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1 import java.awt.*;
2import java.awt.event.*;
3import javax.swing.*;
4import javax.swing.event.*;
5import java.io.*;
6import java.net.*;
7import javax.swing.filechooser.FileFilter;
8
9public class Chooser extends JLabel
10   {
11 private JButton openButton,saveButton;
12JFileChooser fc;
13String fileName;
14int result;
15Chooser()
16  {
17setLayout(new GridLayout());
18JButton openButton=new JButton("Open");
19openButton.addActionListener(new openFile());
20JButton saveButton=new JButton("Save");
21saveButton.addActionListener(new saveFile());
22add(openButton);
23add(saveButton);
24 }
25
26class openFile implements ActionListener
27{
28public void actionPerformed(ActionEvent e)
29{
30fc = new JFileChooser();
31result = fc.showOpenDialog(Chooser.this);
32File file = fc.getSelectedFile();
33if(file!=null && result==JFileChooser.APPROVE_OPTION)
34{
35fileName = file.getAbsolutePath();
36System.out.println("You chose to open this file: " +fileName);
37try
38{
39File file1=new File(fileName);
40FileInputStream fos=new FileInputStream(file1);
41//创建网络服务器接受客户请求
42ServerSocket ss=new ServerSocket(3108);
43Socket client=ss.accept();
44//创建网络输出流并提供数据包装器
45OutputStream netOut=client.getOutputStream();
46OutputStream doc=new DataOutputStream(new BufferedOutputStream(netOut));
47//创建文件读取缓冲区
48byte[] buf=new byte[2048];
49int num=fos.read(buf);
50while(num!=(-1))
51{ //是否读完文件
52doc.write(buf,0,num);//把文件数据写出网络缓冲区
53doc.flush();//刷新缓冲区把数据写往客户端
54num=fos.read(buf);//继续从文件中读取数据
55}
56fos.close();
57doc.close();
58}
59catch(Exception ex)
60{
61System.out.println(ex);
62}
63}
64if(result == JFileChooser.CANCEL_OPTION)
65{
66}
67
68}
69}
70class saveFile implements ActionListener
71{
72public void actionPerformed(ActionEvent e)
73{
74fc = new JFileChooser();
75result = fc.showSaveDialog(Chooser.this);
76File file1 = fc.getSelectedFile();
77fileName = file1.getAbsolutePath();
78System.out.println("fileName:"+fileName);
79if (result == JFileChooser.APPROVE_OPTION)
80{
81try
82{
83File file2=new File(fileName);
84file2.createNewFile();
85RandomAccessFile raf=new RandomAccessFile(file2,"rw");
86// 通过Socket连接文件服务器
87Socket server=new Socket(InetAddress.getLocalHost(),3108);
88//创建网络接受流接受服务器文件数据
89InputStream netIn=server.getInputStream();
90InputStream in=new DataInputStream(new BufferedInputStream(netIn));
91//创建缓冲区缓冲网络数据
92byte[] buf=new byte[2048];
93int num=in.read(buf);
94System.out.println("in.read(buf)´length="+num);
95while(num!=(-1))
96{//是否读完所有数据
97raf.write(buf,0,num);//将数据写往文件
98raf.skipBytes(num);//顺序写文件字节
99num=in.read(buf);//继续从网络中读取文件
100}
101in.close();
102raf.close();
103}
104catch(Exception ex)
105{
106System.out.println(ex);
107}
108
109}
110if(result == JFileChooser.CANCEL_OPTION)
111{
112}
113}
114}
115public static void main(String args[])
116{
117JFrame f=new JFrame();
118f.getContentPane().add(new Chooser());
119f.setSize(250, 110);
120f.setResizable(false);
121f.setDefaultCloseOperation(3);
122f.setVisible(true);
123}
124 }
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