北信科高級java網(wǎng)絡(luò)編程(共14頁)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上實 驗 報 告課程名稱 高級java程序設(shè)計 實驗項目 Java 網(wǎng)絡(luò)編程 實驗儀器 系 別 計算機(jī)學(xué)院 專 業(yè) 軟件工程 班級/學(xué)號 實驗日期 成 績 指導(dǎo)教師 【實驗名稱】Java 網(wǎng)絡(luò)編程【實驗?zāi)繕?biāo)】1、學(xué)習(xí)和理解客戶端-服務(wù)器模型，掌握網(wǎng)絡(luò)計算模型的Java實現(xiàn)方案。2、學(xué)習(xí)和掌握實現(xiàn)基本客戶端-服務(wù)器模型的Java 程序開發(fā)方法，能夠?qū)崿F(xiàn)客戶端程序，能夠分別實現(xiàn)服務(wù)單客戶和多客戶同時訪問的服務(wù)器端程序，能夠傳送基本數(shù)據(jù)，也能夠傳送對象數(shù)據(jù)。3、學(xué)習(xí)和了解Java 實現(xiàn)方案的不同變化?！緦嶒炄掌诤蜁r間記錄】 12.3-12.4【實驗預(yù)習(xí)】 復(fù)習(xí)了高級java的

2、第三十章網(wǎng)絡(luò)章節(jié)【實驗過程及結(jié)果記錄】 1、（單客戶貸款服務(wù)器）為一個客戶端編寫一個服務(wù)器?？蛻舳讼蚍?wù)器發(fā)送貸款信息（年利率、貸款年限和貸款總額）。服務(wù)器計算月償還額和總償還額，并把它們發(fā)回給客戶端。實驗結(jié)果2、（多客戶貸款服務(wù)器）在練習(xí)1 的基礎(chǔ)上，實現(xiàn)一個能夠服務(wù)多客戶的貸款服務(wù)器端程序。 實驗結(jié)果：【實驗總結(jié)】 對服務(wù)器與客戶端的運(yùn)作有了進(jìn)一步掌握，同時對IP，TCP,UDP有了了解，同時自己已經(jīng)能實現(xiàn)在局域網(wǎng)內(nèi)不同電腦間的服務(wù)器與客戶端的連接?！舅伎碱}的思考】1、如何建立服務(wù)器和客戶端之間的連接？如何在服務(wù)器端和客戶端之間發(fā)送和接收基本數(shù)據(jù)類型、對象數(shù)據(jù)類型?？梢砸苑?wù)器發(fā)送、客戶端

3、接收為例說明。答：服務(wù)器創(chuàng)建一個服務(wù)器套接字,利用客戶端套接字連接客戶端.對套接字對象使用DataInputStream inputFromClient = new DataInputStream(socket.getInputStream();DataOutputStream outputToClient = new DataOutputStream(socket.getOutputStream()以及使用該對象的read（）和write()方法讀取和寫入數(shù)據(jù)。2、由單客戶的服務(wù)器端到多客戶的服務(wù)器端，如果使用多線程，那么，單客戶服務(wù)器的哪部分功能（代碼段、模塊），要封裝為任務(wù)類代碼，放在多

4、客戶服務(wù)器的線程任務(wù)類中運(yùn)行？答：通過將服務(wù)員器中通過套接字進(jìn)行數(shù)據(jù)傳輸?shù)哪K封裝為任務(wù)類代碼，放在多客戶服務(wù)器的線程任務(wù)類3、如何運(yùn)行客戶-服務(wù)器程序？如何建立多客戶同時運(yùn)行的運(yùn)行環(huán)境，保證服務(wù)器端程序能夠同時面對多個客戶？答：先運(yùn)行服務(wù)器，在運(yùn)行客戶端。多客戶時，:當(dāng)建立一個與客戶端連接后,服務(wù)器就創(chuàng)建一個新線程來處理通信,然后,在無限的while循環(huán)中等待另一次連接. 4、針對練習(xí)2 的多客戶-服務(wù)器程序，描述一下你的開發(fā)步驟答：客戶端不變時，改動服務(wù)器程序，將原服務(wù)器程序中的數(shù)據(jù)傳輸模塊封裝成任務(wù)類，通過實現(xiàn)多線程的方法來實現(xiàn)多客戶。【附：程序代碼】 習(xí)題1的客戶端代碼：package

5、 gaozha;import java.awt.BorderLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import .Socket;import javax.swing.AbstractButton;import javax.swing.JButton

6、;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextArea;import javax.swing.JTextField;public class Client extends JFrame JTextField Rate = new JTextField(20);JTextField Years = new JTextField(20);JTextField Amount = new JTextField(20);JTextArea jta

7、 = new JTextArea(10, 40);private DataOutputStream toServer;private DataInputStream fromServer;Client() JPanel p1 = new JPanel();p1.setLayout(new GridLayout(3, 1);p1.add(new JLabel("Annual Interest Rate");p1.add(new JLabel("Number Of Years ");p1.add(new JLabel("Loan Amount &q

8、uot;);JPanel p2 = new JPanel();p2.setLayout(new GridLayout(3, 1);p2.add(Rate);p2.add(Years);p2.add(Amount);JButton Sumbit = new JButton("Sumbit");BorderLayout layout = new BorderLayout();add(p1, layout.WEST);add(p2, layout.CENTER);add(Sumbit, layout.EAST);add(jta, layout.SOUTH);setTitle(&q

9、uot;RateClient");setSize(500, 600);setLocationRelativeTo(null);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);pack();try Socket socket = new Socket("localhost", 8001);fromServer = new DataInputStream(socket.getInputStream();toServer = new DataOutputStream(socket.getOu

