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基于Java Socket的文件UpLoad代码(完美版)-用递归解决java的目录树遍历

2007-12-12 00:46 836 查看

上次用J2SE写了一个文件夹传递工具,把所有文件都以字节流的形式写入到一个*.txt文件里。结果回到家后,光分目录筛选文件就浪费了我整整一个晚上。痛定思痛,决定还是从程序上来解决问题。

那么所有的磁盘文件目录都是树的结构,而遍历树最好的方法非"深度优先遍历"莫属,其最有效的方法便是使用"递归"进行"深度优先遍历"。

于是经过3个多小时的痛苦挣扎,最终写出了如下的程序,可以完整的读取文件夹里的所有内容,并不改变目录结构的放到Server所指定的路径下面。勘称"完美",嘿嘿。

Server端程序:

import java.io.DataInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.io.File;

public class FileUpLoadProjServer extends Thread {

public FileUpLoadProjServer(Socket s, String c) throws IOException {
}

public void run() {
}

public static void main(String[] args) {
try {
ServerSocket server = new ServerSocket(8110);
Socket connection = null;
while (true) {
try {
connection = server.accept();
DataInputStream in = new DataInputStream(connection
.getInputStream());

String myFile = in.readUTF();
String tempFile = "D"+myFile.substring(myFile.indexOf(":"));
String strDiretory = "";
int tempIndex = 0;
while((tempIndex = tempFile.indexOf("//")) != -1){
strDiretory += tempFile.substring(0,tempIndex+1);
tempFile = tempFile.substring(tempIndex+1);
}
System.out.println(strDiretory+" ,tempFile is :"+tempFile);
File d = new File(strDiretory);
d.mkdirs();

File f = new File(strDiretory+tempFile);
f.createNewFile();

FileOutputStream fos = new FileOutputStream(f);
int ch = 0;

while ((ch = in.read()) != -1) {
System.out.print((char) ch);
fos.write(ch);
}
fos.close();
connection.close();
} catch (IOException ioe) {
System.err.println(ioe);
} finally {
try {
if (connection != null)
connection.close();
} catch (IOException e) {
}
}
}
} catch (IOException ee) {
System.err.println(ee);
}
}
}

Client端程序:

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;

public class FileUpLoadProjClient extends Thread {

private Socket socket;
private DataOutputStream out;
final int port = 8110;
String path = "C://src";
String[] filePathArray = new String[1000];
int fileNum;
InetAddress m_addr;
public FileUpLoadProjClient(InetAddress addr) {
madetree(new File(path));
m_addr = addr;
start();
}

void madetree(File dothis) {
File[] farray = dothis.listFiles();
for (int i = 0; i < farray.length; i++) {
if (farray[i].isFile()){
filePathArray[fileNum++] = farray[i].getAbsolutePath();
}else if(farray[i].isDirectory())
madetree(farray[i]);
}
}

public void run() {
try {
for(int k = 0;k < filePathArray.length&&filePathArray[k]!=null;k++){
System.out.println("The file's absolutePath is :" + filePathArray[k]);
try {
socket = new Socket(m_addr, port);
out = new DataOutputStream(socket.getOutputStream());
} catch (IOException e) {
try {
socket.close();
} catch (IOException e2) {
}
}
FileInputStream fis = new FileInputStream(filePathArray[k]);
int ch = 0;

out.writeUTF(filePathArray[k]);

while ((ch = fis.read()) != -1) {
out.write(ch);
}
fis.close();
socket.close();
}
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}

public static void main(String[] args) throws IOException,
InterruptedException {
InetAddress addr = InetAddress.getByName("127.0.0.1");
new FileUpLoadProjClient(addr);
}

}

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