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

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); } }