Java学习之网络编程

TCP客户端程序：

package dailyadviceclient;

import java.io.*;
import java.net.*;

public class DailyAdviceClient {

public void go(){
try {
Socket s = new Socket("127.0.0.1",5555);//建立一个新的Socket网络连接：第一个参数是IP地址，第二个是端口

InputStreamReader streamReader = new InputStreamReader(s.getInputStream());//创建Socket数据输入流
BufferedReader reader = new BufferedReader(streamReader);//从数据流中读取信息

String advice = reader.readLine();

System.out.println("Today you should:"+advice);
reader.close();
} catch (Exception e) {
e.printStackTrace();
}

}
public static void main(String[] args) {
DailyAdviceClient client = new DailyAdviceClient();

client.go();

}

}

TCP服务端程序

package dailyadviceserver;

import java.io.*;
import java.net.*;

public class DailyAdviceServer {

String[] adviceList = {"Take smaller bites","Go for the tight jeans.No they do NOT make "
+ "you look fat"};//服务端要发送的信息列表
public void go()
{
try {
ServerSocket serverSocket = new ServerSocket(5555);//设置一个新的端口，尽量不要讲端口设置为0~1024，因为他们已经被已知的服务占用
while (true) {
Socket socket = serverSocket.accept();//创建件一个新的端口监听
PrintWriter writer = new PrintWriter(socket.getOutputStream());
String advice = getAdvice();
writer.println(advice);//向数据流中写信息
writer.close();
System.out.println(advice);
}
} catch (Exception e) {
}

}
private String getAdvice()
{
int random = (int)(Math.random() * adviceList.length);
return adviceList[random];
}
public static void main(String[] args) {
DailyAdviceServer server = new DailyAdviceServer();
server.go();
}
}