simplewebclient.java

java经典10例子

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

//一个简单的从服务器取回一个HTML页面的程序  
public class SimpleWebClient{ 
	public static void main(String args[]) { 
		try{//打开一个客户端socket连接 
			Socket clientSocket=new Socket("127.0.0.1",8080); 
			System.out.println("Client: " + clientSocket); 
			//取得一个网页 
			getPage(clientSocket); 
		} catch(UnknownHostException uhe) { 
			System.out.println("UnknownHostException:"+uhe); 
		} catch (IOException ioe) { 
			System.err.println("IOException: " + ioe); 
		} 
	} 
	/** 
	*通过建立的连接请求一个页面,显示回应然后关闭socket 
	*/ 
	public static void getPage(Socket clientSocket) { 
		try { //需要输入和输出流 
			DataOutputStream outbound=new DataOutputStream( 
			clientSocket.getOutputStream()); 
			DataInputStream inbound =new DataInputStream( 
			clientSocket.getInputStream() ); 
			//向服务器发出HTTP请求 
			outbound.writeBytes("GET /HTTP/1.0\r\n\r\n"); 
			//读出回应 
			String responseLine; 
			while((responseLine=inbound.readLine())!=null) { 
				//把每一行显示出来 
				System.out.println(responseLine);
				if(responseLine.indexOf("")!=-1) 
					break; 
			} 
			//清除
			outbound.close(); 
			inbound.close(); 
			clientSocket.close(); 
		} catch(IOException ioe) { 
			System.out.println("IOException:"+ioe); 
		} 
	} 
}