Java服务器程序

运行程序后在IE输入http://localhost/1.html就行了

public class WebServer {
	private void webStart(int port){
		try {
			//新建一个服务器ServerSocket
			ServerSocket socketServer = new ServerSocket(port);
			while(true){
				//等待客户端的请求
				Socket socket = socketServer.accept();
				new Processor(socket).start();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public static void main(String[] args) {
		int port = 80;
		if(args.length == 1){
			port = Integer.parseInt(args[0]);
		}
		//启动服务器
		new WebServer().webStart(port);
	}
}

public class Processor extends Thread {
	private Socket sockets;
	private InputStream in;
	//为方便使用PrintStream
	private PrintStream out;	
	//限定访问的文件地址
	private final static String WEB_ROOT = "C:\\WebRoot\\";

	public Processor(Socket socket) {
		this.sockets = socket;
		try {
			//初始化in,out
			in = sockets.getInputStream();
			out = new PrintStream(sockets.getOutputStream());
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void run() {
		String filename = parse(in);
		sendFile(filename);
	}
	//读客户端传过来的信息,返回需要请求的文件名
	public String parse(InputStream in) {
		//建立一个BufferedReader读客户端传过来的信息
		BufferedReader br = new BufferedReader(new InputStreamReader(in));
		String filename = null;
		try {
			String httpMessage = br.readLine();
			String[] content = httpMessage.split(" ");
			if (content.length != 3) {
				sendErrorMessage(400, "客户端请求错误");
			}
			System.out.println("code:" + content[0] + ",name:" + content[1]
					+ ",http version" + content[2]);
			filename = content[1];
		} catch (IOException e) {
			e.printStackTrace();
		}
		return filename;
	}
	//错误处理
	public void sendErrorMessage(int errorCoder, String errorMessage) {

	}
	//读取本地文件
	public void sendFile(String filename) {
		File file = new File(Processor.WEB_ROOT + filename);
		if (!file.exists()) {
			this.sendErrorMessage(404, "文件名不存在错误");
		}
		try {
			//读取本地文件,并放到content里面,再用out写到客户端那边
			InputStream in = new FileInputStream(file);
			byte[] content = new byte[(int) file.length()];
			in.read(content);
			out.write(content);
			out.close();
			in.close();

		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}