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上一篇文章說(shuō)到怎樣寫(xiě)一個(gè)最簡(jiǎn)單的Java Socket通信,但是在上一篇文章中的例子有一個(gè)問(wèn)題就是Server只能接受一個(gè)Client請(qǐng)求,當(dāng)?shù)谝粋€(gè)Client連接后就占據(jù)了這個(gè)位置,后續(xù)Client不能再繼續(xù)連接,所以需要做些改動(dòng),當(dāng)Server沒(méi)接受到一個(gè)Client連接請(qǐng)求之后,都把處理流程放到一個(gè)獨(dú)立的線程里去運(yùn)行,然后等待下一個(gè)Client連接請(qǐng)求,這樣就不會(huì)阻塞Server端接收請(qǐng)求了。每個(gè)獨(dú)立運(yùn)行的程序在使用完Socket對(duì)象之后要將其關(guān)閉。

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具體代碼如下:
- package com.googlecode.garbagecan.test.socket.sample2;
- import java.io.BufferedReader;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.io.PrintWriter;
- import java.net.ServerSocket;
- import java.net.Socket;
- public class MyServer {
- public static void main(String[] args) throws IOException {
- ServerSocket server = new ServerSocket(10000);
- while (true) {
- Socket socket = server.accept();
- invoke(socket);
- }
- }
- private static void invoke(final Socket client) throws IOException {
- new Thread(new Runnable() {
- public void run() {
- BufferedReader in = null;
- PrintWriter out = null;
- try {
- in = new BufferedReader(new InputStreamReader(client.getInputStream()));
- out = new PrintWriter(client.getOutputStream());
- while (true) {
- String msg = in.readLine();
- System.out.println(msg);
- out.println("Server received " + msg);
- out.flush();
- if (msg.equals("bye")) {
- break;
- }
- }
- } catch(IOException ex) {
- ex.printStackTrace();
- } finally {
- try {
- in.close();
- } catch (Exception e) {}
- try {
- out.close();
- } catch (Exception e) {}
- try {
- client.close();
- } catch (Exception e) {}
- }
- }
- }).start();
- }
- }
下面是Client程序代碼:
- package com.googlecode.garbagecan.test.socket.sample2;
- import java.io.BufferedReader;
- import java.io.InputStreamReader;
- import java.io.PrintWriter;
- import java.net.Socket;
- public class MyClient {
- public static void main(String[] args) throws Exception {
- Socket socket = new Socket("localhost", 10000);
- BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
- PrintWriter out = new PrintWriter(socket.getOutputStream());
- BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
- while (true) {
- String msg = reader.readLine();
- out.println(msg);
- out.flush();
- if (msg.equals("bye")) {
- break;
- }
- System.out.println(in.readLine());
- }
- socket.close();
- }
- }
測(cè)試,首先運(yùn)行MyServer類,然后運(yùn)行兩個(gè)MyClient類,然后分別在每個(gè)MyClient的提示符下輸入字符串,就可以看到Server可以分別接收處理每個(gè)Client的請(qǐng)求了。
網(wǎng)頁(yè)題目:JavaSocket實(shí)戰(zhàn)之二:多線程通信
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