javasocket编程(javasocket通信)
Java網(wǎng)絡(luò)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(wú)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(gè)連接和一人呼叫。所有的事情在到達(dá)時(shí)的順序與它們出發(fā)時(shí)的順序時(shí)一樣。
無(wú)連接的sockets操作就像是一個(gè)郵件投遞，沒(méi)有什么保證，多個(gè)郵件可能在到達(dá)時(shí)的順序與出發(fā)時(shí)的順序不一樣。
Javasocket入門(mén)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(jì)算機(jī)網(wǎng)絡(luò)通信的基本的技術(shù)之一。如今大多數(shù)基于網(wǎng)絡(luò)的軟件，如瀏覽器，即時(shí)通訊工具甚至是P2P下載都是基于Socket實(shí)現(xiàn)的。本文會(huì)介紹一下基于TCP/IP的Socket編程，并且如何寫(xiě)一個(gè)客戶端/服務(wù)器程序。
方法/步驟
Java中的socket編程 下面的部分將通過(guò)一些示例講解一下如何使用socket編寫(xiě)客戶端和服務(wù)器端的程序。 注意：在接下來(lái)的示例中，我將使用基于TCP/IP協(xié)議的socket編程，因?yàn)檫@個(gè)協(xié)議遠(yuǎn)遠(yuǎn)比UDP/IP使用的要廣泛。并且所有的socket相關(guān)的類(lèi)都位于java.net包下，所以在我們進(jìn)行socket編程時(shí)需要引入這個(gè)包。
寫(xiě)入數(shù)據(jù) 接下來(lái)就是寫(xiě)入請(qǐng)求數(shù)據(jù)，我們從客戶端的socket對(duì)象中得到OutputStream對(duì)象，然后寫(xiě)入數(shù)據(jù)后。很類(lèi)似文件IO的處理代碼。
打開(kāi)服務(wù)器端的socket
讀取數(shù)據(jù) 通過(guò)上面得到的socket對(duì)象獲取InputStream對(duì)象，然后安裝文件IO一樣讀取數(shù)據(jù)即可。這里我們將內(nèi)容打印出來(lái)。
使用socket實(shí)現(xiàn)一個(gè)回聲服務(wù)器，就是服務(wù)器會(huì)將客戶端發(fā)送過(guò)來(lái)的數(shù)據(jù)傳回給客戶端。B/S方向的學(xué)Socket干什么，沒(méi)有必要。
如果你需要自己做一個(gè)服務(wù)器，比如Tomcat,那么學(xué)習(xí)一下好了。
B/S Java方面，就去學(xué) J2EE相關(guān)技術(shù),JSP ,Servlet, EJB, Hibernate(iBatis),Struts/JSF,Web Services,XML，等等。
不要花精力到Socket上。socket是網(wǎng)絡(luò)通訊編程常用的，建議掌握。沒(méi)事了看看也好
再看看HTTP協(xié)議
自己做個(gè)簡(jiǎn)單的web服務(wù)器玩玩
對(duì)以后提高會(huì)有幫助相對(duì)于C++而言，JAVA在網(wǎng)絡(luò)方面的優(yōu)勢(shì)還是還行的，建議學(xué)下。
Java編程，利用Socket和ServerSocket編程。
哎。。。加分都沒(méi)有。。。
算了吧。。
服務(wù)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(zhuǎn)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(wù)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(shuō)：" + "\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(wù)器說(shuō)："+"\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(fā)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(wù)器說(shuō)：" + "\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(shuō)："+"\n" + str + "\n");
} catch (Exception ee) {
}你這個(gè)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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