Java網絡編程－JavaSocket編程是什么呢？

??Socket傳輸模式

Sockets有兩種主要的操作方式：面向連接的和無連接的。面向連接的sockets操作就像一部電話，他們必須建立一個連接和一人呼叫。所有的事情在到達時的順序與它們出發時的順序時一樣。

無連接的sockets操作就像是一個郵件投遞，沒有什么保證，多個郵件可能在到達時的順序與出發時的順序不一樣。

Javasocket入門編程是什么？

??java原文件： import java。net。*; import java。io。*; public class ServerApp { public static void main(String args[]) { try { boolean flag=true; Socket clientSocket=null; String inputLine; int c; ServerSocket sSocket=new ServerSocket(8018); System。

java中的socket編程是作什么的

Socket,又稱為套接字，Socket是計算機網絡通信的基本的技術之一。如今大多數基于網絡的軟件，如瀏覽器，即時通訊工具甚至是P2P下載都是基于Socket實現的。本文會介紹一下基于TCP/IP的Socket編程，并且如何寫一個客戶端/服務器程序。

方法/步驟

Java中的socket編程 下面的部分將通過一些示例講解一下如何使用socket編寫客戶端和服務器端的程序。 注意：在接下來的示例中，我將使用基于TCP/IP協議的socket編程，因為這個協議遠遠比UDP/IP使用的要廣泛。并且所有的socket相關的類都位于java.net包下，所以在我們進行socket編程時需要引入這個包。

寫入數據 接下來就是寫入請求數據，我們從客戶端的socket對象中得到OutputStream對象，然后寫入數據后。很類似文件IO的處理代碼。

打開服務器端的socket

讀取數據 通過上面得到的socket對象獲取InputStream對象，然后安裝文件IO一樣讀取數據即可。這里我們將內容打印出來。

使用socket實現一個回聲服務器，就是服務器會將客戶端發送過來的數據傳回給客戶端。B/S方向的學Socket干什么，沒有必要。

如果你需要自己做一個服務器，比如Tomcat,那么學習一下好了。

B/S Java方面，就去學 J2EE相關技術,JSP ,Servlet, EJB, Hibernate(iBatis),Struts/JSF,Web Services,XML，等等。

不要花精力到Socket上。socket是網絡通訊編程常用的，建議掌握。沒事了看看也好

再看看HTTP協議

自己做個簡單的web服務器玩玩

對以后提高會有幫助相對于C++而言，JAVA在網絡方面的優勢還是還行的，建議學下。

Java編程，利用Socket和ServerSocket編程。

哎。。。加分都沒有。。。

算了吧。。

服務器端：

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.ServerSocket;

import java.net.Socket;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTextArea;

class wangluo1 extends JFrame implements ActionListener {

JFrame frame = new JFrame();

JPanel panel1 = new JPanel();

JPanel panel2 = new JPanel();

JTextArea text1 = new JTextArea(30, 30);

//JTextArea text2 = new JTextArea(3, 25);

JButton sent = new JButton("轉換");

InputStream in;

OutputStream out;

Socket client;

ServerSocket server;

String str;

String newStr = "";

public wangluo1() {

add("South", panel2);

add(panel1);

panel1.add(text1);

panel2.setLayout(new FlowLayout());

//panel2.add(text2);

panel2.add(sent);

sent.addActionListener(this);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

//try {

//in.close();

//out.close();

//} catch (IOException e1) {

TODO Auto-generated catch block

//e1.printStackTrace();

//}

System.exit(0);

}

});

pack();

setVisible(true);

this.setTitle("服務器：");

try {

server = new ServerSocket(10000);

client = server.accept();

in = client.getInputStream();

out = client.getOutputStream();

text1.append("已連接"+"\n");

} catch (IOException ioe) {

while (true) {

try {

byte[] buf = new byte[256];

in.read(buf);

str = new String(buf);

text1.append("客戶端說：" + "\n" +str.trim());

text1.append("\n");

} catch (IOException e) {

}

public static void main(String[] args) {

new wangluo1();

public void actionPerformed(ActionEvent e) {

try {

for(int i=str.length()-1;i>=0;i--){

newStr = newStr + str.charAt(i);

}

byte[] buf = newStr.getBytes();

