <p>
*/
public void destroy() {
// Put your code here
}
/**
* Returns information about this applet. An applet should override
* this method to return a <code>String</code> containing information
* about the author, version, and copyright of the applet. <p>
*
* @return a string containing information about the author, version, and
* copyright of the applet.
*/
public String getAppletInfo() {
return "This is my default applet created by Eclipse";
}
/**
* Called by the browser or applet viewer to inform
* this applet that it has been loaded into the system. It is always
* called before the first time that the <code>start</code> method is
* called. <p>
*
* A subclass of <code>Applet</code> should override this method if
* it has initialization to perform. For example, an applet with
* threads would use the <code>init</code> method to create the
* threads and the <code>destroy</code> method to kill them. <p>
*/
public void init() {
// Put your code here
}
/**
* Called by the browser or applet viewer to inform
* this applet that it should start its execution. It is called after
* the <code>init</code> method and each time the applet is revisited
* in a Web page. <p>
*
* A subclass of <code>Applet</code> should override this method if
* it has any operation that it wants to perform each time the Web
* page containing it is visited. For example, an applet with
* animation might want to use the <code>start</code> method to
* resume animation, and the <code>stop</code> method to suspend the
* animation. <p>
*/
public void start() {
// Put your code here
}
/**
* Called by the browser or applet viewer to inform
* this applet that it should stop its execution. It is called when
* the Web page that contains this applet has been replaced by
* another page, and also just before the applet is to be destroyed. <p>
*
* A subclass of <code>Applet</code> should override this method if
* it has any operation that it wants to perform each time the Web
* page containing it is no longer visible. For example, an applet
* with animation might want to use the <code>start</code> method to
* resume animation, and the <code>stop</code> method to suspend the
* animation. <p>
*/
public void stop() {
// Put your code here
}
private static final long serialVersionUID = 1L;
private FileFtpApplet jFrame = null;
private JButton jFileButton = null;
public FileFtpApplet() {
// TODO Auto-generated constructor stub
jFrame = this;
this.setSize(496, 260);
jFileButton = new JButton("打开文件");
jFrame.add(jFileButton);
jFileButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent e) {
// System.out.println("mouseClicked()"); // TODO
// Auto-generated Event stub mouseClicked()
JFileChooser jfChooser = new JFileChooser("D:\\..\\..");
jfChooser.setDialogTitle("打开并上传文件");
jfChooser.setFileFilter(new FileFilter() {
@Override
public boolean accept(File f) {
if (f.getName().endsWith("dat") || f.isDirectory())
return true;
return false;
}
@Override
public String getDescription() {
// TODO Auto-generated method stub
return "数据文件(*.dat)";
}
});
int result = jfChooser.showOpenDialog(jFrame);
if (result == JFileChooser.APPROVE_OPTION) { // 确认打开
File fileIn = jfChooser.getSelectedFile();
if (fileIn.exists()) {
//JOptionPane.showMessageDialog(jFrame, "OPEN"); // 提示框
ContinueFTP myFtp = new ContinueFTP();
try {
long l1 = System.currentTimeMillis();
System.out.println("begin:"+ l1);
if (myFtp.connect("10.68.7.182", 21, "a", "a")) {
String remotePath = "/";
String remoteFile = myFtp.getRemoteFileName(fileIn.getName());
if (remotePath == null || remotePath.trim().equals(""))
remotePath = "/";
//文件扩展名
String kzNm = "";
if (remoteFile.indexOf(".")>=0)
kzNm = remoteFile.substring(remoteFile.indexOf("."));
String cellCode = "yp";
boolean isSaveFileName = false;
//若不保留原文件，则重新组装远程文件名
if (!isSaveFileName)
remoteFile= cellCode+"_"+System.currentTimeMillis()+kzNm;
//获得远程路径最后一位
String lastStr = remotePath.substring(remotePath.length()-1);
if (lastStr.trim().equals("/"))
remoteFile = remotePath + cellCode + "/" + remoteFile;
else
remoteFile = remotePath + "/" +cellCode + "/" + remoteFile;
myFtp.upload(fileIn, remoteFile);
myFtp.disconnect();
long l2 = System.currentTimeMillis();
System.out.println("end:"+ l2);
System.out.println("remaining:"+(l2-l1));
}
} catch (Exception e1) {
System.out.println("连接FTP出错："+e1.getMessage());
}
} else {
}
} else if (result == JFileChooser.CANCEL_OPTION) {
System.out.println("Cancel button is pushed.");
} else if (result == JFileChooser.ERROR_OPTION) {
System.err.println("Error when select file.");
}
}
}
);
}
}
接下来问题：如何把上述JAVA类编译结果打包成jar文件，方法有很多，比如eclipse导出，java自带命令、winrar工具等。
笔者在打包jar遇到一个问题，只打包上述java类编译结果，报错找不到yp.FileFtpApplet.class，经请教别人采取把所用的commons-net-2.0.jar、commons-net-ftp-2.0.jar解压后与java类编译结果一起打包成一个jar,搞定。
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本文来自: IT知道网(http://www.itwis.com) 详细出处参考：http://www.itwis.com/html/java/javarest/20100127/7319_4.html
2 个解决方案
#1
也不知道现在适用不。applet。导jar包没那么麻烦吧。
#2
applet，早就不接触了，应该用的不多了吧
#1
也不知道现在适用不。applet。导jar包没那么麻烦吧。
#2
applet，早就不接触了，应该用的不多了吧