Java/网络编程
< Java
基于TCP的客户端 源代码
package org.wikibooks.java.socket;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
public class TalkClient {
public static void main(String[] args) {
try {
Socket socket = new Socket("localhost", 4700);
//向服务器的4700端口发出客户TCP请求
BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));
//由系统标准输入设备构造BufferedReader对象
PrintWriter os = new PrintWriter(socket.getOutputStream());
//由Socket对象得到输出流,并构造PrintWriter对象
BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
//由Socket对象得到输入流,并构造相应的BufferedReader对象
String readline = sin.readLine();
//从系统标准输入读入一字符串
while (!readline.equalsIgnoreCase("bye")) {
//若从标准输入读入的字符串为 "bye"则停止循环
os.println(readline);
//将从系统标准输入读入的字符串输出Server
os.flush();
//刷新输出流,使Server马上收到该字符串
System.out.println("Client:" + readline);
//在系统标准输出上打印读入的字符串
System.out.println("Server:" + is.readLine());
//从Server读入一字符串,并打印到标准输出上
readline = sin.readLine();
//从系统标准输入读入一字符串
}
//继续循环
os.close();
//关闭Socket输出流
is.close();
//关闭Socket输入流
socket.close();
//关闭Socket
} catch(Exception e) {
e.printStackTrace();
//程序运行出错,向控制台输出错误信息
}
}
}
基于TCP服务端 源代码
package org.wikibooks.java.socket;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
public class TalkServer {
public static void main(String[] args) {
try {
ServerSocket server = new ServerSocket(4700);
//创建一个ServerSocket在端口4700监听客户TCP请求
Socket socket = server.accept();
//使用accept()阻塞等待客户请求,有客户请求到来则产生一个Socket对象,并继续执行
String line;
BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
//由Socket对象得到输入流,并构造相应的BufferedReader对象
PrintWriter os = new PrintWriter(socket.getOutputStream());
//由Socket对象得到输出流,并构造PrintWriter对象
BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));
//由系统标准输入设备构造BufferedReader对象
System.out.println("Client:" + is.readLine());
//在标准输出上打印从客户端读入的字符串
line = sin.readLine();
//从标准输入读入一字符串
while (!line.equalsIgnoreCase("bye")) {
//如果该字符串为 "bye",则停止循环
os.println(line);
//向客户端输出该字符串
os.flush();
//刷新输出流,使Client马上收到该字符串
System.out.println("Server:" + line);
//在系统标准输出上打印读入的字符串
System.out.println("Client:" + is.readLine());
//从Client读入一字符串,并打印到标准输出上
line = sin.readLine();
//从系统标准输入读入一字符串
}
//继续循环
os.close();
//关闭Socket输出流
is.close();
//关闭Socket输入流
socket.close();
//关闭Socket
server.close();
//关闭ServerSocket
} catch(Exception e) {
e.printStackTrace();
//程序运行出错,向控制台输出错误信息
}
}
}