10、tputStream(); catch (IOException ex) jta.append(ex.toString() + 'n');Sumbit.addActionListener(new JButtonListener();public class JButtonListener implements ActionListener public void actionPerformed(ActionEvent e) try double rate = Double.parseDouble(Rate.getText().trim();double years = Doub

11、le.parseDouble(Years.getText().trim();double amount = Double.parseDouble(Amount.getText().trim();toServer.writeDouble(rate);toServer.writeDouble(years);toServer.writeDouble(amount);double monthPayment = fromServer.readDouble();double AllPayment = fromServer.readDouble();jta.setText("");jta

12、.append("Annual Interest Rate:" + rate + 'n');jta.append("Number Of Years :" + years + 'n');jta.append("Loan Amount " + amount + 'n');jta.append("montPayment:" + monthPayment + 'n');jta.append("AllPayment:" + AllPaymen

13、t + 'n'); catch (IOException ex) System.out.println(ex);public static void main(String args) / TODO Auto-generated method stubnew Client();習(xí)題1的服務(wù)器端代碼package gaozha;import java.awt.BorderLayout;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import .S

14、erverSocket;import .Socket;import java.util.Date;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextArea;public class Server extends JFrame JTextArea jta = new JTextArea();Server() setLayout(new BorderLayout();add(new JScrollPane(jta), BorderLayout.CENTER);setTitle(&quo

15、t;RateSever");setSize(500, 400);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);try ServerSocket serverSocket = new ServerSocket(8001);jta.append("RateServer started at " + new Date() + 'n');Socket socket = serverSocket.accept();HandleRateClient task = new Hand

16、leRateClient(socket);new Thread(task).start(); catch (IOException ex) System.err.println(ex);class HandleRateClient implements Runnable private Socket socket;public HandleRateClient(Socket socket) this.socket = socket;public void run() try DataInputStream inputFromClient = new DataInputStream(socket

17、.getInputStream();DataOutputStream outputToClient = new DataOutputStream(socket.getOutputStream();double rate = inputFromClient.readDouble();double years = inputFromClient.readDouble();double amount = inputFromClient.readDouble();double monthrate = rate / (12 * years);double montPayment;double AllPa

18、yment;montPayment = (amount * monthrate * Math.pow(1 + monthrate,12 * years)/ (Math.pow(1 + monthrate, 12 * years) - 1);AllPayment = montPayment * 12;outputToClient.writeDouble(montPayment);outputToClient.writeDouble(AllPayment); catch (IOException xe) System.err.println(xe);public static void main(

19、String args) / TODO Auto-generated method stubnew Server();習(xí)題2客戶端代碼package gaozha;import java.awt.BorderLayout;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;i

20、mport .Socket;import javax.swing.AbstractButton;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JTextArea;import javax.swing.JTextField;public class Client extends JFrame JTextField Rate = new JTextField(20);JTextField Years

21、 = new JTextField(20);JTextField Amount = new JTextField(20);JTextArea jta = new JTextArea(10, 40);private DataOutputStream toServer;private DataInputStream fromServer;Client() JPanel p1 = new JPanel();p1.setLayout(new GridLayout(3, 1);p1.add(new JLabel("Annual Interest Rate");p1.add(new J

22、Label("Number Of Years ");p1.add(new JLabel("Loan Amount ");JPanel p2 = new JPanel();p2.setLayout(new GridLayout(3, 1);p2.add(Rate);p2.add(Years);p2.add(Amount);JButton Sumbit = new JButton("Sumbit");BorderLayout layout = new BorderLayout();add(p1, layout.WEST);add(p2,

23、layout.CENTER);add(Sumbit, layout.EAST);add(jta, layout.SOUTH);setTitle("RateClient");setSize(500, 600);setLocationRelativeTo(null);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);pack();try Socket socket = new Socket("localhost", 8001);fromServer = new DataInputS

24、tream(socket.getInputStream();toServer = new DataOutputStream(socket.getOutputStream(); catch (IOException ex) jta.append(ex.toString() + 'n');Sumbit.addActionListener(new JButtonListener();public class JButtonListener implements ActionListener public void actionPerformed(ActionEvent e) try

25、double rate = Double.parseDouble(Rate.getText().trim();double years = Double.parseDouble(Years.getText().trim();double amount = Double.parseDouble(Amount.getText().trim();toServer.writeDouble(rate);toServer.writeDouble(years);toServer.writeDouble(amount);double monthPayment = fromServer.readDouble()

26、;double AllPayment = fromServer.readDouble();jta.setText("");jta.append("Annual Interest Rate:" + rate + 'n');jta.append("Number Of Years :" + years + 'n');jta.append("Loan Amount " + amount + 'n');jta.append("montPayment:" +

27、monthPayment + 'n');jta.append("AllPayment:" + AllPayment + 'n'); catch (IOException ex) System.out.println(ex);public static void main(String args) / TODO Auto-generated method stubnew Client();習(xí)題2服務(wù)器端代碼package gaozha;import java.awt.BorderLayout;import java.io.DataInputSt

28、ream;import java.io.DataOutputStream;import java.io.IOException;import .ServerSocket;import .Socket;import java.util.Date;import javax.swing.JFrame;import javax.swing.JScrollPane;import javax.swing.JTextArea;public class Server extends JFrame JTextArea jta = new JTextArea();Server() setLayout(new Bo

29、rderLayout();add(new JScrollPane(jta), BorderLayout.CENTER);setTitle("RateSever");setSize(500, 400);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true);try ServerSocket serverSocket = new ServerSocket(8001);jta.append("RateServer started at " + new Date() + 'n');while (true) Socket socket = serverSocket.accept();HandleRateClient task = new HandleRa