Java文件操作大全（十）
73.FTP下载
/*
import sun.net.ftp.FtpClient;
import java.io.*;
import sun.net.*;
*/
//如果文件在某个目录下，则加入fc.cd("foodir");
//比如要下载ftp://ftp.xx.com/index.html则：
try
{
FtpClient fc=new FtpClient("ftp.xx.com");
fc.login("username","888888");
int ch;
File fi = new File("c:\\index.html");
RandomAccessFile getFile = new RandomAccessFile(fi,"rw");
getFile.seek(0);
TelnetInputStream fget=fc.get("index.html");
DataInputStream puts = new DataInputStream(fget);
while ((ch = puts.read()) >= 0) {
getFile.write(ch);
}
fget.close();
getFile.close();
fc.closeServer();
}
catch (IOException ex)
{
ex.printStackTrace();
}
74.写图像到剪切板 setClipboardImage
/*
import java.awt.*;
import java.awt.datatransfer.*;
import java.io.*;
*/
private final Image image;
Transferable trans = new Transferable() {
public DataFlavor[] getTransferDataFlavors() {
return new DataFlavor[] { DataFlavor.imageFlavor };
}
public boolean isDataFlavorSupported(DataFlavor flavor) {
return DataFlavor.imageFlavor.equals(flavor);
}
public Object getTransferData(DataFlavor flavor)
throws UnsupportedFlavorException, IOException {
if (isDataFlavorSupported(flavor))
return image;
throw new UnsupportedFlavorException(flavor);
}
};
Toolkit.getDefaultToolkit().getSystemClipboard().setContents(trans,
null);
75.从剪贴板复制图像到窗体
76.删除文件夹下的所有文件且不删除文件夹下的文件夹
//import java.io.*;
//import java.util.*;
LinkedList<String> folderLi
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创建一个文件temp，同时在temp 目录下创建一个outpath.xls
写操作
package com;
import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import jxl.Workbook;
import jxl.format.UnderlineStyle;
import jxl.write.DateTime;
import jxl.write.Label;
import jxl.write.Number ......
1.创建文件夹
//import java.io.*;
File myFolderPath = new File(%%1);
try {
if (!myFolderPath.exists()) {
myFolderPath.mkdir();
}
}
catch (Exception e) {
System.out.println("新建目录操作出错");
e.printStackTra ......
39.写入XML数据库
//import java.io.*;
//import javax.xml.parsers.*;
//import org.xml.sax.*;
//import org.w3c.dom.*;
//import javax.xml.transform.*;
//import javax.xml.transform.dom.*;
//import javax.xml.transform.stream.*;
private Document ......
49.文本查找替换
//import java.nio.*;
String s1=%%1;
String s2=%%2;
String s3=%%3;
int pos=%%4;
/*变量i和j分别表示主串和模式串中当前字符串的位置，k表示匹配次数*/
int i,j,k=0;
i = pos;
j = 0;
//将s ......
61.文件夹移动到整合操作
/*
import java.io.*;
import java.util.*;
import javax.swing.*;
*/
JFileChooser Jfc = new JFileChooser("请选择源路径"); // 建立选择档案对话
方块盒 Jfc
if (!Jfc.isFileSelectionEnabled()) {
return;
} ......
