Response.java

package com.hjy.response;

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

import com.hjy.request.Request;

public class Response {
	private Socket client;
	private PrintStream ps;
	private String path = null;

	public Response() {
	}

	public Response(Socket client) {
		super();
		this.client = client;
		try {
			ps = new PrintStream(client.getOutputStream());
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public void forward() throws FileNotFoundException {
		// 响应(把服务器上有的资源用流传给客户端)
		InputStream fis = null;
		try {
			fis = this.getClass().getClassLoader().getResourceAsStream(path);
			ps.println("HTTP/1.1 200 OK");
			ps.println();
			byte[] buf = new byte[1024];
			int len = 0;
			while ((len = fis.read(buf)) != -1) {
				ps.write(buf, 0, len);
				ps.flush();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				if (fis != null) {
					fis.close();
				}
				if (ps != null) {
					ps.close();
				}
				if (client != null) {
					client.close();
				}
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

	public void forward(String url) {
		/*
		 * url处理分3种情况 1.为空：返回默认资源 2.不空存在，返回该资源 3.不空不存在，返回错误信息
		 */
		if (url.equals("/")) {
			path = "html/2.jpg";
		} else {
			path = "html" + url;
			InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(path);
			if (inputStream == null) {
				path = "html/error.html";
			}
		}
		try {
			forward();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}