網(wǎng)絡(luò)編程實(shí)現(xiàn)客戶端與服務(wù)端的交互

1、在Socket的程序開(kāi)發(fā)中，服務(wù)器端使用ServerSocket等待客戶端的鏈接，對(duì)于Java的網(wǎng)路程序來(lái)講，每一個(gè)客戶端使用一個(gè)Socket對(duì)象表示。ServerSocketServerSocket類主要用在服務(wù)器端程序的開(kāi)發(fā)上，用于接收客戶端的鏈接請(qǐng)求。方法類型描述1Public ServerSocket(int port) throws IOException構(gòu)造創(chuàng)建ServerSocket實(shí)例，并指定監(jiān)聽(tīng)端口2Public Socket accept() throws IOException普通等待客戶端連接，此方法連接之前一直阻塞3Public InetAddress getInet

2、Address()普通返回服務(wù)器的IP地址4Public boolean isClosed()普通返回ServerSocket的關(guān)閉狀態(tài)5Public void close() throws IOException普通關(guān)閉ServerSocketSocket在服務(wù)器端每次運(yùn)行時(shí)都要使用accept()方法等待客戶端連接，此方法執(zhí)行之后服務(wù)器端講進(jìn)入阻塞狀態(tài)，直到客戶端連接之后程序才可以向下繼續(xù)執(zhí)行，此方法的返回值是Socket，每一個(gè)Socket都表示一個(gè)客戶端對(duì)象。方法類型描述1Public Socket(String host,int port) throws UnKnownHostExc

3、etion,IOException構(gòu)造構(gòu)造Socket對(duì)象，同時(shí)指定要連接服務(wù)器的主機(jī)名稱及連接端口。2Public InputStream getInputStream() throws IOException普通返回此套接字的輸入流3Public OutputStream getOutputStream() throws IOException普通返回此套接字的輸出流4Public void close() throws IOException普通關(guān)閉此Socket5Public Boolean isClosed()普通判斷此套接字是否被關(guān)閉多線程:Java的多線程實(shí)現(xiàn)：有兩種方式：1.

4、繼承Thread類2. 實(shí)現(xiàn)Runnable接口繼承Thread類一個(gè)類只要繼承了Thread類，此類就稱為多線程操作類，在Thread子類中，必須覆寫(xiě)run()方法，此方法為線程的主體。BufferedReader是從緩沖區(qū)之中讀取內(nèi)容，所有的輸入的字節(jié)數(shù)據(jù)都將放在緩沖區(qū)之中。BufferedReader實(shí)例化BufferedReader buf=new BufferedReader(new InputStreamReader(System.in);InputStreamReader是R eader的子類，將輸入的字節(jié)流轉(zhuǎn)化為字符流。對(duì)象輸出流：ObjectOutputStream方法或常量

5、類型描述1Public ObjectOutputStream(OutputStream out) throws IOException構(gòu)造傳入輸出的對(duì)象2Public final void writeObject(Object obj) throws IOException普通輸出對(duì)象對(duì)象輸入流：ObjectInputStream方法或常量類型描述1Public ObjectInputStream (InputStream in) throws IOException構(gòu)造構(gòu)造輸入對(duì)象2Public final Object readObject() throws IOException, Cl

6、assNotFoundException普通從指定位置讀取對(duì)象以下代碼實(shí)現(xiàn)了服務(wù)端與客戶端的交互：里面包含了網(wǎng)絡(luò)編程、線程、流等知識(shí)點(diǎn)源代碼：Server.java中的代碼import java.io.*;import .*;public class Server ServerSocket server; / 聲明ServerSocketpublic Server() try server = new ServerSocket(5566); / 構(gòu)建服務(wù)，綁定端口 catch (IOException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace();publ

7、ic void startServer() /定義startServer方法，由此啟動(dòng)服務(wù)ServerThread st = new ServerThread(); /new出一個(gè)新線程st.start(); /啟動(dòng)線程public static void main(String args) Server s1 = new Server(); /用Server類創(chuàng)建一個(gè)S1對(duì)象，此為對(duì)象實(shí)例化s1.startServer();/調(diào)用startServer()方法class ServerThread extends Thread /繼承Thread類public void run() while

8、 (true) try System.out.println(開(kāi)始監(jiān)聽(tīng):);Socket formClient = server.accept();ObjectOutputStream oos = new ObjectOutputStream(formClient.getOutputStream();BufferedReader buf = new BufferedReader(new InputStreamReader(System.in);System.out.println(請(qǐng)輸入：);String s = buf.readLine();oos.writeObject(s);Object

9、InputStream ois = new ObjectInputStream(formClient.getInputStream();String sc = (String) ois.readObject();System.out.println(客戶端說(shuō)： + sc);Thread.sleep(100); catch (IOException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace(); catch (ClassNotFoundException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace(); catch (In

10、terruptedException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace();Client.java中的代碼：import java.io.*;import .*;public class Client public static void main(String args) while (true) try Socket toServer = new Socket(InetAddress.getLocalHost(), 5566);BufferedReader buf = new BufferedReader(new InputStreamRead

11、er(System.in);ObjectInputStream ois = new ObjectInputStream(toServer.getInputStream();String s = (String) ois.readObject();System.out.println(服務(wù)器端說(shuō)： + s);ObjectOutputStream oos = new ObjectOutputStream(toServer.getOutputStream();System.out.println(請(qǐng)輸入：);String sc = buf.readLine();oos.writeObject(sc); catch (UnknownHostException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace(); catch (IOException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace(); catch (ClassNotFoundException e) / TODO 自動(dòng)生成 catch 塊e.printStackTrace();運(yùn)行說(shuō)明把Server.java和Client.java兩個(gè)文件放到同一個(gè)文件夾，比如放在F:網(wǎng)絡(luò)編程 文件夾下。運(yùn)行步驟：開(kāi)始-運(yùn)行-cmd-cd F:網(wǎng)絡(luò)編程-F:-j