逻辑：
2.服务端接受客户端的连接，把流转化为字符串，进行一个目录的遍历，查找是否存在需要的文件，若未找到，则输出未找到，若找到，则将文件转化为流，传给客户端
3.客户端准备接受，将服务端传过来的流转化为文件，存储下载。
4，至此，完成一个简单的客户端与服务端传输文件的小栗子~
Client.Java
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package com.ysk;import java.io.BufferedReader;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;import java.net.UnknownHostException;public class Client { public static void main(String[] args) { try { OutputStream os = socket.getOutputStream();// 字节输出流 PrintWriter pw = new PrintWriter(os); pw.write("aa.txt");//输入需要搜索的文件名 pw.flush(); socket.shutdownOutput(); BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream())); String a = ""; String temp = ""; while ((temp = in.readLine()) != null) { a += temp; } PrintWriter out = new PrintWriter(new OutputStreamWriter(new FileOutputStream("src\\asb.txt"))); out.write(a); out.flush(); out.close(); } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { } }} |
Server.java
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package com.ysk;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;public class Server { static ServerSocket serverSocket; public static void main(String[] args) { try { serverSocket = new ServerSocket(5555); System.out.println("***服务器即将启动，等待客户端的连接***"); Socket socket = serverSocket.accept(); BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream())); String file = br.readLine(); findFile("src", file); if (result) { System.out.println("已找到" + file); File f = new File(file);// File copyfile = new File("src\\file", "bb.txt"); BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(filepath + file))); System.out.println(filepath + file); String a = ""; String temp = ""; while ((temp = in.readLine()) != null) { a += temp; } PrintWriter out = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); out.write(a); out.flush(); socket.shutdownOutput(); } else { System.out.println("未找到文件"); } } catch (IOException e) { e.printStackTrace(); } } |
需自备aa.txt，这种资源文件，以便测试。
总结
以上所述是小编给大家介绍的使用socket进行服务端与客户端传文件的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/ysk_xh_521/article/details/77356022