//text2.setText("");

out.write(buf);

out.flush();

//text1.append("服務器說："+"\n" + s + "\n");

} catch (IOException ie) {

客戶端：

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.net.Socket;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JTextArea;

public class wangluo2 extends JFrame implements ActionListener {

JFrame frame = new JFrame();

Socket client;

OutputStream os;

InputStream is;

String s;

JTextArea text3 = new JTextArea(30, 30);

JTextArea text4 = new JTextArea(3, 25);

JPanel panel1 = new JPanel();

JPanel panel2 = new JPanel();

JButton clientsent = new JButton("發送");

public wangluo2() {

add("South", panel2);

add(panel1);

panel1.add(text3);

panel2.setLayout(new FlowLayout());

panel2.add(text4);

panel2.add(clientsent);

pack();

setVisible(true);

this.setLocation(500, 0);

this.setTitle("客戶端");

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

//try {

//is.close();

//os.close();

//} catch (IOException e1) {

TODO Auto-generated catch block

//e1.printStackTrace();

//}

System.exit(0);

}

});

clientsent.addActionListener(this);

try {

client = new Socket("127.0.0.1", 10000);

text3.append("已連接"+"\n");

is = client.getInputStream();

os = client.getOutputStream();

} catch (IOException ioe) {

while (true) {

try {

byte[] buf = new byte[256];

is.read(buf);

String str = new String(buf);

text3.append("服務器說：" + "\n" + str.trim());

text3.append("\n");

} catch (IOException e) {

}

public static void main(String[] args) {

new wangluo2();

public void actionPerformed(ActionEvent e) {

try {

String str = text4.getText();

byte[] buf = str.getBytes();

text4.setText("");

os.write(buf);

os.flush();

text3.append("客戶端說："+"\n" + str + "\n");

} catch (Exception ee) {

}你這個不就是TCP的例子嗎？我給你找找。

//: c15:JabberServer.java

// Very simple server that just

// echoes whatever the client sends.

// {RunByHand}

import java.io.*;

import java.net.*;

public class JabberServer {

// Choose a port outside of the range 1-1024:

public static final int PORT = 8080;

public static void main(String[] args)

throws IOException {

ServerSocket s = new ServerSocket(PORT);

System.out.println("Started: " + s);

try {

// Blocks until a connection occurs:

Socket socket = s.accept();

try {

System.out.println(

"Connection accepted: "+ socket);

BufferedReader in =

new BufferedReader(

new InputStreamReader(

socket.getInputStream()));

// Output is automatically flushed

// by PrintWriter:

PrintWriter out =

new PrintWriter(

new BufferedWriter(

new OutputStreamWriter(

socket.getOutputStream())),true);

while (true) {

String str = in.readLine();

if (str.equals("END")) break;

System.out.println("Echoing: " + str);

out.println(str);

}

// Always close the two sockets...

} finally {

System.out.println("closing...");

socket.close();

}

} finally {

s.close();

}

}

} ///:~

//: c15:JabberClient.java

// Very simple client that just sends

// lines to the server and reads lines

// that the server sends.

// {RunByHand}

import java.net.*;

import java.io.*;

public class JabberClient {

public static void main(String[] args)

throws IOException {

// Passing null to getByName() produces the

// special "Local Loopback" IP address, for

// testing on one machine w/o a network:

InetAddress addr =

InetAddress.getByName(null);

// Alternatively, you can use

// the address or name:

// InetAddress addr =

//InetAddress.getByName("127.0.0.1");

// InetAddress addr =

//InetAddress.getByName("localhost");

System.out.println("addr = " + addr);

Socket socket =

new Socket(addr, JabberServer.PORT);

// Guard everything in a try-finally to make

// sure that the socket is closed:

try {

System.out.println("socket = " + socket);

BufferedReader in =

new BufferedReader(

new InputStreamReader(

socket.getInputStream()));

// Output is automatically flushed

// by PrintWriter:

PrintWriter out =

new PrintWriter(

new BufferedWriter(

new OutputStreamWriter(

socket.getOutputStream())),true);

for(int i = 0; i < 10; i ++) {

out.println("howdy " + i);

String str = in.readLine();

System.out.println(str);

}

out.println("END");

} finally {

System.out.println("closing...");

socket.close();

}

} ///:~

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