javasocket编程(javasocket通信)
Java网络编程－JavaSocket编程是什么呢？
Socket传输模式
Sockets有两种主要的操作方式：面向连接的和无连接的。面向连接的sockets操作就像一部电话，他们必须建立一个连接和一人呼叫。所有的事情在到达时的顺序与它们出发时的顺序时一样。
无连接的sockets操作就像是一个邮件投递，没有什么保证，多个邮件可能在到达时的顺序与出发时的顺序不一样。
Javasocket入门编程是什么？
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编程是作什么的
Socket,又称为套接字，Socket是计算机网络通信的基本的技术之一。如今大多数基于网络的软件，如浏览器，即时通讯工具甚至是P2P下载都是基于Socket实现的。本文会介绍一下基于TCP/IP的Socket编程，并且如何写一个客户端/服务器程序。
方法/步骤
Java中的socket编程 下面的部分将通过一些示例讲解一下如何使用socket编写客户端和服务器端的程序。 注意：在接下来的示例中，我将使用基于TCP/IP协议的socket编程，因为这个协议远远比UDP/IP使用的要广泛。并且所有的socket相关的类都位于java.net包下，所以在我们进行socket编程时需要引入这个包。
写入数据 接下来就是写入请求数据，我们从客户端的socket对象中得到OutputStream对象，然后写入数据后。很类似文件IO的处理代码。
打开服务器端的socket
读取数据 通过上面得到的socket对象获取InputStream对象，然后安装文件IO一样读取数据即可。这里我们将内容打印出来。
使用socket实现一个回声服务器，就是服务器会将客户端发送过来的数据传回给客户端。B/S方向的学Socket干什么，没有必要。
如果你需要自己做一个服务器，比如Tomcat,那么学习一下好了。
B/S Java方面，就去学 J2EE相关技术,JSP ,Servlet, EJB, Hibernate(iBatis),Struts/JSF,Web Services,XML，等等。
不要花精力到Socket上。socket是网络通讯编程常用的，建议掌握。没事了看看也好
再看看HTTP协议
自己做个简单的web服务器玩玩
对以后提高会有帮助相对于C++而言，JAVA在网络方面的优势还是还行的，建议学下。
Java编程，利用Socket和ServerSocket编程。
哎。。。加分都没有。。。
算了吧。。
服务器端：
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(“转换”);
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(“服务器：”);
try {
server = new ServerSocket(10000);
client = server.accept();
in = client.getInputStream();
out = client.getOutputStream();
text1.append(“已连接”+”\n”);
} catch (IOException ioe) {
while (true) {
try {
byte[] buf = new byte[256];
in.read(buf);
str = new String(buf);
text1.append(“客户端说：” + “\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(“服务器说：”+”\n” + s + “\n”);
} catch (IOException ie) {
客户端：
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(“发送”);
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(“客户端”);
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(“已连接”+”\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(“服务器说：” + “\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(“客户端说：”+”\n” + str + “\n”);
} catch (Exception ee) {
}你这个不就是TCP的例子吗？我给你找找。
//: 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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