TCP Socket通讯模型
TCP Socket通讯模型
应用举例：
TestServer.java
TestCilent.java
TestServer.java
/* 范例名称：简单的client/server程序
* 源文件名称：TestClient.java/TestServer.java
* 要 点：
* 1. Java Socket编程步骤
* 2. Socket/ServerSocket类用法
* 3. 通过Socket对象可以获取通信对方Socket的信息
*/
import java.net.*;
import java.io.*;
public class TestServer {
public static void main(String args[]) {
try {
ServerSocket s = new ServerSocket(8888);
while (true) {
Socket s1 = s.accept();
OutputStream os = s1.getOutputStream();
DataOutputStream dos = new DataOutputStream(os);
//拿到客户端的地址和端口
dos.writeUTF("Hello," + s1.getInetAddress() +
"port#" +s1.getPort() + " bye-bye!");
dos.close();
s1.close();
}
}catch (IOException e) {
e.printStackTrace();
System.out.println("程序运行出错:" + e);
}
}
}
F:\>cd java F:\java>cd socket F:\java\socket>javac TestServer.java F:\java\socket>java TestServer
TestClient.java
/* 范例名称：简单的client/server程序
* 源文件名称：TestClient.java/TestServer.java
* 要 点：
* 1. Java Socket编程步骤
* 2. Socket/ServerSocket类用法
* 3. 通过Socket对象可以获取通信对方Socket的信息
*/
import java.net.*;
import java.io.*;
public class TestClient {
public static void main(String args[]) {
try {
Socket s1 = new Socket("127.0.0.1", 8888);
InputStream is = s1.getInputStream();
DataInputStream dis = new DataInputStream(is);
System.out.println(dis.readUTF());
dis.close();
s1.close();
} catch (ConnectException connExc) {
connExc.printStackTrace();
System.err.println("服务器连接失败！");
} catch (IOException e) {
e.printStackTrace();
}
}
}
F:\>cd java F:\java>cd socket F:\java\socket>javac TestClient.java F:\java\socket>java TestClient Hello,/127.0.0.1port#50883 bye-bye! F:\java\socket>java TestClient Hello,/127.0.0.1port#50890 bye-bye! F:\java\socket>java TestClient Hello,/127.0.0.1port#50892 bye-bye! F:\java\socket>java TestClient Hello,/127.0.0.1port#50893 bye-bye! F:\java\socket>
测试
TestSockServer.java
TestSockClient.java
TestSockServer.java
import java.io.*;
import java.net.*;
public class TestSockServer {
public static void main(String[] args) {
InputStream in = null;
OutputStream out = null;
try {
ServerSocket ss = new ServerSocket(5888);
while(true) {
Socket socket = ss.accept();
in = socket.getInputStream();
out = socket.getOutputStream();
DataOutputStream dos = new DataOutputStream(out);
DataInputStream dis = new DataInputStream(in);
String s = null;
if((s=dis.readUTF())!=null) {
System.out.println(s);
//打印client的地址和端口
System.out.println("from: "+socket.getInetAddress());
System.out.println("Port: "+socket.getPort());
}
dos.writeUTF("hi，hello");
dis.close();
dos.close();
socket.close();
}
} catch (IOException e) {e.printStackTrace();}
}
}
TestSockClient.java
import java.net.*;
import java.io.*;
public class TestSockClient {
public static void main(String[] args) {
InputStream is = null; OutputStream os = null;
try {
Socket socket = new Socket("localhost",5888);
is = socket.getInputStream();
os = socket.getOutputStream();
DataInputStream dis = new DataInputStream(is);
DataOutputStream dos = new DataOutputStream(os);
//写
dos.writeUTF("hey");
String s = null;
if((s=dis.readUTF())!=null);
System.out.println(s);
dos.close();
dis.close();
socket.close();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {e.printStackTrace();}
}
}
F:\java\socket>javac TestSockServer.java F:\java\socket>java TestSockServer hey from: /127.0.0.1 Port: 51812 hey from: /127.0.0.1 Port: 51814 hey from: /127.0.0.1 Port: 51815 hey from: /127.0.0.1 Port: 51817
F:\java\socket>javac TestSockClient.java F:\java\socket>java TestSockClient hi，hello F:\java\socket>java TestSockClient hi，hello F:\java\socket>java TestSockClient hi，hello F:\java\socket>java TestSockClient hi，hello F:\java\socket>