JAVA学习第十二天
2015-08-02 15:25
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InetAddress
package com.lingzhuo.test; import java.net.InetAddress; import java.net.UnknownHostException; public class InetAddress_Test { public static void main(String[] args) { try { InetAddress address = InetAddress.getLocalHost();// 本机ip System.out.println(InetAddress.getLocalHost());// lingzhuo11-2/192.168.0.52 System.out.println("主机名称" + address.getHostName());// 主机名称lingzhuo11-2 System.out.println("ip地址" + address.getHostAddress());// ip地址192.168.0.52 } catch (UnknownHostException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
Socket Tcp/Ip客户端与服务器之间通信
MyServer//Socket package com.lingzhuo.test; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.net.ServerSocket; import java.net.Socket; import java.util.Scanner; public class MyServer { public static void main(String[] args) { try { ServerSocket server = new ServerSocket(8080);// 8080端口监听 System.out.println("服务器启动"); Socket socket = server.accept();// 侦听并接受连接 进入服务器 等待连接 卡 OutputStream os = socket.getOutputStream(); OutputStreamWriter osw = new OutputStreamWriter(os); BufferedWriter bw = new BufferedWriter(osw); InputStream is = socket.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); Scanner scanner = new Scanner(System.in); while (true) { String s = br.readLine();// 读一行 等待客户端来数据 卡 //BufferedReader.readLine()读取一个文本行。通过下列字符之一即可认为某行已终止:换行 ('\n')、回车 ('\r') 或回车后直接跟着换行。 System.out.println("客户端返回数据:" + s); String back = scanner.next();//卡 bw.write(back + "\n"); bw.flush(); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
MyClient
package com.lingzhuo.test; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.util.Scanner; public class MyClient { public static void main(String[] args) { System.out.println("客户端启动"); try { Socket socket = new Socket("192.168.0.52", 8080);// 主机ip // 端口//连接本机IP的8080端口 // 连接服务器 OutputStream os = socket.getOutputStream();// 客户端输出 OutputStreamWriter osw = new OutputStreamWriter(os); BufferedWriter bw = new BufferedWriter(osw); InputStream is = socket.getInputStream();// 客户端输入 InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); Scanner scanner = new Scanner(System.in);//不会卡 while (true) { String s = scanner.next();// 卡 Scanner.next();查找并返回来自此扫描器的下一个完整标记。 bw.write(s + "\n"); bw.flush(); String back = br.readLine(); System.out.println("服务器返回数据:" + back); } // PrintWriter pw=new // PrintWriter(socket.getOutputStream());//不能有OutputStreamWriter // pw.println("jmnmijmnmik"); // pw.write("nihao\n"); // pw.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }
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