httpservice.java

HttpServer HTTP服务器 欢迎大家下载使用

package com.softeem.HttpServer.session;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;

public class HttpService implements Runnable {
	// 资源的具体路径
	private static final String COMMAND = "GET";

	private static final int MAX_LENGTH = 1024;

	private static final String PARTION = " ";

	private Socket socket;

	// 使用通过构造器传过来的socket类(这个类一定对应的有一个客户存在)
	public HttpService(Socket socket) {
		this.socket = socket;
	}

	// http://192.168.23.61:80/index.html
	// GET /index.html HTTP/1.1
	// Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg,
	// application/x-shockwave-flash, application/vnd.ms-excel,
	// application/vnd.ms-powerpoint, application/msword, */*
	// Accept-Language: zh-cn
	// Accept-Encoding: gzip, deflate
	// User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET
	// CLR 2.0.50727)
	// Host: 192.168.23.61
	// Connection: Keep-Alive
	public void run() {
		try {
			// 从主线程传递过来的Socket(相当于客户端）读取客户要请求的资源转变为字符流
			BufferedReader br = new BufferedReader(new InputStreamReader(socket
					.getInputStream()));
			String line = null;
			while ((line = br.readLine()) != null) { // 读取字符流中包含的客户端的请求的资源
				System.out.println(line);
				if (line.length() < 3) // 判断读取的资源不要小于HTTP中GET指令的长度
					break;
				doGet(line);// 用line来获得请求的资源
			}
			br.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public void doGet(String line) {
		String[] strs = line.split(PARTION);// 对HTTP传过来的指令进行分割
		String command = strs[0];// HTTP协议发送的具体指令
		String fileName = null;
		if (command.equalsIgnoreCase(COMMAND)) {// 判断是否为GET指令
			if (strs[1].length() <= 1) // 如果没有请求的资源获得默认的页面
				// 动态获取客户端的访问的指定的资源
				fileName = SystemConfig.getSystemConfig().getDefaultFile();
			else
				fileName = strs[1].substring(1);// 截取HTTP协议传过来的指令的资源名称
			// F:\\JAVA23\\files\\index.html
			File file = new File(SystemConfig.getSystemConfig()
					.getResourcePath()
					+ fileName);// 获得本地资源库中具体资源的路径名
			try {
				InputStream in = new FileInputStream(file);// 文件输入流
				byte[] buff = new byte[MAX_LENGTH];
				// 获得网络流的本地文件流 网络输出流
				OutputStream out = socket.getOutputStream();
				int length = 0;
				// 实现边读边写的功能 并把文件流转换了网络流
				while ((length = in.read(buff)) != -1) {
					// 把从本地得到的资源传给客户端
					out.write(buff, 0, length);
				}
				out.close();
				in.close();
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}

	}

}