simeplewebserver.java

java实现ftp功能。其中含有一个监听端口并提供HTML文档的程序.内容

//一个监听端口并提供HTML文档的程序. 
import java.io.*;
import java.net.*;
 
class SimpleWebServer {
	public static void main(String args[]) { 
		ServerSocket serverSocket = null; 
		Socket clientSocket = null; 
		int connects = 0; 
		try { 
			// 建立一个服务器套接字 
			serverSocket = new ServerSocket(8089, 5); 
			while (connects < 5) { 
				// 等待连接 
				clientSocket = serverSocket.accept(); 
				//服务连接 
				ServiceClient(clientSocket); 
				connects++; 
			} 
			serverSocket.close(); 
		}catch (IOException ioe) { 
			System.out.println("Error in SimpleWebServer: " + ioe); 
		} 
	} 
	public static void ServiceClient(Socket client) throws IOException { 
		DataInputStream inbound = null; 
		DataOutputStream outbound = null; 
		try { 
			// 得到IO流 
			inbound = new DataInputStream( client.getInputStream()); 
			outbound = new DataOutputStream( client.getOutputStream()); 
			//格式化输出(回应头和很少的HTML文档) 
			StringBuffer buffer = new StringBuffer(); 
			buffer.append("Server Documents");
			String inputLine; 
			while ((inputLine = inbound.readLine()) != null){ 
				//如果到了HTTP请求的尾部,就发送回应 
				if ( inputLine.equals("") ) { 
					outbound.writeBytes(buffer.toString()); 
					break; 
				} 
			} 
		}catch (IOException ioe) { 
			System.out.println("Error in SimpleWebServer: " + ioe); 
		}finally { 
			//关闭输入输出流和套接字 
			System.out.println("Cleaning up connection: " + client); 
			outbound.close(); 
			inbound.close(); 
			client.close(); 
			client.close(); 
		} 
	} 
}