Java 网络编程Tcp

Java 利用网络编程有两种方式：一种是Tcp,另一种是Udp

下面我用Tcp编程举例：

/*
	编程实现：
		1.使用TCP协议发送数据，TCP协议接收数据
		2.使用TCP协议发送数据(键盘录入)，TCP协议接收数据，并将其显示在控制台
		3.使用TCP协议发送数据(文本文件)，TCP协议接收数据，并将其显示在控制台
		4.使用TCP协议发送数据(键盘录入)，TCP协议接收数据，并将数据写入文本文件
		5.使用TCP协议发送数据(文本文件)，TCP协议接收数据，并将数据写入文本文件
*/

import java.net.Socket;
import java.io.OutputStream;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
import java.io.FileReader;
import java.io.InputStream;


class TcpSendDemo{
	public static void main(String[] args) throws IOException{
		//method1();
		//method2();
		//method3();
		//method4();
		method5();
	}
	
	//1.使用TCP协议发送数据，TCP协议接收数据
	public static void method1() throws IOException{
		Socket s = new Socket("202.193.52.73",8888);
		
		OutputStream os = s.getOutputStream();
		
		os.write("hello,Tcp,我来了".getBytes());
		
		InputStream is = s.getInputStream();
		
		byte[] bys = new byte[1024];
		int len = is.read(bys);
		
		System.out.println(new String(bys,0,len));
		
		//os.close();
		s.close();
	}
	
	//2.使用TCP协议发送数据(键盘录入)，TCP协议接收数据，并将其显示在控制台
	public static void method2() throws IOException{
	
		Socket s = new Socket("202.193.52.73",8888);
				
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
		
		String line = null;
		
		
		while((line = br.readLine()) != null){	
			if(line.equals("886")){
				break;
			}
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		
		br.close();
		
		//BufferedReader br1 = new BufferedReader(new InputStreamReader(s.getInputStream()));
		//String line1 = null;
		//String line1 = br1.readLine();
	
		//while((line1 = br1.readLine()) != null){
		
			//System.out.println(line1);		
		//}
		
		
		s.close();
	}
	
	//3.使用TCP协议发送数据(文本文件)，TCP协议接收数据，并将其显示在控制台
	public static void method3() throws IOException{
	
		Socket s = new Socket("202.193.52.73",8888);
		
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
		BufferedReader br = new BufferedReader(new FileReader("E:\\PS.txt"));
		String line = null;
	
		while((line = br.readLine()) != null){
		
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		s.shutdownOutput();
		
		BufferedReader br1 = new BufferedReader(new InputStreamReader(s.getInputStream()));
		System.out.println(br1.readLine());
		br.close();
		bw.close();
	}
	
	//4.使用TCP协议发送数据(键盘录入)，TCP协议接收数据，并将数据写入文本文件
	public static void method4() throws IOException{
	
		Socket s = new Socket("202.193.52.73",8888);
				
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
		
		String line = null;
		
		
		while((line = br.readLine()) != null){	
			if(line.equals("886")){
				break;
			}
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		s.shutdownOutput();
		
		BufferedReader br1 = new BufferedReader(new InputStreamReader(s.getInputStream()));
		System.out.println(br1.readLine());
		
		bw.close();
		s.close();
	}
	
	//5.使用TCP协议发送数据(文本文件)，TCP协议接收数据，并将数据写入文本文件
	public static void method5() throws IOException{
	
		Socket s = new Socket("202.193.52.73",8888);
		
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
		BufferedReader br = new BufferedReader(new FileReader("E:\\PS.txt"));
		String line = null;
	
		while((line = br.readLine()) != null){
		
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		s.shutdownOutput();
		
		BufferedReader br1 = new BufferedReader(new InputStreamReader(s.getInputStream()));
		System.out.println(br1.readLine());
			//bw.write("over");
			//bw.newLine();
			//bw.flush();
		
		br.close();
		bw.close();
	}
}